| 1 | ///////////////////////////////////////////////////////////////// |
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| 2 | // Main.cc |
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| 3 | // |
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| 4 | // Main routines for PROBCONS program. |
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| 5 | ///////////////////////////////////////////////////////////////// |
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| 6 | |
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| 7 | #include "SafeVector.h" |
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| 8 | #include "MultiSequence.h" |
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| 9 | #include "Defaults.h" |
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| 10 | #include "ScoreType.h" |
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| 11 | #include "ProbabilisticModel.h" |
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| 12 | #include "EvolutionaryTree.h" |
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| 13 | #include "SparseMatrix.h" |
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| 14 | #include <string> |
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| 15 | #include <sstream> |
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| 16 | #include <iomanip> |
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| 17 | #include <iostream> |
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| 18 | #include <list> |
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| 19 | #include <set> |
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| 20 | #include <algorithm> |
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| 21 | #include <climits> |
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| 22 | #include <cstdio> |
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| 23 | #include <cstdlib> |
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| 24 | #include <cerrno> |
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| 25 | #include <iomanip> |
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| 26 | #include <cstring> |
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| 27 | |
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| 28 | string parametersInputFilename = ""; |
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| 29 | string parametersOutputFilename = "no training"; |
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| 30 | string annotationFilename = ""; |
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| 31 | |
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| 32 | bool enableTraining = false; |
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| 33 | bool enableVerbose = false; |
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| 34 | bool enableAllPairs = false; |
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| 35 | bool enableAnnotation = false; |
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| 36 | bool enableViterbi = false; |
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| 37 | bool enableClustalWOutput = false; |
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| 38 | bool enableTrainEmissions = false; |
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| 39 | bool enableAlignOrder = false; |
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| 40 | int numConsistencyReps = 2; |
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| 41 | int numPreTrainingReps = 0; |
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| 42 | int numIterativeRefinementReps = 100; |
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| 43 | |
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| 44 | float cutoff = 0; |
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| 45 | float gapOpenPenalty = 0; |
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| 46 | float gapContinuePenalty = 0; |
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| 47 | |
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| 48 | VF initDistrib (NumMatrixTypes); |
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| 49 | VF gapOpen (2*NumInsertStates); |
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| 50 | VF gapExtend (2*NumInsertStates); |
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| 51 | VVF emitPairs (256, VF (256, 1e-10)); |
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| 52 | VF emitSingle (256, 1e-5); |
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| 53 | |
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| 54 | string alphabet = alphabetDefault; |
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| 55 | |
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| 56 | const int MIN_PRETRAINING_REPS = 0; |
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| 57 | const int MAX_PRETRAINING_REPS = 20; |
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| 58 | const int MIN_CONSISTENCY_REPS = 0; |
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| 59 | const int MAX_CONSISTENCY_REPS = 5; |
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| 60 | const int MIN_ITERATIVE_REFINEMENT_REPS = 0; |
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| 61 | const int MAX_ITERATIVE_REFINEMENT_REPS = 1000; |
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| 62 | |
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| 63 | ///////////////////////////////////////////////////////////////// |
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| 64 | // Function prototypes |
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| 65 | ///////////////////////////////////////////////////////////////// |
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| 66 | |
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| 67 | void PrintHeading(); |
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| 68 | void PrintParameters (const char *message, const VF &initDistrib, const VF &gapOpen, |
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| 69 | const VF &gapExtend, const VVF &emitPairs, const VF &emitSingle, const char *filename); |
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| 70 | MultiSequence *DoAlign (MultiSequence *sequence, const ProbabilisticModel &model, VF &initDistrib, VF &gapOpen, VF &gapExtend, |
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| 71 | VVF &emitPairs, VF &emitSingle); |
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| 72 | SafeVector<string> ParseParams (int argc, char **argv); |
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| 73 | void ReadParameters (); |
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| 74 | MultiSequence *ComputeFinalAlignment (const TreeNode *tree, MultiSequence *sequences, |
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| 75 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
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| 76 | const ProbabilisticModel &model); |
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| 77 | MultiSequence *AlignAlignments (MultiSequence *align1, MultiSequence *align2, |
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| 78 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
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| 79 | const ProbabilisticModel &model); |
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| 80 | SafeVector<SafeVector<SparseMatrix *> > DoRelaxation (MultiSequence *sequences, |
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| 81 | SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices); |
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| 82 | void Relax (SparseMatrix *matXZ, SparseMatrix *matZY, VF &posterior); |
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| 83 | void Relax1 (SparseMatrix *matXZ, SparseMatrix *matZY, VF &posterior); |
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| 84 | |
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| 85 | set<int> GetSubtree (const TreeNode *tree); |
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| 86 | void TreeBasedBiPartitioning (const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
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| 87 | const ProbabilisticModel &model, MultiSequence* &alignment, |
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| 88 | const TreeNode *tree); |
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| 89 | void DoIterativeRefinement (const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
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| 90 | const ProbabilisticModel &model, MultiSequence* &alignment); |
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| 91 | void WriteAnnotation (MultiSequence *alignment, |
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| 92 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices); |
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| 93 | int ComputeScore (const SafeVector<pair<int, int> > &active, |
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| 94 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices); |
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| 95 | |
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| 96 | |
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| 97 | ///////////////////////////////////////////////////////////////// |
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| 98 | // main() |
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| 99 | // |
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| 100 | // Calls all initialization routines and runs the PROBCONS |
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| 101 | // aligner. |
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| 102 | ///////////////////////////////////////////////////////////////// |
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| 103 | |
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| 104 | int main (int argc, char **argv){ |
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| 105 | |
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| 106 | // print PROBCONS heading |
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| 107 | PrintHeading(); |
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| 108 | |
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| 109 | // parse program parameters |
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| 110 | SafeVector<string> sequenceNames = ParseParams (argc, argv); |
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| 111 | ReadParameters(); |
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| 112 | PrintParameters ("Using parameter set:", initDistrib, gapOpen, gapExtend, emitPairs, emitSingle, NULL); |
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| 113 | |
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| 114 | // now, we'll process all the files given as input. If we are given |
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| 115 | // several filenames as input, then we'll load all of those sequences |
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| 116 | // simultaneously, as long as we're not training. On the other hand, |
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| 117 | // if we are training, then we'll treat each file as a separate |
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| 118 | // training instance |
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| 119 | |
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| 120 | // if we are training |
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| 121 | if (enableTraining){ |
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| 122 | |
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| 123 | // build new model for aligning |
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| 124 | ProbabilisticModel model (initDistrib, gapOpen, gapExtend, emitPairs, emitSingle); |
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| 125 | |
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| 126 | // prepare to average parameters |
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| 127 | for (int i = 0; i < (int) initDistrib.size(); i++) initDistrib[i] = 0; |
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| 128 | for (int i = 0; i < (int) gapOpen.size(); i++) gapOpen[i] = 0; |
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| 129 | for (int i = 0; i < (int) gapExtend.size(); i++) gapExtend[i] = 0; |
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| 130 | if (enableTrainEmissions){ |
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| 131 | for (int i = 0; i < (int) emitPairs.size(); i++) |
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| 132 | for (int j = 0; j < (int) emitPairs[i].size(); j++) emitPairs[i][j] = 0; |
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| 133 | for (int i = 0; i < (int) emitSingle.size(); i++) emitSingle[i] = 0; |
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| 134 | } |
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| 135 | |
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| 136 | // align each file individually |
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| 137 | for (int i = 0; i < (int) sequenceNames.size(); i++){ |
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| 138 | |
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| 139 | VF thisInitDistrib (NumMatrixTypes); |
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| 140 | VF thisGapOpen (2*NumInsertStates); |
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| 141 | VF thisGapExtend (2*NumInsertStates); |
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| 142 | VVF thisEmitPairs (256, VF (256, 1e-10)); |
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| 143 | VF thisEmitSingle (256, 1e-5); |
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| 144 | |
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| 145 | // load sequence file |
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| 146 | MultiSequence *sequences = new MultiSequence(); assert (sequences); |
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| 147 | cerr << "Loading sequence file: " << sequenceNames[i] << endl; |
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| 148 | sequences->LoadMFA (sequenceNames[i], true); |
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| 149 | |
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| 150 | // align sequences |
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| 151 | DoAlign (sequences, model, thisInitDistrib, thisGapOpen, thisGapExtend, thisEmitPairs, thisEmitSingle); |
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| 152 | |
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| 153 | // add in contribution of the derived parameters |
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| 154 | for (int i = 0; i < (int) initDistrib.size(); i++) initDistrib[i] += thisInitDistrib[i]; |
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| 155 | for (int i = 0; i < (int) gapOpen.size(); i++) gapOpen[i] += thisGapOpen[i]; |
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| 156 | for (int i = 0; i < (int) gapExtend.size(); i++) gapExtend[i] += thisGapExtend[i]; |
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| 157 | if (enableTrainEmissions){ |
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| 158 | for (int i = 0; i < (int) emitPairs.size(); i++) |
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| 159 | for (int j = 0; j < (int) emitPairs[i].size(); j++) emitPairs[i][j] += thisEmitPairs[i][j]; |
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| 160 | for (int i = 0; i < (int) emitSingle.size(); i++) emitSingle[i] += thisEmitSingle[i]; |
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| 161 | } |
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| 162 | |
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| 163 | delete sequences; |
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| 164 | } |
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| 165 | |
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| 166 | // compute new parameters and print them out |
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| 167 | for (int i = 0; i < (int) initDistrib.size(); i++) initDistrib[i] /= (int) sequenceNames.size(); |
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| 168 | for (int i = 0; i < (int) gapOpen.size(); i++) gapOpen[i] /= (int) sequenceNames.size(); |
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| 169 | for (int i = 0; i < (int) gapExtend.size(); i++) gapExtend[i] /= (int) sequenceNames.size(); |
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| 170 | if (enableTrainEmissions){ |
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| 171 | for (int i = 0; i < (int) emitPairs.size(); i++) |
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| 172 | for (int j = 0; j < (int) emitPairs[i].size(); j++) emitPairs[i][j] /= (int) sequenceNames.size(); |
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| 173 | for (int i = 0; i < (int) emitSingle.size(); i++) emitSingle[i] /= sequenceNames.size(); |
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| 174 | } |
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| 175 | |
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| 176 | PrintParameters ("Trained parameter set:", |
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| 177 | initDistrib, gapOpen, gapExtend, emitPairs, emitSingle, |
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| 178 | parametersOutputFilename.c_str()); |
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| 179 | } |
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| 180 | |
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| 181 | // if we are not training, we must simply want to align some sequences |
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| 182 | else { |
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| 183 | |
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| 184 | // load all files together |
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| 185 | MultiSequence *sequences = new MultiSequence(); assert (sequences); |
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| 186 | for (int i = 0; i < (int) sequenceNames.size(); i++){ |
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| 187 | cerr << "Loading sequence file: " << sequenceNames[i] << endl; |
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| 188 | sequences->LoadMFA (sequenceNames[i], true); |
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| 189 | } |
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| 190 | |
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| 191 | // do all "pre-training" repetitions first |
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| 192 | for (int ct = 0; ct < numPreTrainingReps; ct++){ |
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| 193 | enableTraining = true; |
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| 194 | |
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| 195 | // build new model for aligning |
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| 196 | ProbabilisticModel model (initDistrib, gapOpen, gapExtend, |
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| 197 | emitPairs, emitSingle); |
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| 198 | |
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| 199 | // do initial alignments |
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| 200 | DoAlign (sequences, model, initDistrib, gapOpen, gapExtend, emitPairs, emitSingle); |
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| 201 | |
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| 202 | // print new parameters |
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| 203 | PrintParameters ("Recomputed parameter set:", initDistrib, gapOpen, gapExtend, emitPairs, emitSingle, NULL); |
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| 204 | |
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| 205 | enableTraining = false; |
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| 206 | } |
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| 207 | |
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| 208 | // now, we can perform the alignments and write them out |
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| 209 | MultiSequence *alignment = DoAlign (sequences, |
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| 210 | ProbabilisticModel (initDistrib, gapOpen, gapExtend, emitPairs, emitSingle), |
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| 211 | initDistrib, gapOpen, gapExtend, emitPairs, emitSingle); |
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| 212 | |
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| 213 | if (!enableAllPairs){ |
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| 214 | if (enableClustalWOutput) |
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| 215 | alignment->WriteALN (cout); |
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| 216 | else |
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| 217 | alignment->WriteMFA (cout); |
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| 218 | } |
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| 219 | delete alignment; |
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| 220 | delete sequences; |
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| 221 | |
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| 222 | } |
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| 223 | } |
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| 224 | |
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| 225 | ///////////////////////////////////////////////////////////////// |
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| 226 | // PrintHeading() |
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| 227 | // |
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| 228 | // Prints heading for PROBCONS program. |
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| 229 | ///////////////////////////////////////////////////////////////// |
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| 230 | |
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| 231 | void PrintHeading (){ |
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| 232 | cerr << endl |
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| 233 | << "PROBCONS version " << VERSION << " - align multiple protein sequences and print to standard output" << endl |
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| 234 | << "Written by Chuong Do" << endl |
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| 235 | << endl; |
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| 236 | } |
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| 237 | |
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| 238 | ///////////////////////////////////////////////////////////////// |
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| 239 | // PrintParameters() |
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| 240 | // |
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| 241 | // Prints PROBCONS parameters to STDERR. If a filename is |
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| 242 | // specified, then the parameters are also written to the file. |
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| 243 | ///////////////////////////////////////////////////////////////// |
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| 244 | |
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| 245 | void PrintParameters (const char *message, const VF &initDistrib, const VF &gapOpen, |
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| 246 | const VF &gapExtend, const VVF &emitPairs, const VF &emitSingle, const char *filename){ |
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| 247 | |
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| 248 | // print parameters to the screen |
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| 249 | cerr << message << endl |
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| 250 | << " initDistrib[] = { "; |
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| 251 | for (int i = 0; i < NumMatrixTypes; i++) cerr << setprecision (10) << initDistrib[i] << " "; |
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| 252 | cerr << "}" << endl |
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| 253 | << " gapOpen[] = { "; |
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| 254 | for (int i = 0; i < NumInsertStates*2; i++) cerr << setprecision (10) << gapOpen[i] << " "; |
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| 255 | cerr << "}" << endl |
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| 256 | << " gapExtend[] = { "; |
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| 257 | for (int i = 0; i < NumInsertStates*2; i++) cerr << setprecision (10) << gapExtend[i] << " "; |
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| 258 | cerr << "}" << endl |
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| 259 | << endl; |
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| 260 | |
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| 261 | /* |
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| 262 | for (int i = 0; i < 5; i++){ |
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| 263 | for (int j = 0; j <= i; j++){ |
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| 264 | cerr << emitPairs[(unsigned char) alphabet[i]][(unsigned char) alphabet[j]] << " "; |
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| 265 | } |
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| 266 | cerr << endl; |
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| 267 | }*/ |
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| 268 | |
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| 269 | // if a file name is specified |
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| 270 | if (filename){ |
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| 271 | |
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| 272 | // attempt to open the file for writing |
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| 273 | FILE *file = fopen (filename, "w"); |
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| 274 | if (!file){ |
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| 275 | cerr << "ERROR: Unable to write parameter file: " << filename << endl; |
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| 276 | exit (1); |
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| 277 | } |
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| 278 | |
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| 279 | // if successful, then write the parameters to the file |
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| 280 | for (int i = 0; i < NumMatrixTypes; i++) { fprintf (file, "%.10f ", initDistrib[i]); } fprintf (file, "\n"); |
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| 281 | for (int i = 0; i < 2*NumInsertStates; i++) { fprintf (file, "%.10f ", gapOpen[i]); } fprintf (file, "\n"); |
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| 282 | for (int i = 0; i < 2*NumInsertStates; i++) { fprintf (file, "%.10f ", gapExtend[i]); } fprintf (file, "\n"); |
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| 283 | fprintf (file, "%s\n", alphabet.c_str()); |
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| 284 | for (int i = 0; i < (int) alphabet.size(); i++){ |
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| 285 | for (int j = 0; j <= i; j++) |
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| 286 | fprintf (file, "%.10f ", emitPairs[(unsigned char) alphabet[i]][(unsigned char) alphabet[j]]); |
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| 287 | fprintf (file, "\n"); |
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| 288 | } |
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| 289 | for (int i = 0; i < (int) alphabet.size(); i++) |
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| 290 | fprintf (file, "%.10f ", emitSingle[(unsigned char) alphabet[i]]); |
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| 291 | fprintf (file, "\n"); |
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| 292 | fclose (file); |
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| 293 | } |
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| 294 | } |
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| 295 | |
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| 296 | ///////////////////////////////////////////////////////////////// |
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| 297 | // DoAlign() |
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| 298 | // |
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| 299 | // First computes all pairwise posterior probability matrices. |
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| 300 | // Then, computes new parameters if training, or a final |
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| 301 | // alignment, otherwise. |
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| 302 | ///////////////////////////////////////////////////////////////// |
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| 303 | |
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| 304 | MultiSequence *DoAlign (MultiSequence *sequences, const ProbabilisticModel &model, VF &initDistrib, VF &gapOpen, |
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| 305 | VF &gapExtend, VVF &emitPairs, VF &emitSingle){ |
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| 306 | |
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| 307 | assert (sequences); |
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| 308 | |
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| 309 | const int numSeqs = sequences->GetNumSequences(); |
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| 310 | VVF distances (numSeqs, VF (numSeqs, 0)); |
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| 311 | SafeVector<SafeVector<SparseMatrix *> > sparseMatrices (numSeqs, SafeVector<SparseMatrix *>(numSeqs, NULL)); |
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| 312 | |
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| 313 | |
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| 314 | |
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| 315 | if (enableTraining){ |
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| 316 | // prepare to average parameters |
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| 317 | for (int i = 0; i < (int) initDistrib.size(); i++) initDistrib[i] = 0; |
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| 318 | for (int i = 0; i < (int) gapOpen.size(); i++) gapOpen[i] = 0; |
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| 319 | for (int i = 0; i < (int) gapExtend.size(); i++) gapExtend[i] = 0; |
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| 320 | if (enableTrainEmissions){ |
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| 321 | for (int i = 0; i < (int) emitPairs.size(); i++) |
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| 322 | for (int j = 0; j < (int) emitPairs[i].size(); j++) emitPairs[i][j] = 0; |
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| 323 | for (int i = 0; i < (int) emitSingle.size(); i++) emitSingle[i] = 0; |
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| 324 | } |
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| 325 | } |
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| 326 | |
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| 327 | // skip posterior calculations if we just want to do Viterbi alignments |
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| 328 | if (!enableViterbi){ |
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| 329 | |
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| 330 | // do all pairwise alignments for posterior probability matrices |
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| 331 | for (int a = 0; a < numSeqs-1; a++){ |
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| 332 | for (int b = a+1; b < numSeqs; b++){ |
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| 333 | Sequence *seq1 = sequences->GetSequence (a); |
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| 334 | Sequence *seq2 = sequences->GetSequence (b); |
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| 335 | |
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| 336 | // verbose output |
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| 337 | if (enableVerbose) |
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| 338 | cerr << "Computing posterior matrix: (" << a+1 << ") " << seq1->GetHeader() << " vs. " |
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| 339 | << "(" << b+1 << ") " << seq2->GetHeader() << " -- "; |
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| 340 | |
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| 341 | // compute forward and backward probabilities |
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| 342 | VF *forward = model.ComputeForwardMatrix (seq1, seq2); assert (forward); |
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| 343 | VF *backward = model.ComputeBackwardMatrix (seq1, seq2); assert (backward); |
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| 344 | |
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| 345 | // if we are training, then we'll simply want to compute the |
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| 346 | // expected counts for each region within the matrix separately; |
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| 347 | // otherwise, we'll need to put all of the regions together and |
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| 348 | // assemble a posterior probability match matrix |
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| 349 | |
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| 350 | // so, if we're training |
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| 351 | if (enableTraining){ |
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| 352 | |
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| 353 | // compute new parameters |
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| 354 | VF thisInitDistrib (NumMatrixTypes); |
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| 355 | VF thisGapOpen (2*NumInsertStates); |
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| 356 | VF thisGapExtend (2*NumInsertStates); |
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| 357 | VVF thisEmitPairs (256, VF (256, 1e-10)); |
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| 358 | VF thisEmitSingle (256, 1e-5); |
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| 359 | |
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| 360 | model.ComputeNewParameters (seq1, seq2, *forward, *backward, thisInitDistrib, thisGapOpen, thisGapExtend, thisEmitPairs, thisEmitSingle, enableTrainEmissions); |
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| 361 | |
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| 362 | // add in contribution of the derived parameters |
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| 363 | for (int i = 0; i < (int) initDistrib.size(); i++) initDistrib[i] += thisInitDistrib[i]; |
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| 364 | for (int i = 0; i < (int) gapOpen.size(); i++) gapOpen[i] += thisGapOpen[i]; |
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| 365 | for (int i = 0; i < (int) gapExtend.size(); i++) gapExtend[i] += thisGapExtend[i]; |
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| 366 | if (enableTrainEmissions){ |
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| 367 | for (int i = 0; i < (int) emitPairs.size(); i++) |
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| 368 | for (int j = 0; j < (int) emitPairs[i].size(); j++) emitPairs[i][j] += thisEmitPairs[i][j]; |
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| 369 | for (int i = 0; i < (int) emitSingle.size(); i++) emitSingle[i] += thisEmitSingle[i]; |
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| 370 | } |
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| 371 | |
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| 372 | // let us know that we're done. |
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| 373 | if (enableVerbose) cerr << "done." << endl; |
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| 374 | } |
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| 375 | else { |
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| 376 | |
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| 377 | // compute posterior probability matrix |
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| 378 | VF *posterior = model.ComputePosteriorMatrix (seq1, seq2, *forward, *backward); assert (posterior); |
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| 379 | |
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| 380 | // compute sparse representations |
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| 381 | sparseMatrices[a][b] = new SparseMatrix (seq1->GetLength(), seq2->GetLength(), *posterior); |
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| 382 | sparseMatrices[b][a] = NULL; |
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| 383 | |
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| 384 | if (!enableAllPairs){ |
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| 385 | // perform the pairwise sequence alignment |
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| 386 | pair<SafeVector<char> *, float> alignment = model.ComputeAlignment (seq1->GetLength(), |
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| 387 | seq2->GetLength(), |
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| 388 | *posterior); |
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| 389 | |
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| 390 | // compute "expected accuracy" distance for evolutionary tree computation |
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| 391 | float distance = alignment.second / min (seq1->GetLength(), seq2->GetLength()); |
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| 392 | distances[a][b] = distances[b][a] = distance; |
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| 393 | |
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| 394 | if (enableVerbose) |
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| 395 | cerr << setprecision (10) << distance << endl; |
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| 396 | |
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| 397 | delete alignment.first; |
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| 398 | } |
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| 399 | else { |
|---|
| 400 | // let us know that we're done. |
|---|
| 401 | if (enableVerbose) cerr << "done." << endl; |
|---|
| 402 | } |
|---|
| 403 | |
|---|
| 404 | delete posterior; |
|---|
| 405 | } |
|---|
| 406 | |
|---|
| 407 | delete forward; |
|---|
| 408 | delete backward; |
|---|
| 409 | } |
|---|
| 410 | } |
|---|
| 411 | } |
|---|
| 412 | |
|---|
| 413 | // now average out parameters derived |
|---|
| 414 | if (enableTraining){ |
|---|
| 415 | |
|---|
| 416 | // compute new parameters |
|---|
| 417 | for (int i = 0; i < (int) initDistrib.size(); i++) initDistrib[i] /= numSeqs * (numSeqs - 1) / 2; |
|---|
| 418 | for (int i = 0; i < (int) gapOpen.size(); i++) gapOpen[i] /= numSeqs * (numSeqs - 1) / 2; |
|---|
| 419 | for (int i = 0; i < (int) gapExtend.size(); i++) gapExtend[i] /= numSeqs * (numSeqs - 1) / 2; |
|---|
| 420 | |
|---|
| 421 | if (enableTrainEmissions){ |
|---|
| 422 | for (int i = 0; i < (int) emitPairs.size(); i++) |
|---|
| 423 | for (int j = 0; j < (int) emitPairs[i].size(); j++) emitPairs[i][j] /= numSeqs * (numSeqs - 1) / 2; |
|---|
| 424 | for (int i = 0; i < (int) emitSingle.size(); i++) emitSingle[i] /= numSeqs * (numSeqs - 1) / 2; |
|---|
| 425 | } |
|---|
| 426 | } |
|---|
| 427 | |
|---|
| 428 | // see if we still want to do some alignments |
|---|
| 429 | else { |
|---|
| 430 | |
|---|
| 431 | if (!enableViterbi){ |
|---|
| 432 | |
|---|
| 433 | // perform the consistency transformation the desired number of times |
|---|
| 434 | for (int r = 0; r < numConsistencyReps; r++){ |
|---|
| 435 | SafeVector<SafeVector<SparseMatrix *> > newSparseMatrices = DoRelaxation (sequences, sparseMatrices); |
|---|
| 436 | |
|---|
| 437 | // now replace the old posterior matrices |
|---|
| 438 | for (int i = 0; i < numSeqs; i++){ |
|---|
| 439 | for (int j = 0; j < numSeqs; j++){ |
|---|
| 440 | delete sparseMatrices[i][j]; |
|---|
| 441 | sparseMatrices[i][j] = newSparseMatrices[i][j]; |
|---|
| 442 | } |
|---|
| 443 | } |
|---|
| 444 | } |
|---|
| 445 | } |
|---|
| 446 | |
|---|
| 447 | MultiSequence *finalAlignment = NULL; |
|---|
| 448 | |
|---|
| 449 | if (enableAllPairs){ |
|---|
| 450 | for (int a = 0; a < numSeqs-1; a++){ |
|---|
| 451 | for (int b = a+1; b < numSeqs; b++){ |
|---|
| 452 | Sequence *seq1 = sequences->GetSequence (a); |
|---|
| 453 | Sequence *seq2 = sequences->GetSequence (b); |
|---|
| 454 | |
|---|
| 455 | if (enableVerbose) |
|---|
| 456 | cerr << "Performing pairwise alignment: (" << a+1 << ") " << seq1->GetHeader() << " vs. " |
|---|
| 457 | << "(" << b+1 << ") " << seq2->GetHeader() << " -- "; |
|---|
| 458 | |
|---|
| 459 | |
|---|
| 460 | // perform the pairwise sequence alignment |
|---|
| 461 | pair<SafeVector<char> *, float> alignment; |
|---|
| 462 | if (enableViterbi) |
|---|
| 463 | alignment = model.ComputeViterbiAlignment (seq1, seq2); |
|---|
| 464 | else { |
|---|
| 465 | |
|---|
| 466 | // build posterior matrix |
|---|
| 467 | VF *posterior = sparseMatrices[a][b]->GetPosterior(); assert (posterior); |
|---|
| 468 | int length = (seq1->GetLength() + 1) * (seq2->GetLength() + 1); |
|---|
| 469 | for (int i = 0; i < length; i++) (*posterior)[i] -= cutoff; |
|---|
| 470 | |
|---|
| 471 | alignment = model.ComputeAlignment (seq1->GetLength(), seq2->GetLength(), *posterior); |
|---|
| 472 | delete posterior; |
|---|
| 473 | } |
|---|
| 474 | |
|---|
| 475 | // write pairwise alignments |
|---|
| 476 | string name = seq1->GetHeader() + "-" + seq2->GetHeader() + (enableClustalWOutput ? ".aln" : ".fasta"); |
|---|
| 477 | ofstream outfile (name.c_str()); |
|---|
| 478 | |
|---|
| 479 | MultiSequence *result = new MultiSequence(); |
|---|
| 480 | result->AddSequence (seq1->AddGaps(alignment.first, 'X')); |
|---|
| 481 | result->AddSequence (seq2->AddGaps(alignment.first, 'Y')); |
|---|
| 482 | if (enableClustalWOutput) |
|---|
| 483 | result->WriteALN (outfile); |
|---|
| 484 | else |
|---|
| 485 | result->WriteMFA (outfile); |
|---|
| 486 | |
|---|
| 487 | outfile.close(); |
|---|
| 488 | |
|---|
| 489 | delete alignment.first; |
|---|
| 490 | } |
|---|
| 491 | } |
|---|
| 492 | } |
|---|
| 493 | |
|---|
| 494 | // now if we still need to do a final multiple alignment |
|---|
| 495 | else { |
|---|
| 496 | |
|---|
| 497 | if (enableVerbose) |
|---|
| 498 | cerr << endl; |
|---|
| 499 | |
|---|
| 500 | // compute the evolutionary tree |
|---|
| 501 | TreeNode *tree = TreeNode::ComputeTree (distances); |
|---|
| 502 | |
|---|
| 503 | tree->Print (cerr, sequences); |
|---|
| 504 | cerr << endl; |
|---|
| 505 | |
|---|
| 506 | // make the final alignment |
|---|
| 507 | finalAlignment = ComputeFinalAlignment (tree, sequences, sparseMatrices, model); |
|---|
| 508 | |
|---|
| 509 | // build annotation |
|---|
| 510 | if (enableAnnotation){ |
|---|
| 511 | WriteAnnotation (finalAlignment, sparseMatrices); |
|---|
| 512 | } |
|---|
| 513 | |
|---|
| 514 | delete tree; |
|---|
| 515 | } |
|---|
| 516 | |
|---|
| 517 | if (!enableViterbi){ |
|---|
| 518 | // delete sparse matrices |
|---|
| 519 | for (int a = 0; a < numSeqs-1; a++){ |
|---|
| 520 | for (int b = a+1; b < numSeqs; b++){ |
|---|
| 521 | delete sparseMatrices[a][b]; |
|---|
| 522 | delete sparseMatrices[b][a]; |
|---|
| 523 | } |
|---|
| 524 | } |
|---|
| 525 | } |
|---|
| 526 | |
|---|
| 527 | return finalAlignment; |
|---|
| 528 | } |
|---|
| 529 | |
|---|
| 530 | return NULL; |
|---|
| 531 | } |
|---|
| 532 | |
|---|
| 533 | ///////////////////////////////////////////////////////////////// |
|---|
| 534 | // GetInteger() |
|---|
| 535 | // |
|---|
| 536 | // Attempts to parse an integer from the character string given. |
|---|
| 537 | // Returns true only if no parsing error occurs. |
|---|
| 538 | ///////////////////////////////////////////////////////////////// |
|---|
| 539 | |
|---|
| 540 | bool GetInteger (char *data, int *val){ |
|---|
| 541 | char *endPtr; |
|---|
| 542 | long int retVal; |
|---|
| 543 | |
|---|
| 544 | assert (val); |
|---|
| 545 | |
|---|
| 546 | errno = 0; |
|---|
| 547 | retVal = strtol (data, &endPtr, 0); |
|---|
| 548 | if (retVal == 0 && (errno != 0 || data == endPtr)) return false; |
|---|
| 549 | if (errno != 0 && (retVal == LONG_MAX || retVal == LONG_MIN)) return false; |
|---|
| 550 | if (retVal < (long) INT_MIN || retVal > (long) INT_MAX) return false; |
|---|
| 551 | *val = (int) retVal; |
|---|
| 552 | return true; |
|---|
| 553 | } |
|---|
| 554 | |
|---|
| 555 | ///////////////////////////////////////////////////////////////// |
|---|
| 556 | // GetFloat() |
|---|
| 557 | // |
|---|
| 558 | // Attempts to parse a float from the character string given. |
|---|
| 559 | // Returns true only if no parsing error occurs. |
|---|
| 560 | ///////////////////////////////////////////////////////////////// |
|---|
| 561 | |
|---|
| 562 | bool GetFloat (char *data, float *val){ |
|---|
| 563 | char *endPtr; |
|---|
| 564 | double retVal; |
|---|
| 565 | |
|---|
| 566 | assert (val); |
|---|
| 567 | |
|---|
| 568 | errno = 0; |
|---|
| 569 | retVal = strtod (data, &endPtr); |
|---|
| 570 | if (retVal == 0 && (errno != 0 || data == endPtr)) return false; |
|---|
| 571 | if (errno != 0 && (retVal >= 1000000.0 || retVal <= -1000000.0)) return false; |
|---|
| 572 | *val = (float) retVal; |
|---|
| 573 | return true; |
|---|
| 574 | } |
|---|
| 575 | |
|---|
| 576 | ///////////////////////////////////////////////////////////////// |
|---|
| 577 | // ParseParams() |
|---|
| 578 | // |
|---|
| 579 | // Parse all command-line options. |
|---|
| 580 | ///////////////////////////////////////////////////////////////// |
|---|
| 581 | |
|---|
| 582 | SafeVector<string> ParseParams (int argc, char **argv){ |
|---|
| 583 | |
|---|
| 584 | if (argc < 2){ |
|---|
| 585 | |
|---|
| 586 | cerr << "PROBCONS comes with ABSOLUTELY NO WARRANTY. This is free software, and" << endl |
|---|
| 587 | << "you are welcome to redistribute it under certain conditions. See the" << endl |
|---|
| 588 | << "file COPYING.txt for details." << endl |
|---|
| 589 | << endl |
|---|
| 590 | << "Usage:" << endl |
|---|
| 591 | << " probcons [OPTION]... [MFAFILE]..." << endl |
|---|
| 592 | << endl |
|---|
| 593 | << "Description:" << endl |
|---|
| 594 | << " Align sequences in MFAFILE(s) and print result to standard output" << endl |
|---|
| 595 | << endl |
|---|
| 596 | << " -clustalw" << endl |
|---|
| 597 | << " use CLUSTALW output format instead of MFA" << endl |
|---|
| 598 | << endl |
|---|
| 599 | << " -c, --consistency REPS" << endl |
|---|
| 600 | << " use " << MIN_CONSISTENCY_REPS << " <= REPS <= " << MAX_CONSISTENCY_REPS |
|---|
| 601 | << " (default: " << numConsistencyReps << ") passes of consistency transformation" << endl |
|---|
| 602 | << endl |
|---|
| 603 | << " -ir, --iterative-refinement REPS" << endl |
|---|
| 604 | << " use " << MIN_ITERATIVE_REFINEMENT_REPS << " <= REPS <= " << MAX_ITERATIVE_REFINEMENT_REPS |
|---|
| 605 | << " (default: " << numIterativeRefinementReps << ") passes of iterative-refinement" << endl |
|---|
| 606 | << endl |
|---|
| 607 | << " -pre, --pre-training REPS" << endl |
|---|
| 608 | << " use " << MIN_PRETRAINING_REPS << " <= REPS <= " << MAX_PRETRAINING_REPS |
|---|
| 609 | << " (default: " << numPreTrainingReps << ") rounds of pretraining" << endl |
|---|
| 610 | << endl |
|---|
| 611 | << " -pairs" << endl |
|---|
| 612 | << " generate all-pairs pairwise alignments" << endl |
|---|
| 613 | << endl |
|---|
| 614 | << " -viterbi" << endl |
|---|
| 615 | << " use Viterbi algorithm to generate all pairs (automatically enables -pairs)" << endl |
|---|
| 616 | << endl |
|---|
| 617 | << " -v, --verbose" << endl |
|---|
| 618 | << " report progress while aligning (default: " << (enableVerbose ? "on" : "off") << ")" << endl |
|---|
| 619 | << endl |
|---|
| 620 | << " -annot FILENAME" << endl |
|---|
| 621 | << " write annotation for multiple alignment to FILENAME" << endl |
|---|
| 622 | << endl |
|---|
| 623 | << " -t, --train FILENAME" << endl |
|---|
| 624 | << " compute EM transition probabilities, store in FILENAME (default: " |
|---|
| 625 | << parametersOutputFilename << ")" << endl |
|---|
| 626 | << endl |
|---|
| 627 | << " -e, --emissions" << endl |
|---|
| 628 | << " also reestimate emission probabilities (default: " |
|---|
| 629 | << (enableTrainEmissions ? "on" : "off") << ")" << endl |
|---|
| 630 | << endl |
|---|
| 631 | << " -p, --paramfile FILENAME" << endl |
|---|
| 632 | << " read parameters from FILENAME (default: " |
|---|
| 633 | << parametersInputFilename << ")" << endl |
|---|
| 634 | << endl |
|---|
| 635 | << " -a, --alignment-order" << endl |
|---|
| 636 | << " print sequences in alignment order rather than input order (default: " |
|---|
| 637 | << (enableAlignOrder ? "on" : "off") << ")" << endl |
|---|
| 638 | << endl; |
|---|
| 639 | // << " -go, --gap-open VALUE" << endl |
|---|
| 640 | // << " gap opening penalty of VALUE <= 0 (default: " << gapOpenPenalty << ")" << endl |
|---|
| 641 | // << endl |
|---|
| 642 | // << " -ge, --gap-extension VALUE" << endl |
|---|
| 643 | // << " gap extension penalty of VALUE <= 0 (default: " << gapContinuePenalty << ")" << endl |
|---|
| 644 | // << endl |
|---|
| 645 | // << " -co, --cutoff CUTOFF" << endl |
|---|
| 646 | // << " subtract 0 <= CUTOFF <= 1 (default: " << cutoff << ") from all posterior values before final alignment" << endl |
|---|
| 647 | // << endl |
|---|
| 648 | |
|---|
| 649 | exit (1); |
|---|
| 650 | } |
|---|
| 651 | |
|---|
| 652 | SafeVector<string> sequenceNames; |
|---|
| 653 | int tempInt; |
|---|
| 654 | float tempFloat; |
|---|
| 655 | |
|---|
| 656 | for (int i = 1; i < argc; i++){ |
|---|
| 657 | if (argv[i][0] == '-'){ |
|---|
| 658 | |
|---|
| 659 | // training |
|---|
| 660 | if (!strcmp (argv[i], "-t") || !strcmp (argv[i], "--train")){ |
|---|
| 661 | enableTraining = true; |
|---|
| 662 | if (i < argc - 1) |
|---|
| 663 | parametersOutputFilename = string (argv[++i]); |
|---|
| 664 | else { |
|---|
| 665 | cerr << "ERROR: Filename expected for option " << argv[i] << endl; |
|---|
| 666 | exit (1); |
|---|
| 667 | } |
|---|
| 668 | } |
|---|
| 669 | |
|---|
| 670 | // emission training |
|---|
| 671 | else if (!strcmp (argv[i], "-e") || !strcmp (argv[i], "--emissions")){ |
|---|
| 672 | enableTrainEmissions = true; |
|---|
| 673 | } |
|---|
| 674 | |
|---|
| 675 | // parameter file |
|---|
| 676 | else if (!strcmp (argv[i], "-p") || !strcmp (argv[i], "--paramfile")){ |
|---|
| 677 | if (i < argc - 1) |
|---|
| 678 | parametersInputFilename = string (argv[++i]); |
|---|
| 679 | else { |
|---|
| 680 | cerr << "ERROR: Filename expected for option " << argv[i] << endl; |
|---|
| 681 | exit (1); |
|---|
| 682 | } |
|---|
| 683 | } |
|---|
| 684 | |
|---|
| 685 | // number of consistency transformations |
|---|
| 686 | else if (!strcmp (argv[i], "-c") || !strcmp (argv[i], "--consistency")){ |
|---|
| 687 | if (i < argc - 1){ |
|---|
| 688 | if (!GetInteger (argv[++i], &tempInt)){ |
|---|
| 689 | cerr << "ERROR: Invalid integer following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 690 | exit (1); |
|---|
| 691 | } |
|---|
| 692 | else { |
|---|
| 693 | if (tempInt < MIN_CONSISTENCY_REPS || tempInt > MAX_CONSISTENCY_REPS){ |
|---|
| 694 | cerr << "ERROR: For option " << argv[i-1] << ", integer must be between " |
|---|
| 695 | << MIN_CONSISTENCY_REPS << " and " << MAX_CONSISTENCY_REPS << "." << endl; |
|---|
| 696 | exit (1); |
|---|
| 697 | } |
|---|
| 698 | else |
|---|
| 699 | numConsistencyReps = tempInt; |
|---|
| 700 | } |
|---|
| 701 | } |
|---|
| 702 | else { |
|---|
| 703 | cerr << "ERROR: Integer expected for option " << argv[i] << endl; |
|---|
| 704 | exit (1); |
|---|
| 705 | } |
|---|
| 706 | } |
|---|
| 707 | |
|---|
| 708 | // number of randomized partitioning iterative refinement passes |
|---|
| 709 | else if (!strcmp (argv[i], "-ir") || !strcmp (argv[i], "--iterative-refinement")){ |
|---|
| 710 | if (i < argc - 1){ |
|---|
| 711 | if (!GetInteger (argv[++i], &tempInt)){ |
|---|
| 712 | cerr << "ERROR: Invalid integer following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 713 | exit (1); |
|---|
| 714 | } |
|---|
| 715 | else { |
|---|
| 716 | if (tempInt < MIN_ITERATIVE_REFINEMENT_REPS || tempInt > MAX_ITERATIVE_REFINEMENT_REPS){ |
|---|
| 717 | cerr << "ERROR: For option " << argv[i-1] << ", integer must be between " |
|---|
| 718 | << MIN_ITERATIVE_REFINEMENT_REPS << " and " << MAX_ITERATIVE_REFINEMENT_REPS << "." << endl; |
|---|
| 719 | exit (1); |
|---|
| 720 | } |
|---|
| 721 | else |
|---|
| 722 | numIterativeRefinementReps = tempInt; |
|---|
| 723 | } |
|---|
| 724 | } |
|---|
| 725 | else { |
|---|
| 726 | cerr << "ERROR: Integer expected for option " << argv[i] << endl; |
|---|
| 727 | exit (1); |
|---|
| 728 | } |
|---|
| 729 | } |
|---|
| 730 | |
|---|
| 731 | // number of EM pre-training rounds |
|---|
| 732 | else if (!strcmp (argv[i], "-pre") || !strcmp (argv[i], "--pre-training")){ |
|---|
| 733 | if (i < argc - 1){ |
|---|
| 734 | if (!GetInteger (argv[++i], &tempInt)){ |
|---|
| 735 | cerr << "ERROR: Invalid integer following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 736 | exit (1); |
|---|
| 737 | } |
|---|
| 738 | else { |
|---|
| 739 | if (tempInt < MIN_PRETRAINING_REPS || tempInt > MAX_PRETRAINING_REPS){ |
|---|
| 740 | cerr << "ERROR: For option " << argv[i-1] << ", integer must be between " |
|---|
| 741 | << MIN_PRETRAINING_REPS << " and " << MAX_PRETRAINING_REPS << "." << endl; |
|---|
| 742 | exit (1); |
|---|
| 743 | } |
|---|
| 744 | else |
|---|
| 745 | numPreTrainingReps = tempInt; |
|---|
| 746 | } |
|---|
| 747 | } |
|---|
| 748 | else { |
|---|
| 749 | cerr << "ERROR: Integer expected for option " << argv[i] << endl; |
|---|
| 750 | exit (1); |
|---|
| 751 | } |
|---|
| 752 | } |
|---|
| 753 | |
|---|
| 754 | // gap open penalty |
|---|
| 755 | else if (!strcmp (argv[i], "-go") || !strcmp (argv[i], "--gap-open")){ |
|---|
| 756 | if (i < argc - 1){ |
|---|
| 757 | if (!GetFloat (argv[++i], &tempFloat)){ |
|---|
| 758 | cerr << "ERROR: Invalid floating-point value following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 759 | exit (1); |
|---|
| 760 | } |
|---|
| 761 | else { |
|---|
| 762 | if (tempFloat > 0){ |
|---|
| 763 | cerr << "ERROR: For option " << argv[i-1] << ", floating-point value must not be positive." << endl; |
|---|
| 764 | exit (1); |
|---|
| 765 | } |
|---|
| 766 | else |
|---|
| 767 | gapOpenPenalty = tempFloat; |
|---|
| 768 | } |
|---|
| 769 | } |
|---|
| 770 | else { |
|---|
| 771 | cerr << "ERROR: Floating-point value expected for option " << argv[i] << endl; |
|---|
| 772 | exit (1); |
|---|
| 773 | } |
|---|
| 774 | } |
|---|
| 775 | |
|---|
| 776 | // gap extension penalty |
|---|
| 777 | else if (!strcmp (argv[i], "-ge") || !strcmp (argv[i], "--gap-extension")){ |
|---|
| 778 | if (i < argc - 1){ |
|---|
| 779 | if (!GetFloat (argv[++i], &tempFloat)){ |
|---|
| 780 | cerr << "ERROR: Invalid floating-point value following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 781 | exit (1); |
|---|
| 782 | } |
|---|
| 783 | else { |
|---|
| 784 | if (tempFloat > 0){ |
|---|
| 785 | cerr << "ERROR: For option " << argv[i-1] << ", floating-point value must not be positive." << endl; |
|---|
| 786 | exit (1); |
|---|
| 787 | } |
|---|
| 788 | else |
|---|
| 789 | gapContinuePenalty = tempFloat; |
|---|
| 790 | } |
|---|
| 791 | } |
|---|
| 792 | else { |
|---|
| 793 | cerr << "ERROR: Floating-point value expected for option " << argv[i] << endl; |
|---|
| 794 | exit (1); |
|---|
| 795 | } |
|---|
| 796 | } |
|---|
| 797 | |
|---|
| 798 | // all-pairs pairwise alignments |
|---|
| 799 | else if (!strcmp (argv[i], "-pairs")){ |
|---|
| 800 | enableAllPairs = true; |
|---|
| 801 | } |
|---|
| 802 | |
|---|
| 803 | // all-pairs pairwise Viterbi alignments |
|---|
| 804 | else if (!strcmp (argv[i], "-viterbi")){ |
|---|
| 805 | enableAllPairs = true; |
|---|
| 806 | enableViterbi = true; |
|---|
| 807 | } |
|---|
| 808 | |
|---|
| 809 | // annotation files |
|---|
| 810 | else if (!strcmp (argv[i], "-annot")){ |
|---|
| 811 | enableAnnotation = true; |
|---|
| 812 | if (i < argc - 1) |
|---|
| 813 | annotationFilename = argv[++i]; |
|---|
| 814 | else { |
|---|
| 815 | cerr << "ERROR: FILENAME expected for option " << argv[i] << endl; |
|---|
| 816 | exit (1); |
|---|
| 817 | } |
|---|
| 818 | } |
|---|
| 819 | |
|---|
| 820 | // clustalw output format |
|---|
| 821 | else if (!strcmp (argv[i], "-clustalw")){ |
|---|
| 822 | enableClustalWOutput = true; |
|---|
| 823 | } |
|---|
| 824 | |
|---|
| 825 | // cutoff |
|---|
| 826 | else if (!strcmp (argv[i], "-co") || !strcmp (argv[i], "--cutoff")){ |
|---|
| 827 | if (i < argc - 1){ |
|---|
| 828 | if (!GetFloat (argv[++i], &tempFloat)){ |
|---|
| 829 | cerr << "ERROR: Invalid floating-point value following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 830 | exit (1); |
|---|
| 831 | } |
|---|
| 832 | else { |
|---|
| 833 | if (tempFloat < 0 || tempFloat > 1){ |
|---|
| 834 | cerr << "ERROR: For option " << argv[i-1] << ", floating-point value must be between 0 and 1." << endl; |
|---|
| 835 | exit (1); |
|---|
| 836 | } |
|---|
| 837 | else |
|---|
| 838 | cutoff = tempFloat; |
|---|
| 839 | } |
|---|
| 840 | } |
|---|
| 841 | else { |
|---|
| 842 | cerr << "ERROR: Floating-point value expected for option " << argv[i] << endl; |
|---|
| 843 | exit (1); |
|---|
| 844 | } |
|---|
| 845 | } |
|---|
| 846 | |
|---|
| 847 | // verbose reporting |
|---|
| 848 | else if (!strcmp (argv[i], "-v") || !strcmp (argv[i], "--verbose")){ |
|---|
| 849 | enableVerbose = true; |
|---|
| 850 | } |
|---|
| 851 | |
|---|
| 852 | // alignment order |
|---|
| 853 | else if (!strcmp (argv[i], "-a") || !strcmp (argv[i], "--alignment-order")){ |
|---|
| 854 | enableAlignOrder = true; |
|---|
| 855 | } |
|---|
| 856 | |
|---|
| 857 | // bad arguments |
|---|
| 858 | else { |
|---|
| 859 | cerr << "ERROR: Unrecognized option: " << argv[i] << endl; |
|---|
| 860 | exit (1); |
|---|
| 861 | } |
|---|
| 862 | } |
|---|
| 863 | else { |
|---|
| 864 | sequenceNames.push_back (string (argv[i])); |
|---|
| 865 | } |
|---|
| 866 | } |
|---|
| 867 | |
|---|
| 868 | if (enableTrainEmissions && !enableTraining){ |
|---|
| 869 | cerr << "ERROR: Training emissions (-e) requires training (-t)" << endl; |
|---|
| 870 | exit (1); |
|---|
| 871 | } |
|---|
| 872 | |
|---|
| 873 | return sequenceNames; |
|---|
| 874 | } |
|---|
| 875 | |
|---|
| 876 | ///////////////////////////////////////////////////////////////// |
|---|
| 877 | // ReadParameters() |
|---|
| 878 | // |
|---|
| 879 | // Read initial distribution, transition, and emission |
|---|
| 880 | // parameters from a file. |
|---|
| 881 | ///////////////////////////////////////////////////////////////// |
|---|
| 882 | |
|---|
| 883 | void ReadParameters (){ |
|---|
| 884 | |
|---|
| 885 | ifstream data; |
|---|
| 886 | |
|---|
| 887 | emitPairs = VVF (256, VF (256, 1e-10)); |
|---|
| 888 | emitSingle = VF (256, 1e-5); |
|---|
| 889 | |
|---|
| 890 | // read initial state distribution and transition parameters |
|---|
| 891 | if (parametersInputFilename == string ("")){ |
|---|
| 892 | if (NumInsertStates == 1){ |
|---|
| 893 | for (int i = 0; i < NumMatrixTypes; i++) initDistrib[i] = initDistrib1Default[i]; |
|---|
| 894 | for (int i = 0; i < 2*NumInsertStates; i++) gapOpen[i] = gapOpen1Default[i]; |
|---|
| 895 | for (int i = 0; i < 2*NumInsertStates; i++) gapExtend[i] = gapExtend1Default[i]; |
|---|
| 896 | } |
|---|
| 897 | else if (NumInsertStates == 2){ |
|---|
| 898 | for (int i = 0; i < NumMatrixTypes; i++) initDistrib[i] = initDistrib2Default[i]; |
|---|
| 899 | for (int i = 0; i < 2*NumInsertStates; i++) gapOpen[i] = gapOpen2Default[i]; |
|---|
| 900 | for (int i = 0; i < 2*NumInsertStates; i++) gapExtend[i] = gapExtend2Default[i]; |
|---|
| 901 | } |
|---|
| 902 | else { |
|---|
| 903 | cerr << "ERROR: No default initial distribution/parameter settings exist" << endl |
|---|
| 904 | << " for " << NumInsertStates << " pairs of insert states. Use --paramfile." << endl; |
|---|
| 905 | exit (1); |
|---|
| 906 | } |
|---|
| 907 | |
|---|
| 908 | alphabet = alphabetDefault; |
|---|
| 909 | |
|---|
| 910 | for (int i = 0; i < (int) alphabet.length(); i++){ |
|---|
| 911 | emitSingle[(unsigned char) tolower(alphabet[i])] = emitSingleDefault[i]; |
|---|
| 912 | emitSingle[(unsigned char) toupper(alphabet[i])] = emitSingleDefault[i]; |
|---|
| 913 | for (int j = 0; j <= i; j++){ |
|---|
| 914 | emitPairs[(unsigned char) tolower(alphabet[i])][(unsigned char) tolower(alphabet[j])] = emitPairsDefault[i][j]; |
|---|
| 915 | emitPairs[(unsigned char) tolower(alphabet[i])][(unsigned char) toupper(alphabet[j])] = emitPairsDefault[i][j]; |
|---|
| 916 | emitPairs[(unsigned char) toupper(alphabet[i])][(unsigned char) tolower(alphabet[j])] = emitPairsDefault[i][j]; |
|---|
| 917 | emitPairs[(unsigned char) toupper(alphabet[i])][(unsigned char) toupper(alphabet[j])] = emitPairsDefault[i][j]; |
|---|
| 918 | emitPairs[(unsigned char) tolower(alphabet[j])][(unsigned char) tolower(alphabet[i])] = emitPairsDefault[i][j]; |
|---|
| 919 | emitPairs[(unsigned char) tolower(alphabet[j])][(unsigned char) toupper(alphabet[i])] = emitPairsDefault[i][j]; |
|---|
| 920 | emitPairs[(unsigned char) toupper(alphabet[j])][(unsigned char) tolower(alphabet[i])] = emitPairsDefault[i][j]; |
|---|
| 921 | emitPairs[(unsigned char) toupper(alphabet[j])][(unsigned char) toupper(alphabet[i])] = emitPairsDefault[i][j]; |
|---|
| 922 | } |
|---|
| 923 | } |
|---|
| 924 | } |
|---|
| 925 | else { |
|---|
| 926 | data.open (parametersInputFilename.c_str()); |
|---|
| 927 | if (data.fail()){ |
|---|
| 928 | cerr << "ERROR: Unable to read parameter file: " << parametersInputFilename << endl; |
|---|
| 929 | exit (1); |
|---|
| 930 | } |
|---|
| 931 | |
|---|
| 932 | string line[3]; |
|---|
| 933 | for (int i = 0; i < 3; i++){ |
|---|
| 934 | if (!getline (data, line[i])){ |
|---|
| 935 | cerr << "ERROR: Unable to read transition parameters from parameter file: " << parametersInputFilename << endl; |
|---|
| 936 | exit (1); |
|---|
| 937 | } |
|---|
| 938 | } |
|---|
| 939 | istringstream data2; |
|---|
| 940 | data2.clear(); data2.str (line[0]); for (int i = 0; i < NumMatrixTypes; i++) data2 >> initDistrib[i]; |
|---|
| 941 | data2.clear(); data2.str (line[1]); for (int i = 0; i < 2*NumInsertStates; i++) data2 >> gapOpen[i]; |
|---|
| 942 | data2.clear(); data2.str (line[2]); for (int i = 0; i < 2*NumInsertStates; i++) data2 >> gapExtend[i]; |
|---|
| 943 | |
|---|
| 944 | if (!getline (data, line[0])){ |
|---|
| 945 | cerr << "ERROR: Unable to read alphabet from scoring matrix file: " << parametersInputFilename << endl; |
|---|
| 946 | exit (1); |
|---|
| 947 | } |
|---|
| 948 | |
|---|
| 949 | // read alphabet as concatenation of all characters on alphabet line |
|---|
| 950 | alphabet = ""; |
|---|
| 951 | string token; |
|---|
| 952 | data2.clear(); data2.str (line[0]); while (data2 >> token) alphabet += token; |
|---|
| 953 | |
|---|
| 954 | for (int i = 0; i < (int) alphabet.size(); i++){ |
|---|
| 955 | for (int j = 0; j <= i; j++){ |
|---|
| 956 | float val; |
|---|
| 957 | data >> val; |
|---|
| 958 | emitPairs[(unsigned char) tolower(alphabet[i])][(unsigned char) tolower(alphabet[j])] = val; |
|---|
| 959 | emitPairs[(unsigned char) tolower(alphabet[i])][(unsigned char) toupper(alphabet[j])] = val; |
|---|
| 960 | emitPairs[(unsigned char) toupper(alphabet[i])][(unsigned char) tolower(alphabet[j])] = val; |
|---|
| 961 | emitPairs[(unsigned char) toupper(alphabet[i])][(unsigned char) toupper(alphabet[j])] = val; |
|---|
| 962 | emitPairs[(unsigned char) tolower(alphabet[j])][(unsigned char) tolower(alphabet[i])] = val; |
|---|
| 963 | emitPairs[(unsigned char) tolower(alphabet[j])][(unsigned char) toupper(alphabet[i])] = val; |
|---|
| 964 | emitPairs[(unsigned char) toupper(alphabet[j])][(unsigned char) tolower(alphabet[i])] = val; |
|---|
| 965 | emitPairs[(unsigned char) toupper(alphabet[j])][(unsigned char) toupper(alphabet[i])] = val; |
|---|
| 966 | } |
|---|
| 967 | } |
|---|
| 968 | |
|---|
| 969 | for (int i = 0; i < (int) alphabet.size(); i++){ |
|---|
| 970 | float val; |
|---|
| 971 | data >> val; |
|---|
| 972 | emitSingle[(unsigned char) tolower(alphabet[i])] = val; |
|---|
| 973 | emitSingle[(unsigned char) toupper(alphabet[i])] = val; |
|---|
| 974 | } |
|---|
| 975 | data.close(); |
|---|
| 976 | } |
|---|
| 977 | } |
|---|
| 978 | |
|---|
| 979 | ///////////////////////////////////////////////////////////////// |
|---|
| 980 | // ProcessTree() |
|---|
| 981 | // |
|---|
| 982 | // Process the tree recursively. Returns the aligned sequences |
|---|
| 983 | // corresponding to a node or leaf of the tree. |
|---|
| 984 | ///////////////////////////////////////////////////////////////// |
|---|
| 985 | |
|---|
| 986 | MultiSequence *ProcessTree (const TreeNode *tree, MultiSequence *sequences, |
|---|
| 987 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
|---|
| 988 | const ProbabilisticModel &model){ |
|---|
| 989 | MultiSequence *result; |
|---|
| 990 | |
|---|
| 991 | // check if this is a node of the alignment tree |
|---|
| 992 | if (tree->GetSequenceLabel() == -1){ |
|---|
| 993 | MultiSequence *alignLeft = ProcessTree (tree->GetLeftChild(), sequences, sparseMatrices, model); |
|---|
| 994 | MultiSequence *alignRight = ProcessTree (tree->GetRightChild(), sequences, sparseMatrices, model); |
|---|
| 995 | |
|---|
| 996 | assert (alignLeft); |
|---|
| 997 | assert (alignRight); |
|---|
| 998 | |
|---|
| 999 | result = AlignAlignments (alignLeft, alignRight, sparseMatrices, model); |
|---|
| 1000 | assert (result); |
|---|
| 1001 | |
|---|
| 1002 | delete alignLeft; |
|---|
| 1003 | delete alignRight; |
|---|
| 1004 | } |
|---|
| 1005 | |
|---|
| 1006 | // otherwise, this is a leaf of the alignment tree |
|---|
| 1007 | else { |
|---|
| 1008 | result = new MultiSequence(); assert (result); |
|---|
| 1009 | result->AddSequence (sequences->GetSequence(tree->GetSequenceLabel())->Clone()); |
|---|
| 1010 | } |
|---|
| 1011 | |
|---|
| 1012 | return result; |
|---|
| 1013 | } |
|---|
| 1014 | |
|---|
| 1015 | ///////////////////////////////////////////////////////////////// |
|---|
| 1016 | // ComputeFinalAlignment() |
|---|
| 1017 | // |
|---|
| 1018 | // Compute the final alignment by calling ProcessTree(), then |
|---|
| 1019 | // performing iterative refinement as needed. |
|---|
| 1020 | ///////////////////////////////////////////////////////////////// |
|---|
| 1021 | |
|---|
| 1022 | MultiSequence *ComputeFinalAlignment (const TreeNode *tree, MultiSequence *sequences, |
|---|
| 1023 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
|---|
| 1024 | const ProbabilisticModel &model){ |
|---|
| 1025 | |
|---|
| 1026 | MultiSequence *alignment = ProcessTree (tree, sequences, sparseMatrices, model); |
|---|
| 1027 | |
|---|
| 1028 | SafeVector<int> oldOrdering; |
|---|
| 1029 | if (enableAlignOrder){ |
|---|
| 1030 | for (int i = 0; i < alignment->GetNumSequences(); i++) |
|---|
| 1031 | oldOrdering.push_back (alignment->GetSequence(i)->GetSortLabel()); |
|---|
| 1032 | alignment->SaveOrdering(); |
|---|
| 1033 | enableAlignOrder = false; |
|---|
| 1034 | } |
|---|
| 1035 | |
|---|
| 1036 | // tree-based refinement |
|---|
| 1037 | // TreeBasedBiPartitioning (sparseMatrices, model, alignment, tree); |
|---|
| 1038 | |
|---|
| 1039 | // iterative refinement |
|---|
| 1040 | for (int i = 0; i < numIterativeRefinementReps; i++) |
|---|
| 1041 | DoIterativeRefinement (sparseMatrices, model, alignment); |
|---|
| 1042 | |
|---|
| 1043 | cerr << endl; |
|---|
| 1044 | |
|---|
| 1045 | if (oldOrdering.size() > 0){ |
|---|
| 1046 | for (int i = 0; i < (int) oldOrdering.size(); i++){ |
|---|
| 1047 | alignment->GetSequence(i)->SetSortLabel(oldOrdering[i]); |
|---|
| 1048 | } |
|---|
| 1049 | } |
|---|
| 1050 | |
|---|
| 1051 | // return final alignment |
|---|
| 1052 | return alignment; |
|---|
| 1053 | } |
|---|
| 1054 | |
|---|
| 1055 | ///////////////////////////////////////////////////////////////// |
|---|
| 1056 | // AlignAlignments() |
|---|
| 1057 | // |
|---|
| 1058 | // Returns the alignment of two MultiSequence objects. |
|---|
| 1059 | ///////////////////////////////////////////////////////////////// |
|---|
| 1060 | |
|---|
| 1061 | MultiSequence *AlignAlignments (MultiSequence *align1, MultiSequence *align2, |
|---|
| 1062 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
|---|
| 1063 | const ProbabilisticModel &model){ |
|---|
| 1064 | |
|---|
| 1065 | // print some info about the alignment |
|---|
| 1066 | if (enableVerbose){ |
|---|
| 1067 | for (int i = 0; i < align1->GetNumSequences(); i++) |
|---|
| 1068 | cerr << ((i==0) ? "[" : ",") << align1->GetSequence(i)->GetLabel(); |
|---|
| 1069 | cerr << "] vs. "; |
|---|
| 1070 | for (int i = 0; i < align2->GetNumSequences(); i++) |
|---|
| 1071 | cerr << ((i==0) ? "[" : ",") << align2->GetSequence(i)->GetLabel(); |
|---|
| 1072 | cerr << "]: "; |
|---|
| 1073 | } |
|---|
| 1074 | |
|---|
| 1075 | VF *posterior = model.BuildPosterior (align1, align2, sparseMatrices, cutoff); |
|---|
| 1076 | pair<SafeVector<char> *, float> alignment; |
|---|
| 1077 | |
|---|
| 1078 | // choose the alignment routine depending on the "cosmetic" gap penalties used |
|---|
| 1079 | if (gapOpenPenalty == 0 && gapContinuePenalty == 0) |
|---|
| 1080 | alignment = model.ComputeAlignment (align1->GetSequence(0)->GetLength(), align2->GetSequence(0)->GetLength(), *posterior); |
|---|
| 1081 | else |
|---|
| 1082 | alignment = model.ComputeAlignmentWithGapPenalties (align1, align2, |
|---|
| 1083 | *posterior, align1->GetNumSequences(), align2->GetNumSequences(), |
|---|
| 1084 | gapOpenPenalty, gapContinuePenalty); |
|---|
| 1085 | |
|---|
| 1086 | delete posterior; |
|---|
| 1087 | |
|---|
| 1088 | if (enableVerbose){ |
|---|
| 1089 | |
|---|
| 1090 | // compute total length of sequences |
|---|
| 1091 | int totLength = 0; |
|---|
| 1092 | for (int i = 0; i < align1->GetNumSequences(); i++) |
|---|
| 1093 | for (int j = 0; j < align2->GetNumSequences(); j++) |
|---|
| 1094 | totLength += min (align1->GetSequence(i)->GetLength(), align2->GetSequence(j)->GetLength()); |
|---|
| 1095 | |
|---|
| 1096 | // give an "accuracy" measure for the alignment |
|---|
| 1097 | cerr << alignment.second / totLength << endl; |
|---|
| 1098 | } |
|---|
| 1099 | |
|---|
| 1100 | // now build final alignment |
|---|
| 1101 | MultiSequence *result = new MultiSequence(); |
|---|
| 1102 | for (int i = 0; i < align1->GetNumSequences(); i++) |
|---|
| 1103 | result->AddSequence (align1->GetSequence(i)->AddGaps(alignment.first, 'X')); |
|---|
| 1104 | for (int i = 0; i < align2->GetNumSequences(); i++) |
|---|
| 1105 | result->AddSequence (align2->GetSequence(i)->AddGaps(alignment.first, 'Y')); |
|---|
| 1106 | if (!enableAlignOrder) |
|---|
| 1107 | result->SortByLabel(); |
|---|
| 1108 | |
|---|
| 1109 | // free temporary alignment |
|---|
| 1110 | delete alignment.first; |
|---|
| 1111 | |
|---|
| 1112 | return result; |
|---|
| 1113 | } |
|---|
| 1114 | |
|---|
| 1115 | ///////////////////////////////////////////////////////////////// |
|---|
| 1116 | // DoRelaxation() |
|---|
| 1117 | // |
|---|
| 1118 | // Performs one round of the consistency transformation. The |
|---|
| 1119 | // formula used is: |
|---|
| 1120 | // 1 |
|---|
| 1121 | // P'(x[i]-y[j]) = --- sum sum P(x[i]-z[k]) P(z[k]-y[j]) |
|---|
| 1122 | // |S| z in S k |
|---|
| 1123 | // |
|---|
| 1124 | // where S = {x, y, all other sequences...} |
|---|
| 1125 | // |
|---|
| 1126 | ///////////////////////////////////////////////////////////////// |
|---|
| 1127 | |
|---|
| 1128 | SafeVector<SafeVector<SparseMatrix *> > DoRelaxation (MultiSequence *sequences, |
|---|
| 1129 | SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices){ |
|---|
| 1130 | const int numSeqs = sequences->GetNumSequences(); |
|---|
| 1131 | |
|---|
| 1132 | SafeVector<SafeVector<SparseMatrix *> > newSparseMatrices (numSeqs, SafeVector<SparseMatrix *>(numSeqs, NULL)); |
|---|
| 1133 | |
|---|
| 1134 | // for every pair of sequences |
|---|
| 1135 | for (int i = 0; i < numSeqs; i++){ |
|---|
| 1136 | for (int j = i+1; j < numSeqs; j++){ |
|---|
| 1137 | Sequence *seq1 = sequences->GetSequence (i); |
|---|
| 1138 | Sequence *seq2 = sequences->GetSequence (j); |
|---|
| 1139 | |
|---|
| 1140 | if (enableVerbose) |
|---|
| 1141 | cerr << "Relaxing (" << i+1 << ") " << seq1->GetHeader() << " vs. " |
|---|
| 1142 | << "(" << j+1 << ") " << seq2->GetHeader() << ": "; |
|---|
| 1143 | |
|---|
| 1144 | // get the original posterior matrix |
|---|
| 1145 | VF *posteriorPtr = sparseMatrices[i][j]->GetPosterior(); assert (posteriorPtr); |
|---|
| 1146 | VF &posterior = *posteriorPtr; |
|---|
| 1147 | |
|---|
| 1148 | const int seq1Length = seq1->GetLength(); |
|---|
| 1149 | const int seq2Length = seq2->GetLength(); |
|---|
| 1150 | |
|---|
| 1151 | // contribution from the summation where z = x and z = y |
|---|
| 1152 | for (int k = 0; k < (seq1Length+1) * (seq2Length+1); k++) posterior[k] += posterior[k]; |
|---|
| 1153 | |
|---|
| 1154 | if (enableVerbose) |
|---|
| 1155 | cerr << sparseMatrices[i][j]->GetNumCells() << " --> "; |
|---|
| 1156 | |
|---|
| 1157 | // contribution from all other sequences |
|---|
| 1158 | for (int k = 0; k < numSeqs; k++) if (k != i && k != j){ |
|---|
| 1159 | if (k < i) |
|---|
| 1160 | Relax1 (sparseMatrices[k][i], sparseMatrices[k][j], posterior); |
|---|
| 1161 | else if (k > i && k < j) |
|---|
| 1162 | Relax (sparseMatrices[i][k], sparseMatrices[k][j], posterior); |
|---|
| 1163 | else { |
|---|
| 1164 | SparseMatrix *temp = sparseMatrices[j][k]->ComputeTranspose(); |
|---|
| 1165 | Relax (sparseMatrices[i][k], temp, posterior); |
|---|
| 1166 | delete temp; |
|---|
| 1167 | } |
|---|
| 1168 | } |
|---|
| 1169 | |
|---|
| 1170 | // now renormalization |
|---|
| 1171 | for (int k = 0; k < (seq1Length+1) * (seq2Length+1); k++) posterior[k] /= numSeqs; |
|---|
| 1172 | |
|---|
| 1173 | // mask out positions not originally in the posterior matrix |
|---|
| 1174 | SparseMatrix *matXY = sparseMatrices[i][j]; |
|---|
| 1175 | for (int y = 0; y <= seq2Length; y++) posterior[y] = 0; |
|---|
| 1176 | for (int x = 1; x <= seq1Length; x++){ |
|---|
| 1177 | SafeVector<PIF>::iterator XYptr = matXY->GetRowPtr(x); |
|---|
| 1178 | SafeVector<PIF>::iterator XYend = XYptr + matXY->GetRowSize(x); |
|---|
| 1179 | VF::iterator base = posterior.begin() + x * (seq2Length + 1); |
|---|
| 1180 | int curr = 0; |
|---|
| 1181 | while (XYptr != XYend){ |
|---|
| 1182 | |
|---|
| 1183 | // zero out all cells until the first filled column |
|---|
| 1184 | while (curr < XYptr->first){ |
|---|
| 1185 | base[curr] = 0; |
|---|
| 1186 | curr++; |
|---|
| 1187 | } |
|---|
| 1188 | |
|---|
| 1189 | // now, skip over this column |
|---|
| 1190 | curr++; |
|---|
| 1191 | ++XYptr; |
|---|
| 1192 | } |
|---|
| 1193 | |
|---|
| 1194 | // zero out cells after last column |
|---|
| 1195 | while (curr <= seq2Length){ |
|---|
| 1196 | base[curr] = 0; |
|---|
| 1197 | curr++; |
|---|
| 1198 | } |
|---|
| 1199 | } |
|---|
| 1200 | |
|---|
| 1201 | // save the new posterior matrix |
|---|
| 1202 | newSparseMatrices[i][j] = new SparseMatrix (seq1->GetLength(), seq2->GetLength(), posterior); |
|---|
| 1203 | newSparseMatrices[j][i] = NULL; |
|---|
| 1204 | |
|---|
| 1205 | if (enableVerbose) |
|---|
| 1206 | cerr << newSparseMatrices[i][j]->GetNumCells() << " -- "; |
|---|
| 1207 | |
|---|
| 1208 | delete posteriorPtr; |
|---|
| 1209 | |
|---|
| 1210 | if (enableVerbose) |
|---|
| 1211 | cerr << "done." << endl; |
|---|
| 1212 | } |
|---|
| 1213 | } |
|---|
| 1214 | |
|---|
| 1215 | return newSparseMatrices; |
|---|
| 1216 | } |
|---|
| 1217 | |
|---|
| 1218 | ///////////////////////////////////////////////////////////////// |
|---|
| 1219 | // Relax() |
|---|
| 1220 | // |
|---|
| 1221 | // Computes the consistency transformation for a single sequence |
|---|
| 1222 | // z, and adds the transformed matrix to "posterior". |
|---|
| 1223 | ///////////////////////////////////////////////////////////////// |
|---|
| 1224 | |
|---|
| 1225 | void Relax (SparseMatrix *matXZ, SparseMatrix *matZY, VF &posterior){ |
|---|
| 1226 | |
|---|
| 1227 | assert (matXZ); |
|---|
| 1228 | assert (matZY); |
|---|
| 1229 | |
|---|
| 1230 | int lengthX = matXZ->GetSeq1Length(); |
|---|
| 1231 | int lengthY = matZY->GetSeq2Length(); |
|---|
| 1232 | assert (matXZ->GetSeq2Length() == matZY->GetSeq1Length()); |
|---|
| 1233 | |
|---|
| 1234 | // for every x[i] |
|---|
| 1235 | for (int i = 1; i <= lengthX; i++){ |
|---|
| 1236 | SafeVector<PIF>::iterator XZptr = matXZ->GetRowPtr(i); |
|---|
| 1237 | SafeVector<PIF>::iterator XZend = XZptr + matXZ->GetRowSize(i); |
|---|
| 1238 | |
|---|
| 1239 | VF::iterator base = posterior.begin() + i * (lengthY + 1); |
|---|
| 1240 | |
|---|
| 1241 | // iterate through all x[i]-z[k] |
|---|
| 1242 | while (XZptr != XZend){ |
|---|
| 1243 | SafeVector<PIF>::iterator ZYptr = matZY->GetRowPtr(XZptr->first); |
|---|
| 1244 | SafeVector<PIF>::iterator ZYend = ZYptr + matZY->GetRowSize(XZptr->first); |
|---|
| 1245 | const float XZval = XZptr->second; |
|---|
| 1246 | |
|---|
| 1247 | // iterate through all z[k]-y[j] |
|---|
| 1248 | while (ZYptr != ZYend){ |
|---|
| 1249 | base[ZYptr->first] += XZval * ZYptr->second; |
|---|
| 1250 | ZYptr++; |
|---|
| 1251 | } |
|---|
| 1252 | XZptr++; |
|---|
| 1253 | } |
|---|
| 1254 | } |
|---|
| 1255 | } |
|---|
| 1256 | |
|---|
| 1257 | ///////////////////////////////////////////////////////////////// |
|---|
| 1258 | // Relax1() |
|---|
| 1259 | // |
|---|
| 1260 | // Computes the consistency transformation for a single sequence |
|---|
| 1261 | // z, and adds the transformed matrix to "posterior". |
|---|
| 1262 | ///////////////////////////////////////////////////////////////// |
|---|
| 1263 | |
|---|
| 1264 | void Relax1 (SparseMatrix *matZX, SparseMatrix *matZY, VF &posterior){ |
|---|
| 1265 | |
|---|
| 1266 | assert (matZX); |
|---|
| 1267 | assert (matZY); |
|---|
| 1268 | |
|---|
| 1269 | int lengthZ = matZX->GetSeq1Length(); |
|---|
| 1270 | int lengthY = matZY->GetSeq2Length(); |
|---|
| 1271 | |
|---|
| 1272 | // for every z[k] |
|---|
| 1273 | for (int k = 1; k <= lengthZ; k++){ |
|---|
| 1274 | SafeVector<PIF>::iterator ZXptr = matZX->GetRowPtr(k); |
|---|
| 1275 | SafeVector<PIF>::iterator ZXend = ZXptr + matZX->GetRowSize(k); |
|---|
| 1276 | |
|---|
| 1277 | // iterate through all z[k]-x[i] |
|---|
| 1278 | while (ZXptr != ZXend){ |
|---|
| 1279 | SafeVector<PIF>::iterator ZYptr = matZY->GetRowPtr(k); |
|---|
| 1280 | SafeVector<PIF>::iterator ZYend = ZYptr + matZY->GetRowSize(k); |
|---|
| 1281 | const float ZXval = ZXptr->second; |
|---|
| 1282 | VF::iterator base = posterior.begin() + ZXptr->first * (lengthY + 1); |
|---|
| 1283 | |
|---|
| 1284 | // iterate through all z[k]-y[j] |
|---|
| 1285 | while (ZYptr != ZYend){ |
|---|
| 1286 | base[ZYptr->first] += ZXval * ZYptr->second; |
|---|
| 1287 | ZYptr++; |
|---|
| 1288 | } |
|---|
| 1289 | ZXptr++; |
|---|
| 1290 | } |
|---|
| 1291 | } |
|---|
| 1292 | } |
|---|
| 1293 | |
|---|
| 1294 | ///////////////////////////////////////////////////////////////// |
|---|
| 1295 | // GetSubtree |
|---|
| 1296 | // |
|---|
| 1297 | // Returns set containing all leaf labels of the current subtree. |
|---|
| 1298 | ///////////////////////////////////////////////////////////////// |
|---|
| 1299 | |
|---|
| 1300 | set<int> GetSubtree (const TreeNode *tree){ |
|---|
| 1301 | set<int> s; |
|---|
| 1302 | |
|---|
| 1303 | if (tree->GetSequenceLabel() == -1){ |
|---|
| 1304 | s = GetSubtree (tree->GetLeftChild()); |
|---|
| 1305 | set<int> t = GetSubtree (tree->GetRightChild()); |
|---|
| 1306 | |
|---|
| 1307 | for (set<int>::iterator iter = t.begin(); iter != t.end(); ++iter) |
|---|
| 1308 | s.insert (*iter); |
|---|
| 1309 | } |
|---|
| 1310 | else { |
|---|
| 1311 | s.insert (tree->GetSequenceLabel()); |
|---|
| 1312 | } |
|---|
| 1313 | |
|---|
| 1314 | return s; |
|---|
| 1315 | } |
|---|
| 1316 | |
|---|
| 1317 | ///////////////////////////////////////////////////////////////// |
|---|
| 1318 | // TreeBasedBiPartitioning |
|---|
| 1319 | // |
|---|
| 1320 | // Uses the iterative refinement scheme from MUSCLE. |
|---|
| 1321 | ///////////////////////////////////////////////////////////////// |
|---|
| 1322 | |
|---|
| 1323 | void TreeBasedBiPartitioning (const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
|---|
| 1324 | const ProbabilisticModel &model, MultiSequence* &alignment, |
|---|
| 1325 | const TreeNode *tree){ |
|---|
| 1326 | // check if this is a node of the alignment tree |
|---|
| 1327 | if (tree->GetSequenceLabel() == -1){ |
|---|
| 1328 | TreeBasedBiPartitioning (sparseMatrices, model, alignment, tree->GetLeftChild()); |
|---|
| 1329 | TreeBasedBiPartitioning (sparseMatrices, model, alignment, tree->GetRightChild()); |
|---|
| 1330 | |
|---|
| 1331 | set<int> leftSubtree = GetSubtree (tree->GetLeftChild()); |
|---|
| 1332 | set<int> rightSubtree = GetSubtree (tree->GetRightChild()); |
|---|
| 1333 | set<int> leftSubtreeComplement, rightSubtreeComplement; |
|---|
| 1334 | |
|---|
| 1335 | // calculate complement of each subtree |
|---|
| 1336 | for (int i = 0; i < alignment->GetNumSequences(); i++){ |
|---|
| 1337 | if (leftSubtree.find(i) == leftSubtree.end()) leftSubtreeComplement.insert (i); |
|---|
| 1338 | if (rightSubtree.find(i) == rightSubtree.end()) rightSubtreeComplement.insert (i); |
|---|
| 1339 | } |
|---|
| 1340 | |
|---|
| 1341 | // perform realignments for edge to left child |
|---|
| 1342 | if (!leftSubtree.empty() && !leftSubtreeComplement.empty()){ |
|---|
| 1343 | MultiSequence *groupOneSeqs = alignment->Project (leftSubtree); assert (groupOneSeqs); |
|---|
| 1344 | MultiSequence *groupTwoSeqs = alignment->Project (leftSubtreeComplement); assert (groupTwoSeqs); |
|---|
| 1345 | delete alignment; |
|---|
| 1346 | alignment = AlignAlignments (groupOneSeqs, groupTwoSeqs, sparseMatrices, model); |
|---|
| 1347 | } |
|---|
| 1348 | |
|---|
| 1349 | // perform realignments for edge to right child |
|---|
| 1350 | if (!rightSubtree.empty() && !rightSubtreeComplement.empty()){ |
|---|
| 1351 | MultiSequence *groupOneSeqs = alignment->Project (rightSubtree); assert (groupOneSeqs); |
|---|
| 1352 | MultiSequence *groupTwoSeqs = alignment->Project (rightSubtreeComplement); assert (groupTwoSeqs); |
|---|
| 1353 | delete alignment; |
|---|
| 1354 | alignment = AlignAlignments (groupOneSeqs, groupTwoSeqs, sparseMatrices, model); |
|---|
| 1355 | } |
|---|
| 1356 | } |
|---|
| 1357 | } |
|---|
| 1358 | |
|---|
| 1359 | ///////////////////////////////////////////////////////////////// |
|---|
| 1360 | // DoIterativeRefinement() |
|---|
| 1361 | // |
|---|
| 1362 | // Performs a single round of randomized partionining iterative |
|---|
| 1363 | // refinement. |
|---|
| 1364 | ///////////////////////////////////////////////////////////////// |
|---|
| 1365 | |
|---|
| 1366 | void DoIterativeRefinement (const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
|---|
| 1367 | const ProbabilisticModel &model, MultiSequence* &alignment){ |
|---|
| 1368 | set<int> groupOne, groupTwo; |
|---|
| 1369 | |
|---|
| 1370 | // create two separate groups |
|---|
| 1371 | for (int i = 0; i < alignment->GetNumSequences(); i++){ |
|---|
| 1372 | if (rand() % 2) |
|---|
| 1373 | groupOne.insert (i); |
|---|
| 1374 | else |
|---|
| 1375 | groupTwo.insert (i); |
|---|
| 1376 | } |
|---|
| 1377 | |
|---|
| 1378 | if (groupOne.empty() || groupTwo.empty()) return; |
|---|
| 1379 | |
|---|
| 1380 | // project into the two groups |
|---|
| 1381 | MultiSequence *groupOneSeqs = alignment->Project (groupOne); assert (groupOneSeqs); |
|---|
| 1382 | MultiSequence *groupTwoSeqs = alignment->Project (groupTwo); assert (groupTwoSeqs); |
|---|
| 1383 | delete alignment; |
|---|
| 1384 | |
|---|
| 1385 | // realign |
|---|
| 1386 | alignment = AlignAlignments (groupOneSeqs, groupTwoSeqs, sparseMatrices, model); |
|---|
| 1387 | |
|---|
| 1388 | delete groupOneSeqs; |
|---|
| 1389 | delete groupTwoSeqs; |
|---|
| 1390 | } |
|---|
| 1391 | |
|---|
| 1392 | ///////////////////////////////////////////////////////////////// |
|---|
| 1393 | // WriteAnnotation() |
|---|
| 1394 | // |
|---|
| 1395 | // Computes annotation for multiple alignment and write values |
|---|
| 1396 | // to a file. |
|---|
| 1397 | ///////////////////////////////////////////////////////////////// |
|---|
| 1398 | |
|---|
| 1399 | void WriteAnnotation (MultiSequence *alignment, |
|---|
| 1400 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices){ |
|---|
| 1401 | ofstream outfile (annotationFilename.c_str()); |
|---|
| 1402 | |
|---|
| 1403 | if (outfile.fail()){ |
|---|
| 1404 | cerr << "ERROR: Unable to write annotation file." << endl; |
|---|
| 1405 | exit (1); |
|---|
| 1406 | } |
|---|
| 1407 | |
|---|
| 1408 | const int alignLength = alignment->GetSequence(0)->GetLength(); |
|---|
| 1409 | const int numSeqs = alignment->GetNumSequences(); |
|---|
| 1410 | |
|---|
| 1411 | SafeVector<int> position (numSeqs, 0); |
|---|
| 1412 | SafeVector<SafeVector<char>::iterator> seqs (numSeqs); |
|---|
| 1413 | for (int i = 0; i < numSeqs; i++) seqs[i] = alignment->GetSequence(i)->GetDataPtr(); |
|---|
| 1414 | SafeVector<pair<int,int> > active; |
|---|
| 1415 | active.reserve (numSeqs); |
|---|
| 1416 | |
|---|
| 1417 | SafeVector<int> lab; |
|---|
| 1418 | for (int i = 0; i < numSeqs; i++) lab.push_back(alignment->GetSequence(i)->GetSortLabel()); |
|---|
| 1419 | |
|---|
| 1420 | // for every column |
|---|
| 1421 | for (int i = 1; i <= alignLength; i++){ |
|---|
| 1422 | |
|---|
| 1423 | // find all aligned residues in this particular column |
|---|
| 1424 | active.clear(); |
|---|
| 1425 | for (int j = 0; j < numSeqs; j++){ |
|---|
| 1426 | if (seqs[j][i] != '-'){ |
|---|
| 1427 | active.push_back (make_pair(lab[j], ++position[j])); |
|---|
| 1428 | } |
|---|
| 1429 | } |
|---|
| 1430 | |
|---|
| 1431 | sort (active.begin(), active.end()); |
|---|
| 1432 | outfile << setw(4) << ComputeScore (active, sparseMatrices) << endl; |
|---|
| 1433 | } |
|---|
| 1434 | |
|---|
| 1435 | outfile.close(); |
|---|
| 1436 | } |
|---|
| 1437 | |
|---|
| 1438 | ///////////////////////////////////////////////////////////////// |
|---|
| 1439 | // ComputeScore() |
|---|
| 1440 | // |
|---|
| 1441 | // Computes the annotation score for a particular column. |
|---|
| 1442 | ///////////////////////////////////////////////////////////////// |
|---|
| 1443 | |
|---|
| 1444 | int ComputeScore (const SafeVector<pair<int, int> > &active, |
|---|
| 1445 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices){ |
|---|
| 1446 | |
|---|
| 1447 | if (active.size() <= 1) return 0; |
|---|
| 1448 | |
|---|
| 1449 | // ALTERNATIVE #1: Compute the average alignment score. |
|---|
| 1450 | |
|---|
| 1451 | float val = 0; |
|---|
| 1452 | for (int i = 0; i < (int) active.size(); i++){ |
|---|
| 1453 | for (int j = i+1; j < (int) active.size(); j++){ |
|---|
| 1454 | val += sparseMatrices[active[i].first][active[j].first]->GetValue(active[i].second, active[j].second); |
|---|
| 1455 | } |
|---|
| 1456 | } |
|---|
| 1457 | |
|---|
| 1458 | return (int) (200 * val / ((int) active.size() * ((int) active.size() - 1))); |
|---|
| 1459 | |
|---|
| 1460 | } |
|---|