-
Notifications
You must be signed in to change notification settings - Fork 3
/
guidedbootstrap.cpp
1210 lines (1101 loc) · 45.7 KB
/
guidedbootstrap.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/***************************************************************************
* Copyright (C) 2009 by BUI Quang Minh *
* minh.bui@univie.ac.at *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <numeric>
#include "phylotree.h"
#include "phylosupertree.h"
#include "phyloanalysis.h"
#include "alignment.h"
#include "superalignment.h"
#include "iqtree.h"
#include "gtrmodel.h"
#include "modeldna.h"
#include "myreader.h"
#include "rateheterogeneity.h"
#include "rategamma.h"
#include "rateinvar.h"
#include "rategammainvar.h"
//#include "modeltest_wrapper.h"
#include "modelprotein.h"
#include "stoprule.h"
#include "mtreeset.h"
#include "mexttree.h"
#include "ratemeyerhaeseler.h"
#include "whtest_wrapper.h"
#include "partitionmodel.h"
//#include "zpipe.h"
#include "gzstream.h"
#include "guidedbootstrap.h"
#include "timeutil.h"
void readPatternLogLL(Alignment* aln, char *fileName, vector<double*> &logLLs, DoubleVector &trees_logl)
{
//First read the values from inFile to a DoubleVector
//int siteNum;
string currentString;
cout << "\nReading file containing site's loglikelihood: " << fileName << "...." << endl;
ifstream inFile;
int i;
try {
inFile.exceptions (ios::failbit | ios::badbit);
inFile.open(fileName);
/**really start reading*/
//read number of sites
getline(inFile,currentString);
//siteNum = convert_int(currentString.c_str());
//ignore "Site_Lh"
inFile.exceptions (ios::badbit);
while (!inFile.eof())
{
DoubleVector _logllVec;
if ( !(inFile >> currentString) ) break;
//reading each line of the file
//remove the badbit
//set the failbit again
double logl = 0.0;
for (i = 0; i < aln->getNSite(); i++) {
double ll;
if (!(inFile >> ll)) throw "Wrong logLL entry";
_logllVec.push_back(ll);
logl += ll;
}
double *logLL = new double[aln->getNPattern()];
memset(logLL, 0, sizeof(double) * aln->getNPattern());
//logLL.resize(aln->getNPattern(),0.0);
for (i = 0; i < _logllVec.size(); i++)
{
int patIndex = aln->getPatternID(i);
if ( logLL[patIndex] == 0 )
logLL[patIndex] = _logllVec[i];
else
if ( logLL[patIndex] != _logllVec[i] )
outError("Conflicting between the likelihoods reported for pattern", aln->at(i));
}
logLLs.push_back(logLL);
trees_logl.push_back(logl);
}/**finish reading*/
inFile.clear();
inFile.exceptions (ios::failbit | ios::badbit);
inFile.close();
} catch (bad_alloc) {
outError(ERR_NO_MEMORY);
} catch (const char *str) {
outError(str);
} catch (char *str) {
outError(str);
} catch (string str) {
outError(str);
} catch (ios::failure) {
outError(ERR_READ_INPUT);
} catch (...) {
outError(ERR_READ_ANY);
}
}
void computeExpectedNorFre(Alignment *aln, double *logLL, IntVector &expectedNorFre)
{
//IntVector expectedNorFre;
/* if ( logLL.empty())
outError("Error: log likelihood of patterns are not given!");
*/
int patNum = aln->getNPattern();
int alignLen = aln->getNSite();
//resize the expectedNorFre vector
expectedNorFre.resize(patNum,-1);
//Vector containing the likelihood of the pattern p_i
DoubleVector LL(patNum,-1.0);
double sumLL = 0; //sum of the likelihood of the patterns in the alignment
//Compute the likelihood from the logLL
for ( int i = 0; i < patNum; i++ )
{
LL[i] = exp(logLL[i]);
sumLL += LL[i];
}
//Vector containing l_i = p_i*ell/sum_i(p_i)
DoubleVector ell(patNum, -1.0);
//Compute l_i
for ( int i = 0; i < patNum; i++ )
{
ell[i] = (double)alignLen * LL[i] / sumLL;
}
//Vector containing r_i where r_0 = ell_0; r_{i+1} = ell_{i+1} + r_i - ordinaryRounding(r_i)
DoubleVector r(patNum, -1.0);
//Compute r_i and the expected normalized frequencies
r[0] = ell[0];
expectedNorFre[0] = (int)floor(ell[0]+0.5); //note that floor(_number+0.5) returns the ordinary rounding of _number
int sum = expectedNorFre[0];
for (int j = 1; j < patNum; j++ )
{
r[j] = ell[j] + r[j-1] - floor(r[j-1]+0.5);
expectedNorFre[j] = (int)floor(r[j]+0.5);
sum += expectedNorFre[j];
}
//cout << "Number of patterns: " << patNum << ", sum of expected sites: " << sum << endl;
//return expectedNorFre;
}
void computeTreeWeights(DoubleVector &reProb, IntVector &reW) {
int nDiff = reProb.size();
reW.resize(nDiff,-1);
DoubleVector ratio(nDiff,-1.0);
double sumRatio = 0;
int i;
double max_prob = reProb[0];
for ( i = 0; i < nDiff; i++ )
if (reProb[i] > max_prob) max_prob = reProb[i];
for ( i = 0; i < nDiff; i++ )
{
ratio[i] = exp(reProb[i]-max_prob);
sumRatio += ratio[i];
}
for ( i = 0; i < nDiff; i++ )
{
double temp = (ratio[i]/sumRatio)*1000000;
reW[i] = (int) floor(temp+0.5);
}
}
double euclideanDist(IntVector &vec1, IntVector &vec2) {
if (vec1.size() != vec2.size()) outError("Different vector size ", __func__);
double dist = 0.0;
for (int i = 0; i < vec1.size(); i++)
dist += (vec1[i]-vec2[i])*(vec1[i]-vec2[i]);
return sqrt(dist);
}
inline double computeRELL(double *pattern_lh, IntVector &pattern_freq) {
double lh = 0.0;
int npat = pattern_freq.size();
//if (npat != pattern_freq.size()) outError("Wrong vector size ", __func__);
for (int i = 0; i < npat; i++) lh += pattern_freq[i] * pattern_lh[i];
return lh;
}
/**
computing Expected Likelihood Weights (ELW) of trees by Strimmer & Rambaut (2002)
*/
void computeExpectedLhWeights(Alignment *aln, vector<double*> &pattern_lhs,
IntVector &treeids, int num_replicates, DoubleVector &elw,
const char* spec, DoubleVector *sh_pval = NULL) {
cout << "Computing Expected Likelihood Weights (ELW) with " << num_replicates << " replicates ..." << endl;
int i, j, ntrees = treeids.size();
elw.resize(treeids.size(), 0.0);
vector<DoubleVector> all_logl;
// general RELL logl
for (i = 0; i < num_replicates; i++) {
IntVector pattern_freq;
aln->createBootstrapAlignment(pattern_freq, spec);
DoubleVector logl;
logl.resize(treeids.size(), 0.0);
j = 0;
for (IntVector::iterator it = treeids.begin(); it != treeids.end(); it++, j++) {
logl[j] = computeRELL(pattern_lhs[*it], pattern_freq);
}
if (sh_pval) all_logl.push_back(logl);
double max_logl = logl[0];
for (j = 0; j < logl.size(); j++)
if (max_logl < logl[j]) max_logl = logl[j];
double sum = 0.0;
for (j = 0; j < logl.size(); j++) {
logl[j] = exp(logl[j] - max_logl);
sum += logl[j];
}
for (j = 0; j < logl.size(); j++)
elw[j] += (logl[j]/sum);
}
// normalize ELW weights to sum of 1
for (j = 0; j < elw.size(); j++)
elw[j] /= num_replicates;
if (!sh_pval) return;
// centering step in SH test
DoubleVector mean_logl;
mean_logl.resize(ntrees, 0);
for (i = 0; i < num_replicates; i++)
for (j = 0; j < ntrees; j++) {
mean_logl[j] += all_logl[i][j];
}
for (j = 0; j < ntrees; j++)
mean_logl[j] /= num_replicates;
for (i = 0; i < num_replicates; i++)
for (j = 0; j < ntrees; j++) {
all_logl[i][j] -= mean_logl[j];
}
// computing delta
for (i = 0; i < num_replicates; i++) {
double max_logl = *max_element(all_logl[i].begin(), all_logl[i].end());
for (j = 0; j < ntrees; j++) all_logl[i][j] = max_logl - all_logl[i][j];
}
// computing original delta
DoubleVector orig_logl;
orig_logl.resize(ntrees, 0);
for (j = 0; j < ntrees; j++) {
int tree_id = treeids[j];
i = 0;
for (Alignment::iterator it = aln->begin(); it != aln->end(); it++, i++)
orig_logl[j] += pattern_lhs[tree_id][i] * it->frequency;
}
double max_logl = *max_element(orig_logl.begin(), orig_logl.end());
for (j = 0; j < ntrees; j++) orig_logl[j] = max_logl - orig_logl[j];
sh_pval->resize(ntrees, 0);
for (i = 0; i < num_replicates; i++)
for (j = 0; j < ntrees; j++) {
if (orig_logl[j] < all_logl[i][j]) (*sh_pval)[j] += 1.0;
}
for (j = 0; j < ntrees; j++)
(*sh_pval)[j] /= num_replicates;
}
void printTrees(const char *ofile, IQTree &tree, IntVector *weights, bool compression)
{
int count = 0;
try {
ostream *out;
if (compression) out = new ogzstream;
else out = new ofstream;
out->exceptions(ios::failbit | ios::badbit);
if (compression)
((ogzstream*)out)->open(ofile);
else
((ofstream*)out)->open(ofile);
(*out) << "[ scale=" << tree.len_scale << " ]" << endl;
for (StringIntMap::iterator it = tree.treels.begin(); it != tree.treels.end(); it++)
if (!weights || weights->at(it->second)) {
int id = it->second;
out->precision(10);
(*out) << "[ lh=" << tree.treels_logl[id];
if (weights) (*out) << " w=" << weights->at(id);
(*out) << " ] ";
(*out) << tree.treels_newick[id] << endl;
count++;
}
cout << count << " tree(s) printed to " << ofile << endl;
if (compression) {
z_off_t uncompress = ((ogzstream*)out)->get_raw_bytes();
((ogzstream*)out)->close();
struct stat st;
stat(ofile, &st);
cout << "Compression ratio: " << ((double)st.st_size/uncompress)
<< " (" << uncompress << " -> " << st.st_size << " bytes)" << endl;
}
else
((ofstream*)out)->close();
delete out;
} catch (ios::failure) {
outError(ERR_WRITE_OUTPUT, ofile);
}
}
void printPatternLh(const char *ofile, IQTree *tree, bool compression) {
int count = 0, i;
int scale = 1000;
try {
ostream *out;
if (compression) out = new ogzstream;
else out = new ofstream;
out->exceptions(ios::failbit | ios::badbit);
if (compression)
((ogzstream*)out)->open(ofile/*, ios::out | ios::binary*/);
else
((ofstream*)out)->open(ofile/*, ios::out | ios::binary*/);
int idfirst = tree->treels.begin()->second;
(*out) << tree->treels.size() << " " << tree->aln->getNSite() <<
" " << tree->aln->getNPattern() << " " << scale << endl;
for (i = 0; i < tree->aln->getNSite(); i++)
(*out) << " " << tree->aln->getPatternID(i);
(*out) << endl;
// DO NOT CHANGE
for (StringIntMap::iterator it = tree->treels.begin(); it != tree->treels.end(); it++)
{
int id = it->second;
assert(id < tree->treels_ptnlh.size());
//out->write((char*)tree->treels_ptnlh[id], sizeof(double)*tree->aln->size());
out->precision(10);
(*out) << -tree->treels_logl[id];
if (id == idfirst) {
out->precision(6);
for (int i = 0; i < tree->aln->size(); i++)
(*out) << " " << -tree->treels_ptnlh[id][i];
} else {
for (int i = 0; i < tree->aln->size(); i++) {
int diff = round((tree->treels_ptnlh[id][i]-tree->treels_ptnlh[idfirst][i])*scale);
(*out) << " " << diff;
}
}
(*out) << endl;
count++;
}
if (compression)
((ogzstream*)out)->close();
else
((ofstream*)out)->close();
delete out;
cout << count << " pattern log-likelihood vector(s) printed to " << ofile << endl;
} catch (ios::failure) {
outError(ERR_WRITE_OUTPUT, ofile);
}
}
void readPatternLh(const char *infile, IQTree *tree, bool compression) {
int count = 0, i;
int ntrees, nsite, nptn, scale;
double max_tol = 0.0;
try {
istream *in;
if (compression) in = new igzstream;
else in = new ifstream;
in->exceptions(ios::failbit | ios::badbit);
if (compression)
((igzstream*)in)->open(infile/*, ios::out | ios::binary*/);
else
((ifstream*)in)->open(infile/*, ios::out | ios::binary*/);
(*in) >> ntrees >> nsite >> nptn >> scale;
if (nsite != tree->aln->getNSite()) outError("Number of sites does not match");
if (nptn != tree->aln->getNPattern()) outError("Number of patterns does not match");
for (i = 0; i < nsite; i++) {
int id;
(*in) >> id;
if (id != tree->aln->getPatternID(i)) outError("Pattern ID does not match");
}
tree->treels_logl.resize(ntrees, 0.0);
tree->treels_ptnlh.resize(ntrees, NULL);
for (int id = 0; id < ntrees; id++)
{
double logl;
(*in) >> logl;
logl = -logl;
tree->treels_logl[id] = logl;
double *pattern_lh = new double[nptn];
if (id == 0) {
for (i = 0; i < nptn; i++) {
(*in) >> pattern_lh[i];
pattern_lh[i] = -pattern_lh[i];
}
} else {
double sum = 0.0;
for (i = 0; i < nptn; i++) {
int diff;
(*in) >> diff;
pattern_lh[i] = tree->treels_ptnlh[0][i]+(double)diff/scale;
sum += pattern_lh[i] * tree->aln->at(i).frequency;
}
max_tol = max(max_tol, fabs(sum-logl));
}
tree->treels_ptnlh[id] = pattern_lh;
count++;
}
cout << "max tolerance = " << max_tol << endl;
if (compression)
((igzstream*)in)->close();
else
((ifstream*)in)->close();
delete in;
cout << count << " pattern log-likelihood vector(s) read from " << infile << endl;
} catch (ios::failure) {
outError(ERR_READ_INPUT, infile);
}
}
void computeAllPatternLh(Params ¶ms, IQTree &tree) {
/* this part copied from phyloanalysis.cpp */
tree.optimize_by_newton = params.optimize_by_newton;
tree.sse = params.SSE;
try {
if (!tree.getModelFactory()) {
if (tree.isSuperTree())
tree.setModelFactory(new PartitionModel(params, (PhyloSuperTree*)&tree));
else
tree.setModelFactory(new ModelFactory(params, &tree));
}
} catch (string str) {
outError(str);
}
tree.setModel(tree.getModelFactory()->model);
tree.setRate(tree.getModelFactory()->site_rate);
tree.setStartLambda(params.lambda);
if (tree.isSuperTree()) ((PhyloSuperTree*)&tree)->mapTrees();
int model_df = tree.getModel()->getNDim() + tree.getRate()->getNDim();
cout << endl;
cout << "Estimating model parameters for: " << tree.getModelName() << " (" << model_df << " free parameters)" << endl;
cout << "Fixed branch lengths: " << ((params.fixed_branch_length) ? "Yes" : "No") << endl;
/* optimize model parameters */
cout << endl;
cout << "Optimizing model parameters" << endl;
double bestTreeScore = tree.getModelFactory()->optimizeParameters(params.fixed_branch_length, true, TOL_LIKELIHOOD);
cout << "Log-likelihood of the current tree: " << bestTreeScore << endl;
//Update tree score
tree.curScore = bestTreeScore;
if (tree.isSuperTree()) ((PhyloSuperTree*)&tree)->computeBranchLengths();
stringstream best_tree_string;
tree.printTree(best_tree_string, WT_TAXON_ID + WT_BR_LEN);
cout << "Computing pattern log-likelihoods for trees in " << params.user_file << " ..." << endl;
/* now compute the treels_ptnlh */
try {
istream *in;
if (params.do_compression) in = new igzstream;
else in = new ifstream;
in->exceptions(ios::failbit | ios::badbit);
if (params.do_compression)
((igzstream*)in)->open(params.user_file);
else
((ifstream*)in)->open(params.user_file);
double max_logl_diff = 0.0;
char ch;
(*in) >> ch;
if (ch == '[') {
string str;
(*in) >> str;
if (str.substr(0,6) == "scale=") {
tree.len_scale = convert_double(str.substr(6).c_str());
}
do {
(*in) >> ch;
} while (!in->eof() && ch != ']');
} else in->unget();
cout << "Applying branch length scaling: " << tree.len_scale << endl;
while (!in->eof()) {
in->exceptions(ios::goodbit);
(*in) >> ch;
if (in->eof()) break;
in->exceptions(ios::failbit | ios::badbit);
double expected_lh = 0.0;
if (ch == '[') {
string str;
(*in) >> str;
if (str.substr(0,3) == "lh=") {
expected_lh = convert_double(str.substr(3).c_str());
}
do {
(*in) >> ch;
} while (!in->eof() && ch != ']');
} else in->unget();
tree.freeNode();
tree.readTree(*in, tree.rooted);
tree.scaleLength(1.0/tree.len_scale); // scale the branch length
tree.assignLeafNames();
tree.initializeAllPartialLh();
tree.clearAllPartialLH();
if (tree.isSuperTree()) ((PhyloSuperTree*)&tree)->mapTrees();
double *pattern_lh = new double [tree.aln->getNPattern()];
if (!params.fixed_branch_length) {
tree.curScore = tree.optimizeAllBranches();
tree.computePatternLikelihood(pattern_lh);
} else {
tree.curScore = tree.computeLikelihood(pattern_lh);
}
if (expected_lh != 0.0)
max_logl_diff = max(max_logl_diff, fabs(tree.curScore-expected_lh));
tree.treels_ptnlh.push_back(pattern_lh);
tree.treels_logl.push_back(tree.curScore);
cout << "Tree " << tree.treels_logl.size() << ": " << tree.curScore << endl;
if (tree.treels_ptnlh.size() % 500 == 0)
cout << tree.treels_ptnlh.size() << " trees evaluated" << endl;
}
cout << tree.treels_ptnlh.size() << " trees evaluated in total" << endl;
cout << "Maximal log-likelihood error is " << max_logl_diff << endl << endl;
if (params.do_compression) ((igzstream*)in)->close();
else ((ifstream*)in)->close();
delete in;
} catch (ios::failure) {
outError(ERR_READ_INPUT, params.user_file);
}
/* take back the current best tree */
best_tree_string.seekg(0, ios::beg);
tree.freeNode();
tree.readTree(best_tree_string, tree.rooted);
tree.assignLeafNames();
tree.initializeAllPartialLh();
tree.clearAllPartialLH();
}
void readTrees(Params ¶ms, Alignment *alignment, IQTree &tree) {
if (!params.user_file) {
outError("You have to specify user tree file");
}
if (!params.second_tree) {
outError("Please provide target tree file via -sup option");
}
// read tree file
cout << "Reading tree file " << params.second_tree << endl;
tree.readTree(params.second_tree, params.is_rooted);
// reindex the taxa in the tree to aphabetical names
NodeVector taxa;
tree.getTaxa(taxa);
sort(taxa.begin(), taxa.end(), nodenamecmp);
int i = 0;
for (NodeVector::iterator it = taxa.begin(); it != taxa.end(); it++) {
(*it)->id = i++;
}
// read in corresponding site-log-likelihood for all trees
/*trees_logl = new DoubleVector;
pattern_lhs = new vector<double*>;
readPatternLogLL(alignment, params.siteLL_file, *pattern_lhs, *trees_logl);*/
if (params.siteLL_file) {
// read pattern loglikelihoods from file
readPatternLh(params.siteLL_file, &tree, params.do_compression);
} else {
// compute all pattern log-likelihoods
tree.setAlignment(alignment);
computeAllPatternLh(params, tree);
}
}
void runGuidedBootstrapReal(Params ¶ms, Alignment *alignment, IQTree &tree) {
int i, j;
double begin_time = getCPUTime();
MTreeSet trees;
vector<double*> *pattern_lhs = NULL;
vector<IntVector> expected_freqs;
DoubleVector *trees_logl = NULL;
IntVector diff_tree_ids;
int ntrees = 0;
IntVector::iterator it;
if (!tree.save_all_trees) {
readTrees(params, alignment, tree);
pattern_lhs = &tree.treels_ptnlh;
trees_logl = &tree.treels_logl;
if (!params.distinct_trees) {
// read in trees file
trees.init(params.user_file, params.is_rooted, params.tree_burnin, params.tree_max_count);
if (pattern_lhs->size() != trees.size())
outError("Different number of sitelh vectors");
// get distinct trees
ntrees = trees.size();
IntVector tree_category;
trees.categorizeDistinctTrees(tree_category);
for (i = 0; i < ntrees; i++) {
int cat = tree_category[i];
if (diff_tree_ids.empty() || tree_category[diff_tree_ids.back()] < cat)
diff_tree_ids.push_back(i);
}
cout << diff_tree_ids.size() << " distinct trees detected" << endl;
}
} else {
if (tree.treels_ptnlh.empty()) {
cout << "New bootstrap is not applicable due to no candiate trees" << endl;
return;
}
pattern_lhs = &tree.treels_ptnlh;
trees_logl = &tree.treels_logl;
//cout << "logl_cutoff = " << tree.logl_cutoff << " after " << tree.max_candidate_trees <<" trees" << endl;
}
if (diff_tree_ids.empty()) {
diff_tree_ids.resize(pattern_lhs->size());
ntrees = pattern_lhs->size();
for (i = 0; i < ntrees; i++) diff_tree_ids[i] = i;
}
IntVector origin_freq;
for (i = 0; i < alignment->getNPattern(); i++)
origin_freq.push_back(alignment->at(i).frequency);
if (verbose_mode >= VB_DEBUG) {
cout << "Original pattern freq: ";
for (i = 0; i < alignment->getNPattern(); i++)
cout << alignment->at(i).frequency << " ";
cout << endl;
}
cout << pattern_lhs->size() << " log-likelihood vectors loaded" << endl;
int ndiff = diff_tree_ids.size();
// consider only 10,000 trees with highest likelihoods
if (params.max_candidate_trees > 0 && ndiff > params.max_candidate_trees) {
DoubleVector neg_logl;
neg_logl.resize(ndiff);
for (i = 0; i < ndiff; i++)
neg_logl[i] = -trees_logl->at(diff_tree_ids[i]);
nth_element(neg_logl.begin(), neg_logl.begin() + params.max_candidate_trees, neg_logl.end());
double logl_cutoff = -neg_logl[params.max_candidate_trees];
IntVector diff_tree_ids_new;
diff_tree_ids_new.reserve(params.max_candidate_trees);
for (i = 0; i < ndiff; i++)
if (trees_logl->at(diff_tree_ids[i]) > logl_cutoff)
diff_tree_ids_new.push_back(diff_tree_ids[i]);
diff_tree_ids = diff_tree_ids_new;
ndiff = diff_tree_ids.size();
cout << "Reduce to " << ndiff << " highest likelihood trees with cutoff " << logl_cutoff << endl;
}
IntVector orig_diff_tree_ids = diff_tree_ids;
// compute multinomial probability for every distinct tree
DoubleVector prob_vec;
for (it = diff_tree_ids.begin(); it != diff_tree_ids.end(); it++) {
double prob;
alignment->multinomialProb((*pattern_lhs)[*it], prob);
prob_vec.push_back(prob);
IntVector expected_freq;
computeExpectedNorFre(alignment, (*pattern_lhs)[*it], expected_freq);
expected_freqs.push_back(expected_freq);
if (verbose_mode >= VB_DEBUG) {
for (i = 0; i < expected_freq.size(); i++)
cout << expected_freq[i] << " ";
cout << endl;
}
}
IntVector diff_tree_weights;
if (params.use_elw_method) { // compute ELW weights
DoubleVector elw, sh_pval;
computeExpectedLhWeights(alignment, (*pattern_lhs), diff_tree_ids, params.gbo_replicates, elw, params.bootstrap_spec, &sh_pval);
string elw_file_name = params.out_prefix;
elw_file_name += ".elw";
ofstream elw_file(elw_file_name.c_str());
elw_file << "Treeid\tELW\tSH-pval" << endl;
for (i = 0; i < elw.size(); i++)
elw_file << diff_tree_ids[i]+1 << "\t" << elw[i] << "\t" << sh_pval[i] << endl;
elw_file.close();
cout << "ELW printed to " << elw_file_name << endl;
diff_tree_weights.resize(diff_tree_ids.size(), 0);
for (i = 0; i < diff_tree_ids.size(); i++)
diff_tree_weights[i] = round(elw[i]*1000000);
} else {
double own_prob;
alignment->multinomialProb(*alignment, own_prob);
//cout << "Own prob: " << own_prob << endl;
cout << "Conducting " << params.gbo_replicates << " non-parametric resampling ";
if (params.use_rell_method)
cout << "using RELL" << endl;
else
cout << "using Euclidean distance" << endl;
if (params.use_weighted_bootstrap)
cout << "Multinomial weighting for bootstrap sample ";
else
cout << "Equal weighting for bootstrap sample ";
if (params.use_max_tree_per_bootstrap)
cout << "and selecting one tree per bootstrap" << endl;
else
cout << "and selecting multiple trees per bootstrap" << endl;
double accepted_diff = 0.5;
cout << "Accepted logl difference: " << accepted_diff << endl;
// generate bootstrap samples
for (i = 0; i < params.gbo_replicates; i++) {
IntVector pattern_freq;
alignment->createBootstrapAlignment(pattern_freq, params.bootstrap_spec);
double prob;
if (params.use_weighted_bootstrap)
prob = alignment->multinomialProb(pattern_freq);
else
prob = 0;
if (params.use_rell_method) {
// select best-fit tree by RELL method
DoubleVector logl;
logl.resize(ndiff);
for (j = 0; j < ndiff; j++) {
int tree_id = diff_tree_ids[j];
logl[j] = computeRELL((*pattern_lhs)[tree_id], pattern_freq);
//if (verbose_mode >= VB_MAX) cout << logl << endl;
}
DoubleVector::iterator max_logl = max_element(logl.begin(), logl.end());
int k = 0;
if (params.use_max_tree_per_bootstrap) {
double logl_cutoff = *max_logl - accepted_diff;
int num_max = 0;
for (j = 0; j < ndiff; j++)
if (logl[j] >= logl_cutoff) num_max++;
if (num_max == 1) {
diff_tree_ids.push_back(diff_tree_ids[max_logl - logl.begin()]);
prob_vec.push_back(prob);
} else {
int max_rand = random_int(num_max);
for (j = 0; j < ndiff && max_rand >= 0; j++)
if (logl[j] >= logl_cutoff) {
max_rand--;
if (max_rand < 0) {
diff_tree_ids.push_back(diff_tree_ids[j]);
prob_vec.push_back(prob);
break;
}
}
}
if (verbose_mode >= VB_MAX) {
cout << "Bootstrap " << i+1 << " lprob=" << prob << " max_logl=" <<
*max_logl << " select " << diff_tree_ids[j]+1;
if (num_max > 1)
cout << " tie broken " << num_max << endl;
else
cout << endl;
}
} else {
DoubleVector weights;
weights.resize(ndiff);
for (j = 0; j < ndiff; j++) weights[j] = exp(logl[j] - *max_logl);
double sum = accumulate(weights.begin(), weights.end(), 0.0);
for (j = 0; j < ndiff; j++) weights[j] /= sum;
int max_id = max_element(weights.begin(), weights.end()) - weights.begin();
double weight_cutoff = weights[max_id] * 0.001;
for (j = 0; j < ndiff; j++) {
if (weights[j] >= weight_cutoff) {
diff_tree_ids.push_back(diff_tree_ids[j]);
prob_vec.push_back(prob + log(weights[j]));
k++;
}
}
if (verbose_mode >= VB_MAX)
cout << "Bootstrap " << i+1 << " lprob=" << prob << " max_id=" << max_id << " max_w=" <<
weights[max_id] << " " << k << " trees" << endl;
}
}
else {
// select best-fit tree by euclidean distance
double min_dist = -1.0;
int chosen_id = -1;
for (j = 0; j < expected_freqs.size(); j++) {
double dist = euclideanDist(pattern_freq, expected_freqs[j]);
//cout << dist << " ";
if (dist < min_dist || min_dist < 0) {
min_dist = dist;
chosen_id = j;
}
}
diff_tree_ids.push_back(diff_tree_ids[chosen_id]);
prob_vec.push_back(prob);
if (verbose_mode >= VB_MAX) {
cout << "Bootstrap " << i+1 << " choose id=" << diff_tree_ids[chosen_id]+1 // <<" dist=" << min_dist
<< " lprob=" << prob << endl;
}
}
if (verbose_mode >= VB_DEBUG) {
for (j = 0; j < pattern_freq.size(); j++)
cout << pattern_freq[j] << " ";
cout << endl;
}
}
// compute tree weights from the log-probability
computeTreeWeights(prob_vec, diff_tree_weights);
} // end of Arndt's method
IntVector final_tree_weights;
final_tree_weights.resize(ntrees, 0);
//for (i = 0; i < ntrees; i++) trees.tree_weights[i] = 0;
for (it = diff_tree_ids.begin(), i = 0; it != diff_tree_ids.end(); it++, i++) {
final_tree_weights[*it] += diff_tree_weights[i];
}
// now load in the trees
if (tree.save_all_trees) {
trees.init(tree.treels, tree.rooted, final_tree_weights);
string out_file = params.out_prefix;
if (params.do_compression) {
out_file += ".btrees.gz";
printTrees(out_file.c_str(), tree, &final_tree_weights, params.do_compression);
out_file = params.out_prefix;
out_file += ".alltrees.gz";
printTrees(out_file.c_str(), tree, NULL, params.do_compression);
if (params.print_site_lh) {
out_file = params.out_prefix;
out_file += ".ptnlh.gz";
printPatternLh(out_file.c_str(), &tree, params.do_compression);
}
}
} else if (params.distinct_trees) {
trees.init(params.user_file, params.is_rooted, params.tree_burnin, params.tree_max_count, NULL, &final_tree_weights, params.do_compression);
// assuming user_file contains species ID (instead of full name)
trees.assignLeafID();
//trees.init(params.user_file, params.is_rooted, params.tree_burnin, NULL);
/* if (pattern_lhs->size() != trees.size())
outError("Different number of sitelh vectors");*/
}
tree.summarizeBootstrap(params, trees);
/* int sum_weights = trees.sumTreeWeights();
if (verbose_mode >= VB_MED) {
for (i = 0; i < trees.size(); i++)
if (trees.tree_weights[i] > 0)
cout << "Tree " << i+1 << " weight= " << trees.tree_weights[i] * 100 / sum_weights << endl;
}
int max_tree_id = max_element(trees.tree_weights.begin(), trees.tree_weights.end()) - trees.tree_weights.begin();
cout << "max_tree_id = " << max_tree_id+1 << " max_weight = " << trees.tree_weights[max_tree_id];
cout << " (" << trees.tree_weights[max_tree_id] * 100 / sum_weights << "%)"<< endl;
// assign bootstrap support
SplitGraph sg;
SplitIntMap hash_ss;
// make the taxa name
vector<string> taxname;
taxname.resize(tree.leafNum);
tree.getTaxaName(taxname);
trees.convertSplits(taxname, sg, hash_ss, SW_COUNT, -1, false); // do not sort taxa
cout << sg.size() << " splits found" << endl;
// compute the percentage of appearance
sg.scaleWeight(100.0 / trees.sumTreeWeights(), true);
// printSplitSet(sg, hash_ss);
//sg.report(cout);
cout << "Creating bootstrap support values..." << endl;
stringstream tree_stream;
tree.printTree(tree_stream, WT_TAXON_ID | WT_BR_LEN);
MExtTree mytree;
mytree.readTree(tree_stream, tree.rooted);
mytree.assignLeafID();
mytree.createBootstrapSupport(taxname, trees, sg, hash_ss);
// now write resulting tree with supports
tree_stream.seekp(0, ios::beg);
mytree.printTree(tree_stream);
// now read resulting tree
tree_stream.seekg(0, ios::beg);
tree.freeNode();
tree.readTree(tree_stream, tree.rooted);
tree.assignLeafNames();
tree.initializeAllPartialLh();
tree.clearAllPartialLH();
string out_file;
if (!tree.save_all_trees) {
out_file = params.out_prefix;
out_file += ".suptree";
tree.printTree(out_file.c_str());
cout << "Tree with assigned bootstrap support written to " << out_file << endl;
}
out_file = params.out_prefix;
out_file += ".splits";
sg.saveFile(out_file.c_str(), true);
cout << "Split supports printed to NEXUS file " << out_file << endl;
out_file = params.out_prefix;
out_file += ".supval";
tree.writeInternalNodeNames(out_file);
cout << "Support values written to " << out_file << endl;*/
/*
if (!tree.save_all_trees) {
for (vector<double* >::reverse_iterator it = pattern_lhs->rbegin(); it != pattern_lhs->rend(); it++)
delete [] (*it);
delete pattern_lhs;
delete trees_logl;
}*/
double end_time = getCPUTime();
cout << "Time for guided bootstrap: " << (end_time-begin_time) << " seconds" << endl << endl;
//delete [] rfdist;
}
void runGuidedBootstrap(Params ¶ms, Alignment *alignment, IQTree &tree) {
if (!params.check_gbo_sample_size) {
runGuidedBootstrapReal(params, alignment, tree);
return;
}
int max_sample = params.max_candidate_trees;
if (tree.save_all_trees) max_sample = tree.treels.size();
for (int sample_size = params.check_gbo_sample_size; sample_size <= max_sample; sample_size *= 2) {
cout << "CHECKING SAMPLING SIZE " << sample_size << endl;
int sample_saved = params.max_candidate_trees;
char *prefix_saved = params.out_prefix;
// set parameters properly
string prefix = params.out_prefix;
stringstream ss;
ss << ".S" << sample_size;
prefix += ss.str();
//params.out_prefix = (char*)prefix.c_str();
params.max_candidate_trees = sample_size;
runGuidedBootstrapReal(params, alignment, tree);
// restore parameters
params.max_candidate_trees = sample_saved;
params.out_prefix = prefix_saved;
}
}
/* compute logarithm of (n choose k) */
double logNchooseK(int n, int k) {
if (k > n-k) k = n-k;
double ret = 0.0;
int i;
for (i = k+1; i <= n; i++) ret += log(i);
for (i = 2; i <= n-k; i++) ret -= log(i);
return ret;
}
void generateFirstMultinorm(IntVector &x, int n, int k) {
x.resize(k, 0);
x.back() = n;
}
bool generateNextMultinorm(IntVector &x) {
if (x.size() < 2) return false;
int id = x.size()-1;
while (id >= 0 && x[id] == 0) id--;
if (id <= 0) return false;
x[id-1]++;
x.back() = x[id]-1;
if (id < x.size()-1) x[id] = 0;
return true;
}
void generateMultinorm(IntVector &x, int n, int k, int i, int sum) {
if (x.empty()) x.resize(k, 0);