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 { |
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400 | // let us know that we're done. |
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401 | if (enableVerbose) cerr << "done." << endl; |
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402 | } |
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403 | |
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404 | delete posterior; |
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405 | } |
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406 | |
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407 | delete forward; |
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408 | delete backward; |
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409 | } |
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410 | } |
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411 | } |
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412 | |
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413 | // now average out parameters derived |
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414 | if (enableTraining){ |
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415 | |
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416 | // compute new parameters |
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417 | for (int i = 0; i < (int) initDistrib.size(); i++) initDistrib[i] /= numSeqs * (numSeqs - 1) / 2; |
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418 | for (int i = 0; i < (int) gapOpen.size(); i++) gapOpen[i] /= numSeqs * (numSeqs - 1) / 2; |
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419 | for (int i = 0; i < (int) gapExtend.size(); i++) gapExtend[i] /= numSeqs * (numSeqs - 1) / 2; |
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420 | |
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421 | if (enableTrainEmissions){ |
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422 | for (int i = 0; i < (int) emitPairs.size(); i++) |
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423 | for (int j = 0; j < (int) emitPairs[i].size(); j++) emitPairs[i][j] /= numSeqs * (numSeqs - 1) / 2; |
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424 | for (int i = 0; i < (int) emitSingle.size(); i++) emitSingle[i] /= numSeqs * (numSeqs - 1) / 2; |
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425 | } |
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426 | } |
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427 | |
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428 | // see if we still want to do some alignments |
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429 | else { |
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430 | |
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431 | if (!enableViterbi){ |
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432 | |
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433 | // perform the consistency transformation the desired number of times |
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434 | for (int r = 0; r < numConsistencyReps; r++){ |
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435 | SafeVector<SafeVector<SparseMatrix *> > newSparseMatrices = DoRelaxation (sequences, sparseMatrices); |
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436 | |
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437 | // now replace the old posterior matrices |
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438 | for (int i = 0; i < numSeqs; i++){ |
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439 | for (int j = 0; j < numSeqs; j++){ |
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440 | delete sparseMatrices[i][j]; |
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441 | sparseMatrices[i][j] = newSparseMatrices[i][j]; |
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442 | } |
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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 | } |
---|