| 1 | ///////////////////////////////////////////////////////////////// |
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| 2 | // Main.cc |
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| 3 | ///////////////////////////////////////////////////////////////// |
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| 4 | |
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| 5 | #include "SafeVector.h" |
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| 6 | #include "MultiSequence.h" |
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| 7 | #include "Defaults.h" |
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| 8 | #include "ScoreType.h" |
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| 9 | #include "ProbabilisticModel.h" |
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| 10 | #include "EvolutionaryTree.h" |
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| 11 | #include "SparseMatrix.h" |
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| 12 | #include <string> |
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| 13 | #include <iomanip> |
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| 14 | #include <iostream> |
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| 15 | #include <list> |
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| 16 | #include <set> |
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| 17 | #include <algorithm> |
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| 18 | #include <cstdio> |
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| 19 | #include <cstdlib> |
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| 20 | #include <cerrno> |
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| 21 | #include <iomanip> |
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| 22 | |
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| 23 | string matrixFilename = ""; |
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| 24 | string parametersInputFilename = ""; |
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| 25 | string parametersOutputFilename = "no training"; |
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| 26 | |
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| 27 | bool enableTraining = false; |
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| 28 | bool enableVerbose = false; |
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| 29 | int numConsistencyReps = 2; |
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| 30 | int numPreTrainingReps = 0; |
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| 31 | int numIterativeRefinementReps = 100; |
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| 32 | |
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| 33 | float gapOpenPenalty = 0; |
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| 34 | float gapContinuePenalty = 0; |
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| 35 | VF initDistrib (NumMatrixTypes); |
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| 36 | VF gapOpen (2*NumInsertStates); |
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| 37 | VF gapExtend (2*NumInsertStates); |
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| 38 | SafeVector<char> alphabet; |
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| 39 | VVF emitPairs; |
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| 40 | VF emitSingle; |
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| 41 | |
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| 42 | const int MIN_PRETRAINING_REPS = 0; |
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| 43 | const int MAX_PRETRAINING_REPS = 20; |
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| 44 | const int MIN_CONSISTENCY_REPS = 0; |
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| 45 | const int MAX_CONSISTENCY_REPS = 5; |
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| 46 | const int MIN_ITERATIVE_REFINEMENT_REPS = 0; |
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| 47 | const int MAX_ITERATIVE_REFINEMENT_REPS = 1000; |
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| 48 | |
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| 49 | ///////////////////////////////////////////////////////////////// |
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| 50 | // Function prototypes |
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| 51 | ///////////////////////////////////////////////////////////////// |
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| 52 | |
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| 53 | void PrintHeading(); |
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| 54 | void PrintParameters (const char *message, const VF &initDistrib, const VF &gapOpen, |
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| 55 | const VF &gapExtend, const char *filename); |
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| 56 | MultiSequence *DoAlign (MultiSequence *sequence, const ProbabilisticModel &model); |
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| 57 | SafeVector<string> ParseParams (int argc, char **argv); |
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| 58 | void ReadParameters (); |
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| 59 | MultiSequence *ComputeFinalAlignment (const TreeNode *tree, MultiSequence *sequences, |
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| 60 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
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| 61 | const ProbabilisticModel &model); |
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| 62 | MultiSequence *AlignAlignments (MultiSequence *align1, MultiSequence *align2, |
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| 63 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
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| 64 | const ProbabilisticModel &model); |
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| 65 | void DoRelaxation (MultiSequence *sequences, SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices); |
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| 66 | void Relax (SparseMatrix *matXZ, SparseMatrix *matZY, VF &posterior); |
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| 67 | void DoIterativeRefinement (const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
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| 68 | const ProbabilisticModel &model, MultiSequence* &alignment); |
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| 69 | //float ScoreAlignment (MultiSequence *alignment, MultiSequence *sequences, SparseMatrix **sparseMatrices, const int numSeqs); |
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| 70 | |
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| 71 | ///////////////////////////////////////////////////////////////// |
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| 72 | // main() |
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| 73 | // |
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| 74 | // Calls all initialization routines and runs the PROBCONS |
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| 75 | // aligner. |
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| 76 | ///////////////////////////////////////////////////////////////// |
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| 77 | |
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| 78 | int main (int argc, char **argv){ |
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| 79 | |
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| 80 | if (argc != 3){ |
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| 81 | cerr << "Usage: FixRef inputfile reffile" << endl; |
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| 82 | exit (1); |
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| 83 | } |
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| 84 | |
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| 85 | string inputFilename = string (argv[1]); |
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| 86 | string refFilename = string (argv[2]); |
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| 87 | |
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| 88 | ReadParameters(); |
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| 89 | |
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| 90 | // build new model for aligning |
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| 91 | ProbabilisticModel model (initDistrib, gapOpen, gapExtend, |
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| 92 | alphabet, emitPairs, emitSingle); |
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| 93 | |
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| 94 | MultiSequence *inputSeq = new MultiSequence(); inputSeq->LoadMFA (inputFilename); |
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| 95 | MultiSequence *refSeq = new MultiSequence(); refSeq->LoadMFA (refFilename); |
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| 96 | |
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| 97 | SafeVector<char> *ali = new SafeVector<char>; |
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| 98 | |
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| 99 | if (refSeq->GetNumSequences() != 2){ |
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| 100 | cerr << "ERROR: Expected two sequences in reference alignment." << endl; |
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| 101 | exit (1); |
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| 102 | } |
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| 103 | set<int> s; s.insert (0); |
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| 104 | MultiSequence *ref1 = refSeq->Project (s); |
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| 105 | s.clear(); s.insert (1); |
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| 106 | MultiSequence *ref2 = refSeq->Project (s); |
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| 107 | |
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| 108 | for (int i = 0; i < inputSeq->GetNumSequences(); i++){ |
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| 109 | if (inputSeq->GetSequence(i)->GetHeader() == ref1->GetSequence(0)->GetHeader()){ |
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| 110 | ref1->AddSequence (inputSeq->GetSequence(i)->Clone()); |
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| 111 | } |
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| 112 | if (inputSeq->GetSequence(i)->GetHeader() == ref2->GetSequence(0)->GetHeader()) |
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| 113 | ref2->AddSequence (inputSeq->GetSequence(i)->Clone()); |
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| 114 | } |
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| 115 | if (ref1->GetNumSequences() != 2){ |
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| 116 | cerr << "ERROR: Expected two sequences in reference1 alignment." << endl; |
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| 117 | exit (1); |
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| 118 | } |
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| 119 | if (ref2->GetNumSequences() != 2){ |
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| 120 | cerr << "ERROR: Expected two sequences in reference2 alignment." << endl; |
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| 121 | exit (1); |
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| 122 | } |
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| 123 | |
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| 124 | ref1->GetSequence(0)->SetLabel(0); |
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| 125 | ref2->GetSequence(0)->SetLabel(0); |
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| 126 | ref1->GetSequence(1)->SetLabel(1); |
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| 127 | ref2->GetSequence(1)->SetLabel(1); |
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| 128 | |
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| 129 | // cerr << "Aligning..." << endl; |
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| 130 | |
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| 131 | // now, we can perform the alignments and write them out |
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| 132 | MultiSequence *alignment1 = DoAlign (ref1, |
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| 133 | ProbabilisticModel (initDistrib, gapOpen, gapExtend, |
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| 134 | alphabet, emitPairs, emitSingle)); |
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| 135 | |
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| 136 | //cerr << "Aligning second..." << endl; |
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| 137 | MultiSequence *alignment2 = DoAlign (ref2, |
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| 138 | ProbabilisticModel (initDistrib, gapOpen, gapExtend, |
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| 139 | alphabet, emitPairs, emitSingle)); |
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| 140 | |
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| 141 | SafeVector<char>::iterator iter1 = alignment1->GetSequence(0)->GetDataPtr(); |
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| 142 | SafeVector<char>::iterator iter2 = alignment1->GetSequence(1)->GetDataPtr(); |
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| 143 | for (int i = 1; i <= alignment1->GetSequence(0)->GetLength(); i++){ |
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| 144 | if (islower(iter1[i])) iter2[i] = tolower(iter2[i]); |
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| 145 | if (isupper(iter1[i])) iter2[i] = toupper(iter2[i]); |
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| 146 | } |
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| 147 | iter1 = alignment2->GetSequence(0)->GetDataPtr(); |
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| 148 | iter2 = alignment2->GetSequence(1)->GetDataPtr(); |
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| 149 | for (int i = 1; i <= alignment2->GetSequence(0)->GetLength(); i++){ |
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| 150 | if (islower(iter1[i])) iter2[i] = tolower(iter2[i]); |
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| 151 | if (isupper(iter1[i])) iter2[i] = toupper(iter2[i]); |
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| 152 | } |
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| 153 | //alignment1->WriteMFA (cout); |
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| 154 | //alignment2->WriteMFA (cout); |
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| 155 | |
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| 156 | int a1 = 0, a = 0; |
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| 157 | int b1 = 0, b = 0; |
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| 158 | |
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| 159 | for (int i = 1; i <= refSeq->GetSequence(0)->GetLength(); i++){ |
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| 160 | |
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| 161 | // catch up in filler sequences |
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| 162 | if (refSeq->GetSequence(0)->GetPosition(i) != '-'){ |
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| 163 | while (true){ |
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| 164 | a++; |
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| 165 | if (alignment1->GetSequence(0)->GetPosition(a) != '-') break; |
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| 166 | ali->push_back ('X'); |
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| 167 | } |
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| 168 | } |
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| 169 | if (refSeq->GetSequence(1)->GetPosition(i) != '-'){ |
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| 170 | while (true){ |
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| 171 | b++; |
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| 172 | if (alignment2->GetSequence(0)->GetPosition(b) != '-') break; |
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| 173 | ali->push_back ('Y'); |
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| 174 | } |
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| 175 | } |
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| 176 | |
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| 177 | if (refSeq->GetSequence(0)->GetPosition(i) != '-' && |
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| 178 | refSeq->GetSequence(1)->GetPosition(i) != '-'){ |
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| 179 | //cerr << "M: " << refSeq->GetSequence(0)->GetPosition(i) << refSeq->GetSequence(1)->GetPosition(i) << endl; |
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| 180 | ali->push_back ('B'); |
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| 181 | } |
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| 182 | else if (refSeq->GetSequence(0)->GetPosition(i) != '-'){ |
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| 183 | //cerr << "X" << endl; |
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| 184 | ali->push_back ('X'); |
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| 185 | } |
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| 186 | else if (refSeq->GetSequence(1)->GetPosition(i) != '-'){ |
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| 187 | //cerr << "Y" << endl; |
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| 188 | ali->push_back ('Y'); |
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| 189 | } |
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| 190 | } |
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| 191 | |
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| 192 | while (a < alignment1->GetSequence(0)->GetLength()){ |
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| 193 | a++; |
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| 194 | ali->push_back ('X'); |
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| 195 | if (alignment1->GetSequence(0)->GetPosition(a) != '-') a1++; |
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| 196 | } |
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| 197 | while (b < alignment2->GetSequence(0)->GetLength()){ |
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| 198 | b++; |
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| 199 | ali->push_back ('Y'); |
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| 200 | if (alignment2->GetSequence(0)->GetPosition(b) != '-') b1++; |
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| 201 | } |
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| 202 | |
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| 203 | Sequence *seq1 = alignment1->GetSequence(1)->AddGaps (ali, 'X'); |
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| 204 | Sequence *seq2 = alignment2->GetSequence(1)->AddGaps (ali, 'Y'); |
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| 205 | seq1->WriteMFA (cout, 60); |
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| 206 | seq2->WriteMFA (cout, 60); |
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| 207 | |
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| 208 | delete seq1; |
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| 209 | delete seq2; |
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| 210 | |
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| 211 | delete ali; |
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| 212 | delete alignment1; |
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| 213 | delete alignment2; |
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| 214 | delete inputSeq; |
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| 215 | delete refSeq; |
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| 216 | } |
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| 217 | |
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| 218 | ///////////////////////////////////////////////////////////////// |
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| 219 | // PrintHeading() |
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| 220 | // |
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| 221 | // Prints heading for PROBCONS program. |
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| 222 | ///////////////////////////////////////////////////////////////// |
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| 223 | |
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| 224 | void PrintHeading (){ |
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| 225 | cerr << endl |
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| 226 | << "PROBCONS version 1.02 - align multiple protein sequences and print to standard output" << endl |
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| 227 | << "Copyright (C) 2004 Chuong Ba Do" << endl |
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| 228 | << endl; |
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| 229 | } |
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| 230 | |
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| 231 | ///////////////////////////////////////////////////////////////// |
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| 232 | // PrintParameters() |
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| 233 | // |
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| 234 | // Prints PROBCONS parameters to STDERR. If a filename is |
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| 235 | // specified, then the parameters are also written to the file. |
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| 236 | ///////////////////////////////////////////////////////////////// |
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| 237 | |
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| 238 | void PrintParameters (const char *message, const VF &initDistrib, const VF &gapOpen, |
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| 239 | const VF &gapExtend, const char *filename){ |
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| 240 | |
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| 241 | // print parameters to the screen |
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| 242 | cerr << message << endl |
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| 243 | << " initDistrib[] = { "; |
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| 244 | for (int i = 0; i < NumMatrixTypes; i++) cerr << setprecision (10) << initDistrib[i] << " "; |
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| 245 | cerr << "}" << endl |
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| 246 | << " gapOpen[] = { "; |
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| 247 | for (int i = 0; i < NumInsertStates*2; i++) cerr << setprecision (10) << gapOpen[i] << " "; |
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| 248 | cerr << "}" << endl |
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| 249 | << " gapExtend[] = { "; |
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| 250 | for (int i = 0; i < NumInsertStates*2; i++) cerr << setprecision (10) << gapExtend[i] << " "; |
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| 251 | cerr << "}" << endl |
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| 252 | << endl; |
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| 253 | |
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| 254 | // if a file name is specified |
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| 255 | if (filename){ |
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| 256 | |
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| 257 | // attempt to open the file for writing |
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| 258 | FILE *file = fopen (filename, "w"); |
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| 259 | if (!file){ |
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| 260 | cerr << "ERROR: Unable to write parameter file: " << filename << endl; |
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| 261 | exit (1); |
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| 262 | } |
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| 263 | |
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| 264 | // if successful, then write the parameters to the file |
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| 265 | for (int i = 0; i < NumMatrixTypes; i++) fprintf (file, "%.10f ", initDistrib[i]); fprintf (file, "\n"); |
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| 266 | for (int i = 0; i < 2*NumInsertStates; i++) fprintf (file, "%.10f ", gapOpen[i]); fprintf (file, "\n"); |
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| 267 | for (int i = 0; i < 2*NumInsertStates; i++) fprintf (file, "%.10f ", gapExtend[i]); fprintf (file, "\n"); |
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| 268 | fclose (file); |
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| 269 | } |
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| 270 | } |
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| 271 | |
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| 272 | ///////////////////////////////////////////////////////////////// |
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| 273 | // DoAlign() |
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| 274 | // |
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| 275 | // First computes all pairwise posterior probability matrices. |
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| 276 | // Then, computes new parameters if training, or a final |
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| 277 | // alignment, otherwise. |
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| 278 | ///////////////////////////////////////////////////////////////// |
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| 279 | |
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| 280 | MultiSequence *DoAlign (MultiSequence *sequences, const ProbabilisticModel &model){ |
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| 281 | |
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| 282 | assert (sequences); |
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| 283 | |
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| 284 | const int numSeqs = sequences->GetNumSequences(); |
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| 285 | VVF distances (numSeqs, VF (numSeqs, 0)); |
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| 286 | SafeVector<SafeVector<SparseMatrix *> > sparseMatrices (numSeqs, SafeVector<SparseMatrix *>(numSeqs, NULL)); |
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| 287 | |
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| 288 | // do all pairwise alignments |
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| 289 | for (int a = 0; a < numSeqs-1; a++){ |
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| 290 | for (int b = a+1; b < numSeqs; b++){ |
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| 291 | Sequence *seq1 = sequences->GetSequence (a); |
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| 292 | Sequence *seq2 = sequences->GetSequence (b); |
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| 293 | |
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| 294 | // verbose output |
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| 295 | if (enableVerbose) |
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| 296 | cerr << "(" << a+1 << ") " << seq1->GetHeader() << " vs. " |
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| 297 | << "(" << b+1 << ") " << seq2->GetHeader() << ": "; |
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| 298 | |
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| 299 | // compute forward and backward probabilities |
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| 300 | VF *forward = model.ComputeForwardMatrix (seq1, seq2); assert (forward); |
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| 301 | VF *backward = model.ComputeBackwardMatrix (seq1, seq2); assert (backward); |
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| 302 | |
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| 303 | // if we are training, then we'll simply want to compute the |
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| 304 | // expected counts for each region within the matrix separately; |
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| 305 | // otherwise, we'll need to put all of the regions together and |
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| 306 | // assemble a posterior probability match matrix |
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| 307 | |
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| 308 | // compute posterior probability matrix |
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| 309 | VF *posterior = model.ComputePosteriorMatrix (seq1, seq2, *forward, *backward); assert (posterior); |
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| 310 | |
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| 311 | // compute "expected accuracy" distance for evolutionary tree computation |
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| 312 | pair<SafeVector<char> *, float> alignment = model.ComputeAlignment (seq1->GetLength(), |
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| 313 | seq2->GetLength(), |
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| 314 | *posterior); |
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| 315 | |
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| 316 | float distance = alignment.second / min (seq1->GetLength(), seq2->GetLength()); |
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| 317 | |
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| 318 | if (enableVerbose) |
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| 319 | cerr << setprecision (10) << distance << endl; |
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| 320 | |
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| 321 | // save posterior probability matrices in sparse format |
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| 322 | distances[a][b] = distances[b][a] = distance; |
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| 323 | sparseMatrices[a][b] = new SparseMatrix (seq1->GetLength(), seq2->GetLength(), *posterior); |
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| 324 | sparseMatrices[b][a] = sparseMatrices[a][b]->ComputeTranspose(); |
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| 325 | |
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| 326 | delete alignment.first; |
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| 327 | delete posterior; |
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| 328 | |
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| 329 | delete forward; |
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| 330 | delete backward; |
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| 331 | } |
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| 332 | } |
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| 333 | |
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| 334 | if (!enableTraining){ |
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| 335 | if (enableVerbose) |
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| 336 | cerr << endl; |
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| 337 | |
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| 338 | // now, perform the consistency transformation the desired number of times |
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| 339 | for (int i = 0; i < numConsistencyReps; i++) |
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| 340 | DoRelaxation (sequences, sparseMatrices); |
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| 341 | |
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| 342 | // compute the evolutionary tree |
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| 343 | TreeNode *tree = TreeNode::ComputeTree (distances); |
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| 344 | |
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| 345 | //tree->Print (cerr, sequences); |
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| 346 | //cerr << endl; |
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| 347 | |
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| 348 | // make the final alignment |
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| 349 | MultiSequence *alignment = ComputeFinalAlignment (tree, sequences, sparseMatrices, model); |
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| 350 | delete tree; |
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| 351 | |
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| 352 | return alignment; |
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| 353 | } |
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| 354 | |
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| 355 | return NULL; |
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| 356 | } |
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| 357 | |
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| 358 | ///////////////////////////////////////////////////////////////// |
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| 359 | // GetInteger() |
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| 360 | // |
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| 361 | // Attempts to parse an integer from the character string given. |
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| 362 | // Returns true only if no parsing error occurs. |
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| 363 | ///////////////////////////////////////////////////////////////// |
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| 364 | |
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| 365 | bool GetInteger (char *data, int *val){ |
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| 366 | char *endPtr; |
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| 367 | long int retVal; |
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| 368 | |
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| 369 | assert (val); |
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| 370 | |
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| 371 | errno = 0; |
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| 372 | retVal = strtol (data, &endPtr, 0); |
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| 373 | if (retVal == 0 && (errno != 0 || data == endPtr)) return false; |
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| 374 | if (errno != 0 && (retVal == LONG_MAX || retVal == LONG_MIN)) return false; |
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| 375 | if (retVal < (long) INT_MIN || retVal > (long) INT_MAX) return false; |
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| 376 | *val = (int) retVal; |
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| 377 | return true; |
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| 378 | } |
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| 379 | |
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| 380 | ///////////////////////////////////////////////////////////////// |
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| 381 | // GetFloat() |
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| 382 | // |
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| 383 | // Attempts to parse a float from the character string given. |
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| 384 | // Returns true only if no parsing error occurs. |
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| 385 | ///////////////////////////////////////////////////////////////// |
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| 386 | |
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| 387 | bool GetFloat (char *data, float *val){ |
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| 388 | char *endPtr; |
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| 389 | double retVal; |
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| 390 | |
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| 391 | assert (val); |
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| 392 | |
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| 393 | errno = 0; |
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| 394 | retVal = strtod (data, &endPtr); |
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| 395 | if (retVal == 0 && (errno != 0 || data == endPtr)) return false; |
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| 396 | if (errno != 0 && (retVal >= 1000000.0 || retVal <= -1000000.0)) return false; |
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| 397 | *val = (float) retVal; |
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| 398 | return true; |
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| 399 | } |
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| 400 | |
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| 401 | ///////////////////////////////////////////////////////////////// |
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| 402 | // ParseParams() |
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| 403 | // |
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| 404 | // Parse all command-line options. |
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| 405 | ///////////////////////////////////////////////////////////////// |
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| 406 | |
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| 407 | SafeVector<string> ParseParams (int argc, char **argv){ |
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| 408 | |
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| 409 | if (argc < 2){ |
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| 410 | |
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| 411 | cerr << "PROBCONS comes with ABSOLUTELY NO WARRANTY. This is free software, and" << endl |
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| 412 | << "you are welcome to redistribute it under certain conditions. See the" << endl |
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| 413 | << "file COPYING.txt for details." << endl |
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| 414 | << endl |
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| 415 | << "Usage:" << endl |
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| 416 | << " probcons [OPTION]... [MFAFILE]..." << endl |
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| 417 | << endl |
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| 418 | << "Description:" << endl |
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| 419 | << " Align sequences in MFAFILE(s) and print result to standard output" << endl |
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| 420 | << endl |
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| 421 | << " -t, --train FILENAME" << endl |
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| 422 | << " compute EM transition probabilities, store in FILENAME (default: " |
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| 423 | << parametersOutputFilename << ")" << endl |
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| 424 | << endl |
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| 425 | << " -m, --matrixfile FILENAME" << endl |
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| 426 | << " read transition parameters from FILENAME (default: " |
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| 427 | << matrixFilename << ")" << endl |
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| 428 | << endl |
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| 429 | << " -p, --paramfile FILENAME" << endl |
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| 430 | << " read scoring matrix probabilities from FILENAME (default: " |
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| 431 | << parametersInputFilename << ")" << endl |
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| 432 | << endl |
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| 433 | << " -c, --consistency REPS" << endl |
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| 434 | << " use " << MIN_CONSISTENCY_REPS << " <= REPS <= " << MAX_CONSISTENCY_REPS |
|---|
| 435 | << " (default: " << numConsistencyReps << ") passes of consistency transformation" << endl |
|---|
| 436 | << endl |
|---|
| 437 | << " -ir, --iterative-refinement REPS" << endl |
|---|
| 438 | << " use " << MIN_ITERATIVE_REFINEMENT_REPS << " <= REPS <= " << MAX_ITERATIVE_REFINEMENT_REPS |
|---|
| 439 | << " (default: " << numIterativeRefinementReps << ") passes of iterative-refinement" << endl |
|---|
| 440 | << endl |
|---|
| 441 | << " -pre, --pre-training REPS" << endl |
|---|
| 442 | << " use " << MIN_PRETRAINING_REPS << " <= REPS <= " << MAX_PRETRAINING_REPS |
|---|
| 443 | << " (default: " << numPreTrainingReps << ") rounds of pretraining" << endl |
|---|
| 444 | << endl |
|---|
| 445 | << " -go, --gap-open VALUE" << endl |
|---|
| 446 | << " gap opening penalty of VALUE <= 0 (default: " << gapOpenPenalty << ")" << endl |
|---|
| 447 | << endl |
|---|
| 448 | << " -ge, --gap-extension VALUE" << endl |
|---|
| 449 | << " gap extension penalty of VALUE <= 0 (default: " << gapContinuePenalty << ")" << endl |
|---|
| 450 | << endl |
|---|
| 451 | << " -v, --verbose" << endl |
|---|
| 452 | << " report progress while aligning (default: " << (enableVerbose ? "on" : "off") << ")" << endl |
|---|
| 453 | << endl; |
|---|
| 454 | |
|---|
| 455 | exit (1); |
|---|
| 456 | } |
|---|
| 457 | |
|---|
| 458 | SafeVector<string> sequenceNames; |
|---|
| 459 | int tempInt; |
|---|
| 460 | float tempFloat; |
|---|
| 461 | |
|---|
| 462 | for (int i = 1; i < argc; i++){ |
|---|
| 463 | if (argv[i][0] == '-'){ |
|---|
| 464 | |
|---|
| 465 | // training |
|---|
| 466 | if (!strcmp (argv[i], "-t") || !strcmp (argv[i], "--train")){ |
|---|
| 467 | enableTraining = true; |
|---|
| 468 | if (i < argc - 1) |
|---|
| 469 | parametersOutputFilename = string (argv[++i]); |
|---|
| 470 | else { |
|---|
| 471 | cerr << "ERROR: Filename expected for option " << argv[i] << endl; |
|---|
| 472 | exit (1); |
|---|
| 473 | } |
|---|
| 474 | } |
|---|
| 475 | |
|---|
| 476 | // scoring matrix file |
|---|
| 477 | else if (!strcmp (argv[i], "-m") || !strcmp (argv[i], "--matrixfile")){ |
|---|
| 478 | if (i < argc - 1) |
|---|
| 479 | matrixFilename = string (argv[++i]); |
|---|
| 480 | else { |
|---|
| 481 | cerr << "ERROR: Filename expected for option " << argv[i] << endl; |
|---|
| 482 | exit (1); |
|---|
| 483 | } |
|---|
| 484 | } |
|---|
| 485 | |
|---|
| 486 | // transition/initial distribution parameter file |
|---|
| 487 | else if (!strcmp (argv[i], "-p") || !strcmp (argv[i], "--paramfile")){ |
|---|
| 488 | if (i < argc - 1) |
|---|
| 489 | parametersInputFilename = string (argv[++i]); |
|---|
| 490 | else { |
|---|
| 491 | cerr << "ERROR: Filename expected for option " << argv[i] << endl; |
|---|
| 492 | exit (1); |
|---|
| 493 | } |
|---|
| 494 | } |
|---|
| 495 | |
|---|
| 496 | // number of consistency transformations |
|---|
| 497 | else if (!strcmp (argv[i], "-c") || !strcmp (argv[i], "--consistency")){ |
|---|
| 498 | if (i < argc - 1){ |
|---|
| 499 | if (!GetInteger (argv[++i], &tempInt)){ |
|---|
| 500 | cerr << "ERROR: Invalid integer following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 501 | exit (1); |
|---|
| 502 | } |
|---|
| 503 | else { |
|---|
| 504 | if (tempInt < MIN_CONSISTENCY_REPS || tempInt > MAX_CONSISTENCY_REPS){ |
|---|
| 505 | cerr << "ERROR: For option " << argv[i-1] << ", integer must be between " |
|---|
| 506 | << MIN_CONSISTENCY_REPS << " and " << MAX_CONSISTENCY_REPS << "." << endl; |
|---|
| 507 | exit (1); |
|---|
| 508 | } |
|---|
| 509 | else |
|---|
| 510 | numConsistencyReps = tempInt; |
|---|
| 511 | } |
|---|
| 512 | } |
|---|
| 513 | else { |
|---|
| 514 | cerr << "ERROR: Integer expected for option " << argv[i] << endl; |
|---|
| 515 | exit (1); |
|---|
| 516 | } |
|---|
| 517 | } |
|---|
| 518 | |
|---|
| 519 | // number of randomized partitioning iterative refinement passes |
|---|
| 520 | else if (!strcmp (argv[i], "-ir") || !strcmp (argv[i], "--iterative-refinement")){ |
|---|
| 521 | if (i < argc - 1){ |
|---|
| 522 | if (!GetInteger (argv[++i], &tempInt)){ |
|---|
| 523 | cerr << "ERROR: Invalid integer following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 524 | exit (1); |
|---|
| 525 | } |
|---|
| 526 | else { |
|---|
| 527 | if (tempInt < MIN_ITERATIVE_REFINEMENT_REPS || tempInt > MAX_ITERATIVE_REFINEMENT_REPS){ |
|---|
| 528 | cerr << "ERROR: For option " << argv[i-1] << ", integer must be between " |
|---|
| 529 | << MIN_ITERATIVE_REFINEMENT_REPS << " and " << MAX_ITERATIVE_REFINEMENT_REPS << "." << endl; |
|---|
| 530 | exit (1); |
|---|
| 531 | } |
|---|
| 532 | else |
|---|
| 533 | numIterativeRefinementReps = tempInt; |
|---|
| 534 | } |
|---|
| 535 | } |
|---|
| 536 | else { |
|---|
| 537 | cerr << "ERROR: Integer expected for option " << argv[i] << endl; |
|---|
| 538 | exit (1); |
|---|
| 539 | } |
|---|
| 540 | } |
|---|
| 541 | |
|---|
| 542 | // number of EM pre-training rounds |
|---|
| 543 | else if (!strcmp (argv[i], "-pre") || !strcmp (argv[i], "--pre-training")){ |
|---|
| 544 | if (i < argc - 1){ |
|---|
| 545 | if (!GetInteger (argv[++i], &tempInt)){ |
|---|
| 546 | cerr << "ERROR: Invalid integer following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 547 | exit (1); |
|---|
| 548 | } |
|---|
| 549 | else { |
|---|
| 550 | if (tempInt < MIN_PRETRAINING_REPS || tempInt > MAX_PRETRAINING_REPS){ |
|---|
| 551 | cerr << "ERROR: For option " << argv[i-1] << ", integer must be between " |
|---|
| 552 | << MIN_PRETRAINING_REPS << " and " << MAX_PRETRAINING_REPS << "." << endl; |
|---|
| 553 | exit (1); |
|---|
| 554 | } |
|---|
| 555 | else |
|---|
| 556 | numPreTrainingReps = tempInt; |
|---|
| 557 | } |
|---|
| 558 | } |
|---|
| 559 | else { |
|---|
| 560 | cerr << "ERROR: Integer expected for option " << argv[i] << endl; |
|---|
| 561 | exit (1); |
|---|
| 562 | } |
|---|
| 563 | } |
|---|
| 564 | |
|---|
| 565 | // gap open penalty |
|---|
| 566 | else if (!strcmp (argv[i], "-go") || !strcmp (argv[i], "--gap-open")){ |
|---|
| 567 | if (i < argc - 1){ |
|---|
| 568 | if (!GetFloat (argv[++i], &tempFloat)){ |
|---|
| 569 | cerr << "ERROR: Invalid floating-point value following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 570 | exit (1); |
|---|
| 571 | } |
|---|
| 572 | else { |
|---|
| 573 | if (tempFloat > 0){ |
|---|
| 574 | cerr << "ERROR: For option " << argv[i-1] << ", floating-point value must not be positive." << endl; |
|---|
| 575 | exit (1); |
|---|
| 576 | } |
|---|
| 577 | else |
|---|
| 578 | gapOpenPenalty = tempFloat; |
|---|
| 579 | } |
|---|
| 580 | } |
|---|
| 581 | else { |
|---|
| 582 | cerr << "ERROR: Floating-point value expected for option " << argv[i] << endl; |
|---|
| 583 | exit (1); |
|---|
| 584 | } |
|---|
| 585 | } |
|---|
| 586 | |
|---|
| 587 | // gap extension penalty |
|---|
| 588 | else if (!strcmp (argv[i], "-ge") || !strcmp (argv[i], "--gap-extension")){ |
|---|
| 589 | if (i < argc - 1){ |
|---|
| 590 | if (!GetFloat (argv[++i], &tempFloat)){ |
|---|
| 591 | cerr << "ERROR: Invalid floating-point value following option " << argv[i-1] << ": " << argv[i] << endl; |
|---|
| 592 | exit (1); |
|---|
| 593 | } |
|---|
| 594 | else { |
|---|
| 595 | if (tempFloat > 0){ |
|---|
| 596 | cerr << "ERROR: For option " << argv[i-1] << ", floating-point value must not be positive." << endl; |
|---|
| 597 | exit (1); |
|---|
| 598 | } |
|---|
| 599 | else |
|---|
| 600 | gapContinuePenalty = tempFloat; |
|---|
| 601 | } |
|---|
| 602 | } |
|---|
| 603 | else { |
|---|
| 604 | cerr << "ERROR: Floating-point value expected for option " << argv[i] << endl; |
|---|
| 605 | exit (1); |
|---|
| 606 | } |
|---|
| 607 | } |
|---|
| 608 | |
|---|
| 609 | // verbose reporting |
|---|
| 610 | else if (!strcmp (argv[i], "-v") || !strcmp (argv[i], "--verbose")){ |
|---|
| 611 | enableVerbose = true; |
|---|
| 612 | } |
|---|
| 613 | |
|---|
| 614 | // bad arguments |
|---|
| 615 | else { |
|---|
| 616 | cerr << "ERROR: Unrecognized option: " << argv[i] << endl; |
|---|
| 617 | exit (1); |
|---|
| 618 | } |
|---|
| 619 | } |
|---|
| 620 | else { |
|---|
| 621 | sequenceNames.push_back (string (argv[i])); |
|---|
| 622 | } |
|---|
| 623 | } |
|---|
| 624 | |
|---|
| 625 | return sequenceNames; |
|---|
| 626 | } |
|---|
| 627 | |
|---|
| 628 | ///////////////////////////////////////////////////////////////// |
|---|
| 629 | // ReadParameters() |
|---|
| 630 | // |
|---|
| 631 | // Read initial distribution, transition, and emission |
|---|
| 632 | // parameters from a file. |
|---|
| 633 | ///////////////////////////////////////////////////////////////// |
|---|
| 634 | |
|---|
| 635 | void ReadParameters (){ |
|---|
| 636 | |
|---|
| 637 | ifstream data; |
|---|
| 638 | |
|---|
| 639 | // read initial state distribution and transition parameters |
|---|
| 640 | if (parametersInputFilename == string ("")){ |
|---|
| 641 | if (NumInsertStates == 1){ |
|---|
| 642 | for (int i = 0; i < NumMatrixTypes; i++) initDistrib[i] = initDistrib1Default[i]; |
|---|
| 643 | for (int i = 0; i < 2*NumInsertStates; i++) gapOpen[i] = gapOpen1Default[i]; |
|---|
| 644 | for (int i = 0; i < 2*NumInsertStates; i++) gapExtend[i] = gapExtend1Default[i]; |
|---|
| 645 | } |
|---|
| 646 | else if (NumInsertStates == 2){ |
|---|
| 647 | for (int i = 0; i < NumMatrixTypes; i++) initDistrib[i] = initDistrib2Default[i]; |
|---|
| 648 | for (int i = 0; i < 2*NumInsertStates; i++) gapOpen[i] = gapOpen2Default[i]; |
|---|
| 649 | for (int i = 0; i < 2*NumInsertStates; i++) gapExtend[i] = gapExtend2Default[i]; |
|---|
| 650 | } |
|---|
| 651 | else { |
|---|
| 652 | cerr << "ERROR: No default initial distribution/parameter settings exist" << endl |
|---|
| 653 | << " for " << NumInsertStates << " pairs of insert states. Use --paramfile." << endl; |
|---|
| 654 | exit (1); |
|---|
| 655 | } |
|---|
| 656 | } |
|---|
| 657 | else { |
|---|
| 658 | data.open (parametersInputFilename.c_str()); |
|---|
| 659 | if (data.fail()){ |
|---|
| 660 | cerr << "ERROR: Unable to read parameter file: " << parametersInputFilename << endl; |
|---|
| 661 | exit (1); |
|---|
| 662 | } |
|---|
| 663 | for (int i = 0; i < NumMatrixTypes; i++) data >> initDistrib[i]; |
|---|
| 664 | for (int i = 0; i < 2*NumInsertStates; i++) data >> gapOpen[i]; |
|---|
| 665 | for (int i = 0; i < 2*NumInsertStates; i++) data >> gapExtend[i]; |
|---|
| 666 | data.close(); |
|---|
| 667 | } |
|---|
| 668 | |
|---|
| 669 | // read emission parameters |
|---|
| 670 | int alphabetSize = 20; |
|---|
| 671 | |
|---|
| 672 | // allocate memory |
|---|
| 673 | alphabet = SafeVector<char>(alphabetSize); |
|---|
| 674 | emitPairs = VVF (alphabetSize, VF (alphabetSize, 0)); |
|---|
| 675 | emitSingle = VF (alphabetSize); |
|---|
| 676 | |
|---|
| 677 | if (matrixFilename == string ("")){ |
|---|
| 678 | for (int i = 0; i < alphabetSize; i++) alphabet[i] = alphabetDefault[i]; |
|---|
| 679 | for (int i = 0; i < alphabetSize; i++){ |
|---|
| 680 | emitSingle[i] = emitSingleDefault[i]; |
|---|
| 681 | for (int j = 0; j <= i; j++){ |
|---|
| 682 | emitPairs[i][j] = emitPairs[j][i] = (i == j); |
|---|
| 683 | } |
|---|
| 684 | } |
|---|
| 685 | } |
|---|
| 686 | else { |
|---|
| 687 | data.open (matrixFilename.c_str()); |
|---|
| 688 | if (data.fail()){ |
|---|
| 689 | cerr << "ERROR: Unable to read scoring matrix file: " << matrixFilename << endl; |
|---|
| 690 | exit (1); |
|---|
| 691 | } |
|---|
| 692 | |
|---|
| 693 | for (int i = 0; i < alphabetSize; i++) data >> alphabet[i]; |
|---|
| 694 | for (int i = 0; i < alphabetSize; i++){ |
|---|
| 695 | for (int j = 0; j <= i; j++){ |
|---|
| 696 | data >> emitPairs[i][j]; |
|---|
| 697 | emitPairs[j][i] = emitPairs[i][j]; |
|---|
| 698 | } |
|---|
| 699 | } |
|---|
| 700 | for (int i = 0; i < alphabetSize; i++){ |
|---|
| 701 | char ch; |
|---|
| 702 | data >> ch; |
|---|
| 703 | assert (ch == alphabet[i]); |
|---|
| 704 | } |
|---|
| 705 | for (int i = 0; i < alphabetSize; i++) data >> emitSingle[i]; |
|---|
| 706 | data.close(); |
|---|
| 707 | } |
|---|
| 708 | } |
|---|
| 709 | |
|---|
| 710 | ///////////////////////////////////////////////////////////////// |
|---|
| 711 | // ProcessTree() |
|---|
| 712 | // |
|---|
| 713 | // Process the tree recursively. Returns the aligned sequences |
|---|
| 714 | // corresponding to a node or leaf of the tree. |
|---|
| 715 | ///////////////////////////////////////////////////////////////// |
|---|
| 716 | |
|---|
| 717 | MultiSequence *ProcessTree (const TreeNode *tree, MultiSequence *sequences, |
|---|
| 718 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
|---|
| 719 | const ProbabilisticModel &model){ |
|---|
| 720 | MultiSequence *result; |
|---|
| 721 | |
|---|
| 722 | // check if this is a node of the alignment tree |
|---|
| 723 | if (tree->GetSequenceLabel() == -1){ |
|---|
| 724 | MultiSequence *alignLeft = ProcessTree (tree->GetLeftChild(), sequences, sparseMatrices, model); |
|---|
| 725 | MultiSequence *alignRight = ProcessTree (tree->GetRightChild(), sequences, sparseMatrices, model); |
|---|
| 726 | |
|---|
| 727 | assert (alignLeft); |
|---|
| 728 | assert (alignRight); |
|---|
| 729 | |
|---|
| 730 | result = AlignAlignments (alignLeft, alignRight, sparseMatrices, model); |
|---|
| 731 | assert (result); |
|---|
| 732 | |
|---|
| 733 | delete alignLeft; |
|---|
| 734 | delete alignRight; |
|---|
| 735 | } |
|---|
| 736 | |
|---|
| 737 | // otherwise, this is a leaf of the alignment tree |
|---|
| 738 | else { |
|---|
| 739 | result = new MultiSequence(); assert (result); |
|---|
| 740 | result->AddSequence (sequences->GetSequence(tree->GetSequenceLabel())->Clone()); |
|---|
| 741 | } |
|---|
| 742 | |
|---|
| 743 | return result; |
|---|
| 744 | } |
|---|
| 745 | |
|---|
| 746 | ///////////////////////////////////////////////////////////////// |
|---|
| 747 | // ComputeFinalAlignment() |
|---|
| 748 | // |
|---|
| 749 | // Compute the final alignment by calling ProcessTree(), then |
|---|
| 750 | // performing iterative refinement as needed. |
|---|
| 751 | ///////////////////////////////////////////////////////////////// |
|---|
| 752 | |
|---|
| 753 | MultiSequence *ComputeFinalAlignment (const TreeNode *tree, MultiSequence *sequences, |
|---|
| 754 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
|---|
| 755 | const ProbabilisticModel &model){ |
|---|
| 756 | |
|---|
| 757 | MultiSequence *alignment = ProcessTree (tree, sequences, sparseMatrices, model); |
|---|
| 758 | |
|---|
| 759 | // iterative refinement |
|---|
| 760 | for (int i = 0; i < numIterativeRefinementReps; i++) |
|---|
| 761 | DoIterativeRefinement (sparseMatrices, model, alignment); |
|---|
| 762 | |
|---|
| 763 | cerr << endl; |
|---|
| 764 | |
|---|
| 765 | // return final alignment |
|---|
| 766 | return alignment; |
|---|
| 767 | } |
|---|
| 768 | |
|---|
| 769 | ///////////////////////////////////////////////////////////////// |
|---|
| 770 | // AlignAlignments() |
|---|
| 771 | // |
|---|
| 772 | // Returns the alignment of two MultiSequence objects. |
|---|
| 773 | ///////////////////////////////////////////////////////////////// |
|---|
| 774 | |
|---|
| 775 | MultiSequence *AlignAlignments (MultiSequence *align1, MultiSequence *align2, |
|---|
| 776 | const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
|---|
| 777 | const ProbabilisticModel &model){ |
|---|
| 778 | |
|---|
| 779 | // print some info about the alignment |
|---|
| 780 | if (enableVerbose){ |
|---|
| 781 | for (int i = 0; i < align1->GetNumSequences(); i++) |
|---|
| 782 | cerr << ((i==0) ? "[" : ",") << align1->GetSequence(i)->GetLabel(); |
|---|
| 783 | cerr << "] vs. "; |
|---|
| 784 | for (int i = 0; i < align2->GetNumSequences(); i++) |
|---|
| 785 | cerr << ((i==0) ? "[" : ",") << align2->GetSequence(i)->GetLabel(); |
|---|
| 786 | cerr << "]: "; |
|---|
| 787 | } |
|---|
| 788 | |
|---|
| 789 | VF *posterior = model.BuildPosterior (align1, align2, sparseMatrices); |
|---|
| 790 | pair<SafeVector<char> *, float> alignment; |
|---|
| 791 | |
|---|
| 792 | // choose the alignment routine depending on the "cosmetic" gap penalties used |
|---|
| 793 | if (gapOpenPenalty == 0 && gapContinuePenalty == 0) |
|---|
| 794 | alignment = model.ComputeAlignment (align1->GetSequence(0)->GetLength(), align2->GetSequence(0)->GetLength(), *posterior); |
|---|
| 795 | else |
|---|
| 796 | alignment = model.ComputeAlignmentWithGapPenalties (align1, align2, |
|---|
| 797 | *posterior, align1->GetNumSequences(), align2->GetNumSequences(), |
|---|
| 798 | gapOpenPenalty, gapContinuePenalty); |
|---|
| 799 | |
|---|
| 800 | delete posterior; |
|---|
| 801 | |
|---|
| 802 | if (enableVerbose){ |
|---|
| 803 | |
|---|
| 804 | // compute total length of sequences |
|---|
| 805 | int totLength = 0; |
|---|
| 806 | for (int i = 0; i < align1->GetNumSequences(); i++) |
|---|
| 807 | for (int j = 0; j < align2->GetNumSequences(); j++) |
|---|
| 808 | totLength += min (align1->GetSequence(i)->GetLength(), align2->GetSequence(j)->GetLength()); |
|---|
| 809 | |
|---|
| 810 | // give an "accuracy" measure for the alignment |
|---|
| 811 | cerr << alignment.second / totLength << endl; |
|---|
| 812 | } |
|---|
| 813 | |
|---|
| 814 | // now build final alignment |
|---|
| 815 | MultiSequence *result = new MultiSequence(); |
|---|
| 816 | for (int i = 0; i < align1->GetNumSequences(); i++) |
|---|
| 817 | result->AddSequence (align1->GetSequence(i)->AddGaps(alignment.first, 'X')); |
|---|
| 818 | for (int i = 0; i < align2->GetNumSequences(); i++) |
|---|
| 819 | result->AddSequence (align2->GetSequence(i)->AddGaps(alignment.first, 'Y')); |
|---|
| 820 | result->SortByLabel(); |
|---|
| 821 | |
|---|
| 822 | // free temporary alignment |
|---|
| 823 | delete alignment.first; |
|---|
| 824 | |
|---|
| 825 | return result; |
|---|
| 826 | } |
|---|
| 827 | |
|---|
| 828 | ///////////////////////////////////////////////////////////////// |
|---|
| 829 | // DoRelaxation() |
|---|
| 830 | // |
|---|
| 831 | // Performs one round of the consistency transformation. The |
|---|
| 832 | // formula used is: |
|---|
| 833 | // 1 |
|---|
| 834 | // P'(x[i]-y[j]) = --- sum sum P(x[i]-z[k]) P(z[k]-y[j]) |
|---|
| 835 | // |S| z in S k |
|---|
| 836 | // |
|---|
| 837 | // where S = {x, y, all other sequences...} |
|---|
| 838 | // |
|---|
| 839 | ///////////////////////////////////////////////////////////////// |
|---|
| 840 | |
|---|
| 841 | void DoRelaxation (MultiSequence *sequences, SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices){ |
|---|
| 842 | const int numSeqs = sequences->GetNumSequences(); |
|---|
| 843 | |
|---|
| 844 | SafeVector<SafeVector<SparseMatrix *> > newSparseMatrices (numSeqs, SafeVector<SparseMatrix *>(numSeqs, NULL)); |
|---|
| 845 | |
|---|
| 846 | // for every pair of sequences |
|---|
| 847 | for (int i = 0; i < numSeqs; i++){ |
|---|
| 848 | for (int j = i+1; j < numSeqs; j++){ |
|---|
| 849 | Sequence *seq1 = sequences->GetSequence (i); |
|---|
| 850 | Sequence *seq2 = sequences->GetSequence (j); |
|---|
| 851 | |
|---|
| 852 | if (enableVerbose) |
|---|
| 853 | cerr << "Relaxing (" << i+1 << ") " << seq1->GetHeader() << " vs. " |
|---|
| 854 | << "(" << j+1 << ") " << seq2->GetHeader() << ": "; |
|---|
| 855 | |
|---|
| 856 | // get the original posterior matrix |
|---|
| 857 | VF *posteriorPtr = sparseMatrices[i][j]->GetPosterior(); assert (posteriorPtr); |
|---|
| 858 | VF &posterior = *posteriorPtr; |
|---|
| 859 | |
|---|
| 860 | const int seq1Length = seq1->GetLength(); |
|---|
| 861 | const int seq2Length = seq2->GetLength(); |
|---|
| 862 | |
|---|
| 863 | // contribution from the summation where z = x and z = y |
|---|
| 864 | for (int k = 0; k < (seq1Length+1) * (seq2Length+1); k++) posterior[k] += posterior[k]; |
|---|
| 865 | |
|---|
| 866 | if (enableVerbose) |
|---|
| 867 | cerr << sparseMatrices[i][j]->GetNumCells() << " --> "; |
|---|
| 868 | |
|---|
| 869 | // contribution from all other sequences |
|---|
| 870 | for (int k = 0; k < numSeqs; k++) if (k != i && k != j){ |
|---|
| 871 | Relax (sparseMatrices[i][k], sparseMatrices[k][j], posterior); |
|---|
| 872 | } |
|---|
| 873 | |
|---|
| 874 | // now renormalization |
|---|
| 875 | for (int k = 0; k < (seq1Length+1) * (seq2Length+1); k++) posterior[k] /= numSeqs; |
|---|
| 876 | |
|---|
| 877 | // save the new posterior matrix |
|---|
| 878 | newSparseMatrices[i][j] = new SparseMatrix (seq1->GetLength(), seq2->GetLength(), posterior); |
|---|
| 879 | newSparseMatrices[j][i] = newSparseMatrices[i][j]->ComputeTranspose(); |
|---|
| 880 | |
|---|
| 881 | if (enableVerbose) |
|---|
| 882 | cerr << newSparseMatrices[i][j]->GetNumCells() << " -- "; |
|---|
| 883 | |
|---|
| 884 | delete posteriorPtr; |
|---|
| 885 | |
|---|
| 886 | if (enableVerbose) |
|---|
| 887 | cerr << "done." << endl; |
|---|
| 888 | } |
|---|
| 889 | } |
|---|
| 890 | |
|---|
| 891 | // now replace the old posterior matrices |
|---|
| 892 | for (int i = 0; i < numSeqs; i++){ |
|---|
| 893 | for (int j = 0; j < numSeqs; j++){ |
|---|
| 894 | delete sparseMatrices[i][j]; |
|---|
| 895 | sparseMatrices[i][j] = newSparseMatrices[i][j]; |
|---|
| 896 | } |
|---|
| 897 | } |
|---|
| 898 | } |
|---|
| 899 | |
|---|
| 900 | ///////////////////////////////////////////////////////////////// |
|---|
| 901 | // DoRelaxation() |
|---|
| 902 | // |
|---|
| 903 | // Computes the consistency transformation for a single sequence |
|---|
| 904 | // z, and adds the transformed matrix to "posterior". |
|---|
| 905 | ///////////////////////////////////////////////////////////////// |
|---|
| 906 | |
|---|
| 907 | void Relax (SparseMatrix *matXZ, SparseMatrix *matZY, VF &posterior){ |
|---|
| 908 | |
|---|
| 909 | assert (matXZ); |
|---|
| 910 | assert (matZY); |
|---|
| 911 | |
|---|
| 912 | int lengthX = matXZ->GetSeq1Length(); |
|---|
| 913 | int lengthY = matZY->GetSeq2Length(); |
|---|
| 914 | assert (matXZ->GetSeq2Length() == matZY->GetSeq1Length()); |
|---|
| 915 | |
|---|
| 916 | // for every x[i] |
|---|
| 917 | for (int i = 1; i <= lengthX; i++){ |
|---|
| 918 | SafeVector<PIF>::iterator XZptr = matXZ->GetRowPtr(i); |
|---|
| 919 | SafeVector<PIF>::iterator XZend = XZptr + matXZ->GetRowSize(i); |
|---|
| 920 | |
|---|
| 921 | VF::iterator base = posterior.begin() + i * (lengthY + 1); |
|---|
| 922 | |
|---|
| 923 | // iterate through all x[i]-z[k] |
|---|
| 924 | while (XZptr != XZend){ |
|---|
| 925 | SafeVector<PIF>::iterator ZYptr = matZY->GetRowPtr(XZptr->first); |
|---|
| 926 | SafeVector<PIF>::iterator ZYend = ZYptr + matZY->GetRowSize(XZptr->first); |
|---|
| 927 | const float XZval = XZptr->second; |
|---|
| 928 | |
|---|
| 929 | // iterate through all z[k]-y[j] |
|---|
| 930 | while (ZYptr != ZYend){ |
|---|
| 931 | base[ZYptr->first] += XZval * ZYptr->second;; |
|---|
| 932 | ZYptr++; |
|---|
| 933 | } |
|---|
| 934 | XZptr++; |
|---|
| 935 | } |
|---|
| 936 | } |
|---|
| 937 | } |
|---|
| 938 | |
|---|
| 939 | ///////////////////////////////////////////////////////////////// |
|---|
| 940 | // DoIterativeRefinement() |
|---|
| 941 | // |
|---|
| 942 | // Performs a single round of randomized partionining iterative |
|---|
| 943 | // refinement. |
|---|
| 944 | ///////////////////////////////////////////////////////////////// |
|---|
| 945 | |
|---|
| 946 | void DoIterativeRefinement (const SafeVector<SafeVector<SparseMatrix *> > &sparseMatrices, |
|---|
| 947 | const ProbabilisticModel &model, MultiSequence* &alignment){ |
|---|
| 948 | set<int> groupOne, groupTwo; |
|---|
| 949 | |
|---|
| 950 | // create two separate groups |
|---|
| 951 | for (int i = 0; i < alignment->GetNumSequences(); i++){ |
|---|
| 952 | if (random() % 2) |
|---|
| 953 | groupOne.insert (i); |
|---|
| 954 | else |
|---|
| 955 | groupTwo.insert (i); |
|---|
| 956 | } |
|---|
| 957 | |
|---|
| 958 | if (groupOne.empty() || groupTwo.empty()) return; |
|---|
| 959 | |
|---|
| 960 | // project into the two groups |
|---|
| 961 | MultiSequence *groupOneSeqs = alignment->Project (groupOne); assert (groupOneSeqs); |
|---|
| 962 | MultiSequence *groupTwoSeqs = alignment->Project (groupTwo); assert (groupTwoSeqs); |
|---|
| 963 | delete alignment; |
|---|
| 964 | |
|---|
| 965 | // realign |
|---|
| 966 | alignment = AlignAlignments (groupOneSeqs, groupTwoSeqs, sparseMatrices, model); |
|---|
| 967 | } |
|---|
| 968 | |
|---|
| 969 | /* |
|---|
| 970 | float ScoreAlignment (MultiSequence *alignment, MultiSequence *sequences, SparseMatrix **sparseMatrices, const int numSeqs){ |
|---|
| 971 | int totLength = 0; |
|---|
| 972 | float score = 0; |
|---|
| 973 | |
|---|
| 974 | for (int a = 0; a < alignment->GetNumSequences(); a++){ |
|---|
| 975 | for (int b = a+1; b < alignment->GetNumSequences(); b++){ |
|---|
| 976 | Sequence *seq1 = alignment->GetSequence(a); |
|---|
| 977 | Sequence *seq2 = alignment->GetSequence(b); |
|---|
| 978 | |
|---|
| 979 | const int seq1Length = sequences->GetSequence(seq1->GetLabel())->GetLength(); |
|---|
| 980 | const int seq2Length = sequences->GetSequence(seq2->GetLabel())->GetLength(); |
|---|
| 981 | |
|---|
| 982 | totLength += min (seq1Length, seq2Length); |
|---|
| 983 | |
|---|
| 984 | int pos1 = 0, pos2 = 0; |
|---|
| 985 | for (int i = 1; i <= seq1->GetLength(); i++){ |
|---|
| 986 | char ch1 = seq1->GetPosition(i); |
|---|
| 987 | char ch2 = seq2->GetPosition(i); |
|---|
| 988 | |
|---|
| 989 | if (ch1 != '-') pos1++; |
|---|
| 990 | if (ch2 != '-') pos2++; |
|---|
| 991 | if (ch1 != '-' && ch2 != '-'){ |
|---|
| 992 | score += sparseMatrices[a * numSeqs + b]->GetValue (pos1, pos2); |
|---|
| 993 | } |
|---|
| 994 | } |
|---|
| 995 | } |
|---|
| 996 | } |
|---|
| 997 | |
|---|
| 998 | return score / totLength; |
|---|
| 999 | } |
|---|
| 1000 | */ |
|---|