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de34b538 1/**********************************************************************************************/
2/* General class for alignment with large number of degrees of freedom */
3/* Based on the original milliped2 by Volker Blobel */
339fbe23 4/* and AliMillepede class by Javier */
5/* Allows operations with large sparse matrices */
de34b538 6/* http://www.desy.de/~blobel/mptalks.html */
7/* */
8/* Author: ruben.shahoyan@cern.ch */
9/* */
10/**********************************************************************************************/
11
8a9ab0eb 12#include "AliMillePede2.h"
13#include "AliLog.h"
14#include <TStopwatch.h>
de34b538 15#include <TFile.h>
f9efbbf6 16#include <TChain.h>
de34b538 17#include <TMath.h>
7c3070ec 18#include <TVectorD.h>
e30a812f 19#include <TArrayL.h>
1f6eade8 20#include <TArrayF.h>
f9efbbf6 21#include <TSystem.h>
de34b538 22#include "AliMatrixSq.h"
23#include "AliSymMatrix.h"
24#include "AliRectMatrix.h"
25#include "AliMatrixSparse.h"
e30a812f 26#include <stdio.h>
27#include <stdlib.h>
28#include <unistd.h>
29#include <sys/types.h>
30#include <sys/stat.h>
31#include <fcntl.h>
f9efbbf6 32#include <fstream>
8a9ab0eb 33
7fb585bc 34//#define _DUMP_EQ_BEFORE_
35//#define _DUMP_EQ_AFTER_
e041af50 36
c9f619c7 37//#define _DUMPEQ_BEFORE_
38//#define _DUMPEQ_AFTER_
8a9ab0eb 39
a0ea48e0 40using std::ifstream;
8a9ab0eb 41ClassImp(AliMillePede2)
42
de34b538 43Bool_t AliMillePede2::fgInvChol = kTRUE; // Invert global matrix with Cholesky solver
44Bool_t AliMillePede2::fgWeightSigma = kTRUE; // weight local constraint by module statistics
45Bool_t AliMillePede2::fgIsMatGloSparse = kFALSE; // use faster dense matrix by default
46Int_t AliMillePede2::fgMinResCondType = 1; // Jacoby preconditioner by default
47Double_t AliMillePede2::fgMinResTol = 1.e-11; // default tolerance
48Int_t AliMillePede2::fgMinResMaxIter = 10000; // default max number of iterations
8a9ab0eb 49Int_t AliMillePede2::fgIterSol = AliMinResSolve::kSolMinRes; // default iterative solver
de34b538 50Int_t AliMillePede2::fgNKrylovV = 240; // default number of Krylov vectors to keep
8a9ab0eb 51
52//_____________________________________________________________________________________________
53AliMillePede2::AliMillePede2()
54: fNLocPar(0),
55 fNGloPar(0),
9a919f12 56 fNGloParIni(0),
8a9ab0eb 57 fNGloSize(0),
58//
59 fNLocEquations(0),
60 fIter(0),
61 fMaxIter(10),
62 fNStdDev(3),
63 fNGloConstraints(0),
de34b538 64 fNLagrangeConstraints(0),
8a9ab0eb 65 fNLocFits(0),
66 fNLocFitsRejected(0),
67 fNGloFix(0),
339fbe23 68 fGloSolveStatus(kFailed),
8a9ab0eb 69//
70 fChi2CutFactor(1.),
71 fChi2CutRef(1.),
72 fResCutInit(100.),
73 fResCut(100.),
de34b538 74 fMinPntValid(1),
8a9ab0eb 75//
de34b538 76 fNGroupsSet(0),
77 fParamGrID(0),
8a9ab0eb 78 fProcPnt(0),
79 fVecBLoc(0),
80 fDiagCGlo(0),
81 fVecBGlo(0),
82 fInitPar(0),
83 fDeltaPar(0),
84 fSigmaPar(0),
85 fIsLinear(0),
86 fConstrUsed(0),
87//
88 fGlo2CGlo(0),
89 fCGlo2Glo(0),
90//
91 fMatCLoc(0),
92 fMatCGlo(0),
93 fMatCGloLoc(0),
de34b538 94 //
95 fFillIndex(0),
96 fFillValue(0),
97 //
58e8ba3a 98 fRecDataTreeName("AliMillePedeRecords_Data"),
99 fRecConsTreeName("AliMillePedeRecords_Consaints"),
100 fRecDataBranchName("Record_Data"),
101 fRecConsBranchName("Record_Consaints"),
102 //
8a9ab0eb 103 fDataRecFName("/tmp/mp2_data_records.root"),
104 fRecord(0),
105 fDataRecFile(0),
106 fTreeData(0),
a8c5b94c 107 fRecFileStatus(0),
8a9ab0eb 108 //
109 fConstrRecFName("/tmp/mp2_constraints_records.root"),
110 fTreeConstr(0),
111 fConsRecFile(0),
112 fCurrRecDataID(0),
de34b538 113 fCurrRecConstrID(0),
e30a812f 114 fLocFitAdd(kTRUE),
c9f619c7 115 fUseRecordWeight(kTRUE),
116 fMinRecordLength(1),
e30a812f 117 fSelFirst(1),
118 fSelLast(-1),
119 fRejRunList(0),
9a919f12 120 fAccRunList(0),
1f6eade8 121 fAccRunListWgh(0),
122 fRunWgh(1),
9a919f12 123 fkReGroup(0)
e041af50 124{
125 fWghScl[0] = fWghScl[1] = -1;
126}
8a9ab0eb 127
128//_____________________________________________________________________________________________
129AliMillePede2::AliMillePede2(const AliMillePede2& src) :
9a919f12 130 TObject(src),fNLocPar(0),fNGloPar(0),fNGloParIni(0),fNGloSize(0),fNLocEquations(0),fIter(0),
de34b538 131 fMaxIter(10),fNStdDev(3),fNGloConstraints(0),fNLagrangeConstraints(0),
132 fNLocFits(0),fNLocFitsRejected(0),
8a9ab0eb 133 fNGloFix(0),fGloSolveStatus(0),fChi2CutFactor(0),fChi2CutRef(0),fResCutInit(0),
de34b538 134 fResCut(0),fMinPntValid(1),fNGroupsSet(0),fParamGrID(0),fProcPnt(0),fVecBLoc(0),fDiagCGlo(0),fVecBGlo(0),
8a9ab0eb 135 fInitPar(0),fDeltaPar(0),fSigmaPar(0),fIsLinear(0),fConstrUsed(0),fGlo2CGlo(0),fCGlo2Glo(0),
de34b538 136 fMatCLoc(0),fMatCGlo(0),fMatCGloLoc(0),fFillIndex(0),fFillValue(0),
58e8ba3a 137 fRecDataTreeName(0),fRecConsTreeName(0),fRecDataBranchName(0),fRecConsBranchName(0),
de34b538 138 fDataRecFName(0),fRecord(0),fDataRecFile(0),
a8c5b94c 139 fTreeData(0),fRecFileStatus(0),fConstrRecFName(0),fTreeConstr(0),fConsRecFile(0),fCurrRecDataID(0),
e30a812f 140 fCurrRecConstrID(0),fLocFitAdd(kTRUE),
c9f619c7 141 fUseRecordWeight(kTRUE),
142 fMinRecordLength(1),
e30a812f 143 fSelFirst(1),
144 fSelLast(-1),
145 fRejRunList(0),
9a919f12 146 fAccRunList(0),
1f6eade8 147 fAccRunListWgh(0),
148 fRunWgh(1),
9a919f12 149 fkReGroup(0)
e041af50 150{
151 fWghScl[0] = src.fWghScl[0];
152 fWghScl[1] = src.fWghScl[1];
153 printf("Dummy\n");
154}
8a9ab0eb 155
156//_____________________________________________________________________________________________
157AliMillePede2::~AliMillePede2()
158{
339fbe23 159 // destructor
8a9ab0eb 160 CloseDataRecStorage();
161 CloseConsRecStorage();
162 //
de34b538 163 delete[] fParamGrID;
8a9ab0eb 164 delete[] fProcPnt;
165 delete[] fVecBLoc;
166 delete[] fDiagCGlo;
167 delete[] fVecBGlo;
168 delete[] fInitPar;
169 delete[] fDeltaPar;
170 delete[] fSigmaPar;
171 delete[] fGlo2CGlo;
172 delete[] fCGlo2Glo;
173 delete[] fIsLinear;
174 delete[] fConstrUsed;
de34b538 175 delete[] fFillIndex;
176 delete[] fFillValue;
8a9ab0eb 177 //
178 delete fRecord;
179 delete fMatCLoc;
180 delete fMatCGlo;
181 delete fMatCGloLoc;
e30a812f 182 delete fRejRunList;
183 delete fAccRunList;
1f6eade8 184 delete fAccRunListWgh;
8a9ab0eb 185}
186
187//_____________________________________________________________________________________________
9a919f12 188Int_t AliMillePede2::InitMille(int nGlo, int nLoc, int lNStdDev,double lResCut, double lResCutInit, const Int_t* regroup)
8a9ab0eb 189{
339fbe23 190 // init all
9a919f12 191 //
192 fNGloParIni = nGlo;
193 if (regroup) { // regrouping is requested
194 fkReGroup = regroup;
195 int ng = 0; // recalculate N globals
196 int maxPID = -1;
197 for (int i=0;i<nGlo;i++) if (regroup[i]>=0) {ng++; if (regroup[i]>maxPID) maxPID = regroup[i];}
f91a16b5 198 maxPID++;
199 AliInfo(Form("Regrouping is requested: from %d raw to %d formal globals grouped to %d real globals",nGlo,ng,maxPID));
200 nGlo = maxPID;
9a919f12 201 }
8a9ab0eb 202 if (nLoc>0) fNLocPar = nLoc;
203 if (nGlo>0) fNGloPar = nGlo;
204 if (lResCutInit>0) fResCutInit = lResCutInit;
205 if (lResCut>0) fResCut = lResCut;
206 if (lNStdDev>0) fNStdDev = lNStdDev;
207 //
d56a0575 208 AliInfo(Form("NLoc: %d NGlo: %d",fNLocPar,fNGloPar));
209
8a9ab0eb 210 fNGloSize = fNGloPar;
211 //
3c5b4cc8 212 if (fgIsMatGloSparse) {fMatCGlo = new AliMatrixSparse(fNGloPar); fMatCGlo->SetSymmetric(kTRUE);}
213 else fMatCGlo = new AliSymMatrix(fNGloPar);
214 //
215 fFillIndex = new Int_t[fNGloPar];
216 fFillValue = new Double_t[fNGloPar];
217 //
218 fMatCLoc = new AliSymMatrix(fNLocPar);
219 fMatCGloLoc = new AliRectMatrix(fNGloPar,fNLocPar);
220 //
221 fParamGrID = new Int_t[fNGloPar];
222 fProcPnt = new Int_t[fNGloPar];
223 fVecBLoc = new Double_t[fNLocPar];
224 fDiagCGlo = new Double_t[fNGloPar];
225 //
226 fInitPar = new Double_t[fNGloPar];
227 fDeltaPar = new Double_t[fNGloPar];
228 fSigmaPar = new Double_t[fNGloPar];
229 fIsLinear = new Bool_t[fNGloPar];
230 //
231 fGlo2CGlo = new Int_t[fNGloPar];
232 fCGlo2Glo = new Int_t[fNGloPar];
8a9ab0eb 233 //
234 memset(fVecBLoc ,0,fNLocPar*sizeof(Double_t));
235 memset(fDiagCGlo ,0,fNGloPar*sizeof(Double_t));
236 memset(fInitPar ,0,fNGloPar*sizeof(Double_t));
237 memset(fDeltaPar ,0,fNGloPar*sizeof(Double_t));
238 memset(fSigmaPar ,0,fNGloPar*sizeof(Double_t));
239 memset(fProcPnt ,0,fNGloPar*sizeof(Int_t));
240 //
241 for (int i=fNGloPar;i--;) {
de34b538 242 fGlo2CGlo[i] = fCGlo2Glo[i] = -1;
8a9ab0eb 243 fIsLinear[i] = kTRUE;
de34b538 244 fParamGrID[i] = -1;
8a9ab0eb 245 }
246 //
c9f619c7 247 fWghScl[0] = -1;
248 fWghScl[1] = -1;
8a9ab0eb 249 return 1;
250}
251
8a9ab0eb 252//_____________________________________________________________________________________________
253Bool_t AliMillePede2::ImposeDataRecFile(const char* fname)
254{
339fbe23 255 // set filename for records
8a9ab0eb 256 CloseDataRecStorage();
257 SetDataRecFName(fname);
258 return InitDataRecStorage(kTRUE); // open in read mode
259}
260
261//_____________________________________________________________________________________________
262Bool_t AliMillePede2::ImposeConsRecFile(const char* fname)
263{
339fbe23 264 // set filename for constraints
8a9ab0eb 265 CloseConsRecStorage();
266 SetConsRecFName(fname);
267 return InitConsRecStorage(kTRUE); // open in read mode
268}
269
270//_____________________________________________________________________________________________
271Bool_t AliMillePede2::InitDataRecStorage(Bool_t read)
272{
273 // initialize the buffer for processed measurements records
274 //
f9efbbf6 275 if (fTreeData) {AliInfo("Data Records File is already initialized"); return kFALSE;}
8a9ab0eb 276 //
277 if (!fRecord) fRecord = new AliMillePedeRecord();
278 //
f9efbbf6 279 if (!read) { // write mode: cannot use chain
280 fDataRecFile = TFile::Open(GetDataRecFName(),"recreate");
281 if (!fDataRecFile) {AliFatal(Form("Failed to initialize data records file %s",GetDataRecFName())); return kFALSE;}
282 AliInfo(Form("File %s used for derivatives records",GetDataRecFName()));
58e8ba3a 283 fTreeData = new TTree(GetRecDataTreeName(),"Data Records for AliMillePede2");
284 fTreeData->Branch(GetRecDataBranchName(),"AliMillePedeRecord",&fRecord,32000,99);
8a9ab0eb 285 }
f9efbbf6 286 else { // use chain
58e8ba3a 287 TChain* ch = new TChain(GetRecDataTreeName());
f9efbbf6 288 //
289 if (fDataRecFName.EndsWith(".root")) ch->AddFile(fDataRecFName);
290 else { // assume text file with list of filenames
291 //
292 ifstream inpf(fDataRecFName.Data());
293 if (!inpf.good()) {AliInfo(Form("Failed on input records list %s\n",fDataRecFName.Data())); return kFALSE;}
294 //
295 TString recfName;
f9efbbf6 296 while ( !(recfName.ReadLine(inpf)).eof() ) {
297 recfName = recfName.Strip(TString::kBoth,' ');
298 if (recfName.BeginsWith("//") || recfName.BeginsWith("#") || !recfName.EndsWith(".root")) { // comment
299 AliInfo(Form("Skip %s\n",recfName.Data()));
300 continue;
301 }
302 //
303 recfName = recfName.Strip(TString::kBoth,',');
304 recfName = recfName.Strip(TString::kBoth,'"');
305 gSystem->ExpandPathName(recfName);
306 printf("Adding %s\n",recfName.Data());
307 ch->AddFile(recfName.Data());
308 }
309 }
310 //
311 Long64_t nent = ch->GetEntries();
312 if (nent<1) { AliInfo("Obtained chain is empty"); return kFALSE;}
313 fTreeData = ch;
58e8ba3a 314 fTreeData->SetBranchAddress(GetRecDataBranchName(),&fRecord);
f9efbbf6 315 AliInfo(Form("Found %lld derivatives records",nent));
316 }
8a9ab0eb 317 fCurrRecDataID = -1;
a8c5b94c 318 fRecFileStatus = read ? 1:2;
8a9ab0eb 319 //
320 return kTRUE;
321}
322
323//_____________________________________________________________________________________________
324Bool_t AliMillePede2::InitConsRecStorage(Bool_t read)
325{
326 // initialize the buffer for processed measurements records
327 //
328 if (fConsRecFile) {AliInfo("Constraints Records File is already initialized"); return kFALSE;}
329 //
330 if (!fRecord) fRecord = new AliMillePedeRecord();
331 //
332 fConsRecFile = TFile::Open(GetConsRecFName(),read ? "":"recreate");
333 if (!fConsRecFile) {AliInfo(Form("Failed to initialize constraints records file %s",GetConsRecFName())); return kFALSE;}
334 //
335 AliInfo(Form("File %s used for constraints records",GetConsRecFName()));
336 if (read) {
58e8ba3a 337 fTreeConstr = (TTree*)fConsRecFile->Get(GetRecConsTreeName());
8a9ab0eb 338 if (!fTreeConstr) {AliInfo(Form("Did not find constraints records tree in %s",GetConsRecFName())); return kFALSE;}
58e8ba3a 339 fTreeConstr->SetBranchAddress(GetRecConsBranchName(),&fRecord);
73bbf779 340 AliInfo(Form("Found %lld constraints records",fTreeConstr->GetEntries()));
8a9ab0eb 341 //
342 }
343 else {
344 //
58e8ba3a 345 fTreeConstr = new TTree(GetRecConsTreeName(),"Constraints Records for AliMillePede2");
346 fTreeConstr->Branch(GetRecConsBranchName(),"AliMillePedeRecord",&fRecord,32000,99);
8a9ab0eb 347 }
348 fCurrRecConstrID = -1;
349 //
350 return kTRUE;
351}
352
353//_____________________________________________________________________________________________
354void AliMillePede2::CloseDataRecStorage()
355{
339fbe23 356 // close records file
8a9ab0eb 357 if (fTreeData) {
f9efbbf6 358 if (fDataRecFile && fDataRecFile->IsWritable()) {
8a9ab0eb 359 fDataRecFile->cd();
360 fTreeData->Write();
361 }
362 delete fTreeData;
363 fTreeData = 0;
f9efbbf6 364 if (fDataRecFile) {
365 fDataRecFile->Close();
366 delete fDataRecFile;
367 fDataRecFile = 0;
368 }
8a9ab0eb 369 }
a8c5b94c 370 fRecFileStatus = 0;
8a9ab0eb 371 //
372}
373
374//_____________________________________________________________________________________________
375void AliMillePede2::CloseConsRecStorage()
376{
339fbe23 377 // close constraints file
8a9ab0eb 378 if (fTreeConstr) {
379 if (fConsRecFile->IsWritable()) {
380 fConsRecFile->cd();
381 fTreeConstr->Write();
382 }
383 delete fTreeConstr;
384 fTreeConstr = 0;
385 fConsRecFile->Close();
386 delete fConsRecFile;
387 fConsRecFile = 0;
388 }
389 //
390}
391
392//_____________________________________________________________________________________________
393Bool_t AliMillePede2::ReadNextRecordData()
394{
395 // read next data record (if any)
396 if (!fTreeData || ++fCurrRecDataID >= fTreeData->GetEntries()) { fCurrRecDataID--; return kFALSE;}
397 fTreeData->GetEntry(fCurrRecDataID);
398 return kTRUE;
399}
400
401//_____________________________________________________________________________________________
402Bool_t AliMillePede2::ReadNextRecordConstraint()
403{
404 // read next constraint record (if any)
405 if (!fTreeConstr || ++fCurrRecConstrID >= fTreeConstr->GetEntries()) { fCurrRecConstrID--; return kFALSE;}
406 fTreeConstr->GetEntry(fCurrRecConstrID);
407 return kTRUE;
408}
409
a8c5b94c 410//_____________________________________________________________________________________________
411void AliMillePede2::SetRecordWeight(double wgh)
412{
339fbe23 413 // assign weight
a8c5b94c 414 if (fRecFileStatus<2) InitDataRecStorage(); // create a buffer to store the data
415 fRecord->SetWeight(wgh);
416}
417
e30a812f 418//_____________________________________________________________________________________________
419void AliMillePede2::SetRecordRun(Int_t run)
420{
339fbe23 421 // assign run
e30a812f 422 if (fRecFileStatus<2) InitDataRecStorage(); // create a buffer to store the data
423 fRecord->SetRunID(run);
424}
425
8a9ab0eb 426//_____________________________________________________________________________________________
427void AliMillePede2::SetLocalEquation(double *dergb, double *derlc, double lMeas, double lSigma)
428{
339fbe23 429 // assing derivs of loc.eq.
a8c5b94c 430 if (fRecFileStatus<2) InitDataRecStorage(); // create a buffer to store the data
8a9ab0eb 431 //
432 // write data of single measurement
433 if (lSigma<=0.0) { // If parameter is fixed, then no equation
434 for (int i=fNLocPar; i--;) derlc[i] = 0.0;
9a919f12 435 for (int i=fNGloParIni; i--;) dergb[i] = 0.0;
8a9ab0eb 436 return;
437 }
438 //
439 fRecord->AddResidual(lMeas);
440 //
441 // Retrieve local param interesting indices
cc9bec47 442 for (int i=0;i<fNLocPar;i++) if (!IsZero(derlc[i])) {fRecord->AddIndexValue(i,derlc[i]); derlc[i] = 0.0;}
8a9ab0eb 443 //
444 fRecord->AddWeight( 1.0/lSigma/lSigma );
445 //
446 // Idem for global parameters
9a919f12 447 for (int i=0;i<fNGloParIni;i++) if (!IsZero(dergb[i])) {
de34b538 448 fRecord->AddIndexValue(i,dergb[i]); dergb[i] = 0.0;
9a919f12 449 int idrg = GetRGId(i);
450 fRecord->MarkGroup(idrg<0 ? -1 : fParamGrID[i]);
de34b538 451 }
d56a0575 452 // fRecord->Print();
8a9ab0eb 453 //
454}
455
456//_____________________________________________________________________________________________
457void AliMillePede2::SetLocalEquation(int *indgb, double *dergb, int ngb, int *indlc,
458 double *derlc,int nlc,double lMeas,double lSigma)
459{
9a919f12 460 // write data of single measurement. Note: the records ignore regrouping, store direct parameters
8a9ab0eb 461 if (lSigma<=0.0) { // If parameter is fixed, then no equation
462 for (int i=nlc;i--;) derlc[i] = 0.0;
463 for (int i=ngb;i--;) dergb[i] = 0.0;
464 return;
465 }
466 //
a8c5b94c 467 if (fRecFileStatus<2) InitDataRecStorage(); // create a buffer to store the data
8a9ab0eb 468 //
469 fRecord->AddResidual(lMeas);
470 //
471 // Retrieve local param interesting indices
cc9bec47 472 for (int i=0;i<nlc;i++) if (!IsZero(derlc[i])) {fRecord->AddIndexValue(indlc[i],derlc[i]); derlc[i]=0.; indlc[i]=0;}
8a9ab0eb 473 //
474 fRecord->AddWeight( 1./lSigma/lSigma );
475 //
476 // Idem for global parameters
cc9bec47 477 for (int i=0;i<ngb;i++) if (!IsZero(dergb[i])) {fRecord->AddIndexValue(indgb[i],dergb[i]); dergb[i]=0.; indgb[i]=0;}
8a9ab0eb 478 //
479}
480
de34b538 481
8a9ab0eb 482//_____________________________________________________________________________________________
339fbe23 483void AliMillePede2::SetGlobalConstraint(const double *dergb, double val, double sigma)
8a9ab0eb 484{
485 // Define a constraint equation.
486 if (!fConsRecFile || !fConsRecFile->IsWritable()) InitConsRecStorage(); // create a buffer to store the data
487 //
488 fRecord->Reset();
489 fRecord->AddResidual(val);
de34b538 490 fRecord->AddWeight(sigma);
9a919f12 491 for (int i=0; i<fNGloParIni; i++) if (!IsZero(dergb[i])) fRecord->AddIndexValue(i,dergb[i]);
8a9ab0eb 492 fNGloConstraints++;
cc9bec47 493 if (IsZero(sigma)) fNLagrangeConstraints++;
de34b538 494 // printf("NewConstraint:\n"); fRecord->Print(); //RRR
8a9ab0eb 495 SaveRecordConstraint();
496 //
497}
498
499//_____________________________________________________________________________________________
339fbe23 500void AliMillePede2::SetGlobalConstraint(const int *indgb, const double *dergb, int ngb, double val,double sigma)
8a9ab0eb 501{
502 // Define a constraint equation.
503 if (!fConsRecFile || !fConsRecFile->IsWritable()) InitConsRecStorage(); // create a buffer to store the data
504 fRecord->Reset();
505 fRecord->AddResidual(val);
de34b538 506 fRecord->AddWeight(sigma); // dummy
cc9bec47 507 for (int i=0; i<ngb; i++) if (!IsZero(dergb[i])) fRecord->AddIndexValue(indgb[i],dergb[i]);
8a9ab0eb 508 fNGloConstraints++;
cc9bec47 509 if (IsZero(sigma)) fNLagrangeConstraints++;
8a9ab0eb 510 SaveRecordConstraint();
511 //
512}
513
514//_____________________________________________________________________________________________
515Int_t AliMillePede2::LocalFit(double *localParams)
516{
517 /*
518 Perform local parameters fit once all the local equations have been set
519 -----------------------------------------------------------
520 localParams = (if !=0) will contain the fitted track parameters and
521 related errors
522 */
de34b538 523 static int nrefSize = 0;
524 // static TArrayI refLoc,refGlo,nrefLoc,nrefGlo;
525 static Int_t *refLoc=0,*refGlo=0,*nrefLoc=0,*nrefGlo=0;
8a9ab0eb 526 int nPoints = 0;
527 //
de34b538 528 AliSymMatrix &matCLoc = *fMatCLoc;
529 AliMatrixSq &matCGlo = *fMatCGlo;
530 AliRectMatrix &matCGloLoc = *fMatCGloLoc;
8a9ab0eb 531 //
532 memset(fVecBLoc,0,fNLocPar*sizeof(double));
de34b538 533 matCLoc.Reset();
8a9ab0eb 534 //
535 int cnt=0;
536 int recSz = fRecord->GetSize();
537 //
538 while(cnt<recSz) { // Transfer the measurement records to matrices
539 //
540 // extract addresses of residual, weight and pointers on local and global derivatives for each point
de34b538 541 if (nrefSize<=nPoints) {
542 int *tmpA = 0;
543 nrefSize = 2*(nPoints+1);
544 tmpA = refLoc; refLoc = new Int_t[nrefSize]; if (tmpA) memcpy(refLoc,tmpA,nPoints*sizeof(int));
545 tmpA = refGlo; refGlo = new Int_t[nrefSize]; if (tmpA) memcpy(refGlo,tmpA,nPoints*sizeof(int));
546 tmpA = nrefLoc; nrefLoc = new Int_t[nrefSize]; if (tmpA) memcpy(nrefLoc,tmpA,nPoints*sizeof(int));
547 tmpA = nrefGlo; nrefGlo = new Int_t[nrefSize]; if (tmpA) memcpy(nrefGlo,tmpA,nPoints*sizeof(int));
8a9ab0eb 548 }
549 //
de34b538 550 refLoc[nPoints] = ++cnt;
8a9ab0eb 551 int nLoc = 0;
552 while(!fRecord->IsWeight(cnt)) {nLoc++; cnt++;}
de34b538 553 nrefLoc[nPoints] = nLoc;
8a9ab0eb 554 //
de34b538 555 refGlo[nPoints] = ++cnt;
8a9ab0eb 556 int nGlo = 0;
557 while(!fRecord->IsResidual(cnt) && cnt<recSz) {nGlo++; cnt++;}
de34b538 558 nrefGlo[nPoints] = nGlo;
8a9ab0eb 559 //
560 nPoints++;
561 }
c9f619c7 562 if (fMinRecordLength>0 && nPoints < fMinRecordLength) return 0; // ignore
563 //
8a9ab0eb 564 double vl;
565 //
c9f619c7 566 double gloWgh = fRunWgh;
567 if (fUseRecordWeight) gloWgh *= fRecord->GetWeight(); // global weight for this set
7c3070ec 568 Int_t maxLocUsed = 0;
569 //
8a9ab0eb 570 for (int ip=nPoints;ip--;) { // Transfer the measurement records to matrices
de34b538 571 double resid = fRecord->GetValue( refLoc[ip]-1 );
c9f619c7 572 double weight = fRecord->GetValue( refGlo[ip]-1 )*gloWgh;
573 int odd = (ip&0x1);
574 if (fWghScl[odd]>0) weight *= fWghScl[odd];
de34b538 575 double *derLoc = fRecord->GetValue()+refLoc[ip];
576 double *derGlo = fRecord->GetValue()+refGlo[ip];
577 int *indLoc = fRecord->GetIndex()+refLoc[ip];
578 int *indGlo = fRecord->GetIndex()+refGlo[ip];
579 //
a8c5b94c 580 for (int i=nrefGlo[ip];i--;) { // suppress the global part (only relevant with iterations)
9a919f12 581 //
582 // if regrouping was requested, do it here
583 if (fkReGroup) {
584 int idtmp = fkReGroup[ indGlo[i] ];
585 if (idtmp == kFixParID) indGlo[i] = kFixParID; // fixed param in regrouping
ebf239ae 586 else indGlo[i] = idtmp;
9a919f12 587 }
588 //
8a9ab0eb 589 int iID = indGlo[i]; // Global param indice
9a919f12 590 if (iID<0 || fSigmaPar[iID]<=0.) continue; // fixed parameter RRRCheck
8a9ab0eb 591 if (fIsLinear[iID]) resid -= derGlo[i]*(fInitPar[iID]+fDeltaPar[iID]); // linear parameter
592 else resid -= derGlo[i]*fDeltaPar[iID]; // nonlinear parameter
593 }
594 //
de34b538 595 // Symmetric matrix, don't bother j>i coeffs
596 for (int i=nrefLoc[ip];i--;) { // Fill local matrix and vector
597 fVecBLoc[ indLoc[i] ] += weight*resid*derLoc[i];
7c3070ec 598 if (indLoc[i]>maxLocUsed) maxLocUsed = indLoc[i];
de34b538 599 for (int j=i+1;j--;) matCLoc(indLoc[i] ,indLoc[j]) += weight*derLoc[i]*derLoc[j];
7c3070ec 600 }
8a9ab0eb 601 //
602 } // end of the transfer of the measurement record to matrices
603 //
7c3070ec 604 matCLoc.SetSizeUsed(++maxLocUsed); // data with B=0 may use less than declared nLocals
605 //
f9efbbf6 606 /* //RRR
607 fRecord->Print("l");
608 printf("\nBefore\nLocalMatrix: "); matCLoc.Print("l");
609 printf("RHSLoc: "); for (int i=0;i<fNLocPar;i++) printf("%+e |",fVecBLoc[i]); printf("\n");
610 */
8a9ab0eb 611 // first try to solve by faster Cholesky decomposition, then by Gaussian elimination
de34b538 612 if (!matCLoc.SolveChol(fVecBLoc,kTRUE)) {
a8c5b94c 613 AliInfo("Failed to solve locals by Cholesky, trying Gaussian Elimination");
de34b538 614 if (!matCLoc.SolveSpmInv(fVecBLoc,kTRUE)) {
8a9ab0eb 615 AliInfo("Failed to solve locals by Gaussian Elimination, skip...");
de34b538 616 matCLoc.Print("d");
8a9ab0eb 617 return 0; // failed to solve
618 }
619 }
620 //
621 // If requested, store the track params and errors
f9efbbf6 622 //RRR printf("locfit: "); for (int i=0;i<fNLocPar;i++) printf("%+e |",fVecBLoc[i]); printf("\n");
623
7c3070ec 624 if (localParams) for (int i=maxLocUsed; i--;) {
8a9ab0eb 625 localParams[2*i] = fVecBLoc[i];
de34b538 626 localParams[2*i+1] = TMath::Sqrt(TMath::Abs(matCLoc.QueryDiag(i)));
8a9ab0eb 627 }
628 //
629 float lChi2 = 0;
630 int nEq = 0;
631 //
632 for (int ip=nPoints;ip--;) { // Calculate residuals
de34b538 633 double resid = fRecord->GetValue( refLoc[ip]-1 );
c9f619c7 634 double weight = fRecord->GetValue( refGlo[ip]-1 )*gloWgh;
635 int odd = (ip&0x1);
636 if (fWghScl[odd]>0) weight *= fWghScl[odd];
de34b538 637 double *derLoc = fRecord->GetValue()+refLoc[ip];
638 double *derGlo = fRecord->GetValue()+refGlo[ip];
639 int *indLoc = fRecord->GetIndex()+refLoc[ip];
640 int *indGlo = fRecord->GetIndex()+refGlo[ip];
8a9ab0eb 641 //
642 // Suppress local and global contribution in residuals;
de34b538 643 for (int i=nrefLoc[ip];i--;) resid -= derLoc[i]*fVecBLoc[ indLoc[i] ]; // local part
8a9ab0eb 644 //
de34b538 645 for (int i=nrefGlo[ip];i--;) { // global part
8a9ab0eb 646 int iID = indGlo[i];
9a919f12 647 if ( iID<0 || fSigmaPar[iID] <= 0.) continue; // fixed parameter RRRCheck
8a9ab0eb 648 if (fIsLinear[iID]) resid -= derGlo[i]*(fInitPar[iID]+fDeltaPar[iID]); // linear parameter
649 else resid -= derGlo[i]*fDeltaPar[iID]; // nonlinear parameter
650 }
651 //
652 // reject the track if the residual is too large (outlier)
de34b538 653 double absres = TMath::Abs(resid);
654 if ( (absres >= fResCutInit && fIter ==1 ) ||
655 (absres >= fResCut && fIter > 1)) {
656 if (fLocFitAdd) fNLocFitsRejected++;
cc9bec47 657 // printf("reject res %5ld %+e\n",fCurrRecDataID,resid);
8a9ab0eb 658 return 0;
659 }
660 //
661 lChi2 += weight*resid*resid ; // total chi^2
662 nEq++; // number of equations
663 } // end of Calculate residuals
664 //
a8c5b94c 665 lChi2 /= gloWgh;
7c3070ec 666 int nDoF = nEq-maxLocUsed;
8a9ab0eb 667 lChi2 = (nDoF>0) ? lChi2/nDoF : 0; // Chi^2/dof
668 //
669 if (fNStdDev != 0 && nDoF>0 && lChi2 > Chi2DoFLim(fNStdDev,nDoF)*fChi2CutFactor) { // check final chi2
de34b538 670 if (fLocFitAdd) fNLocFitsRejected++;
cc9bec47 671 // printf("reject chi2 %5ld: %+e\n",fCurrRecDataID, lChi2);
8a9ab0eb 672 return 0;
673 }
674 //
de34b538 675 if (fLocFitAdd) {
676 fNLocFits++;
677 fNLocEquations += nEq;
678 }
679 else {
680 fNLocFits--;
681 fNLocEquations -= nEq;
682 }
8a9ab0eb 683 //
684 // local operations are finished, track is accepted
685 // We now update the global parameters (other matrices)
686 //
687 int nGloInFit = 0;
688 //
689 for (int ip=nPoints;ip--;) { // Update matrices
de34b538 690 double resid = fRecord->GetValue( refLoc[ip]-1 );
c9f619c7 691 double weight = fRecord->GetValue( refGlo[ip]-1 )*gloWgh;
692 int odd = (ip&0x1);
693 if (fWghScl[odd]>0) weight *= fWghScl[odd];
de34b538 694 double *derLoc = fRecord->GetValue()+refLoc[ip];
695 double *derGlo = fRecord->GetValue()+refGlo[ip];
696 int *indLoc = fRecord->GetIndex()+refLoc[ip];
697 int *indGlo = fRecord->GetIndex()+refGlo[ip];
698 //
9a919f12 699 for (int i=nrefGlo[ip];i--;) { // suppress the global part
8a9ab0eb 700 int iID = indGlo[i]; // Global param indice
9a919f12 701 if ( iID<0 || fSigmaPar[iID] <= 0.) continue; // fixed parameter RRRCheck
de34b538 702 if (fIsLinear[iID]) resid -= derGlo[i]*(fInitPar[iID]+fDeltaPar[iID]); // linear parameter
703 else resid -= derGlo[i]*fDeltaPar[iID]; // nonlinear parameter
8a9ab0eb 704 }
705 //
de34b538 706 for (int ig=nrefGlo[ip];ig--;) {
8a9ab0eb 707 int iIDg = indGlo[ig]; // Global param indice (the matrix line)
9a919f12 708 if ( iIDg<0 || fSigmaPar[iIDg] <= 0.) continue; // fixed parameter RRRCheck
de34b538 709 if (fLocFitAdd) fVecBGlo[ iIDg ] += weight*resid*derGlo[ig]; //!!!
710 else fVecBGlo[ iIDg ] -= weight*resid*derGlo[ig]; //!!!
8a9ab0eb 711 //
712 // First of all, the global/global terms (exactly like local matrix)
de34b538 713 int nfill = 0;
714 for (int jg=ig+1;jg--;) { // matCGlo is symmetric by construction
8a9ab0eb 715 int jIDg = indGlo[jg];
9a919f12 716 if ( jIDg<0 || fSigmaPar[jIDg] <= 0.) continue; // fixed parameter RRRCheck
cc9bec47 717 if ( !IsZero(vl = weight*derGlo[ig]*derGlo[jg]) ) {
de34b538 718 fFillIndex[nfill] = jIDg;
719 fFillValue[nfill++] = fLocFitAdd ? vl:-vl;
720 }
721 }
722 if (nfill) matCGlo.AddToRow(iIDg,fFillValue,fFillIndex,nfill);
8a9ab0eb 723 //
724 // Now we have also rectangular matrices containing global/local terms.
725 int iCIDg = fGlo2CGlo[iIDg]; // compressed Index of index
726 if (iCIDg == -1) {
de34b538 727 Double_t *rowGL = matCGloLoc(nGloInFit);
7c3070ec 728 for (int k=maxLocUsed;k--;) rowGL[k] = 0.0; // reset the row
8a9ab0eb 729 iCIDg = fGlo2CGlo[iIDg] = nGloInFit;
730 fCGlo2Glo[nGloInFit++] = iIDg;
731 }
732 //
de34b538 733 Double_t *rowGLIDg = matCGloLoc(iCIDg);
734 for (int il=nrefLoc[ip];il--;) rowGLIDg[ indLoc[il] ] += weight*derGlo[ig]*derLoc[il];
735 fProcPnt[iIDg] += fLocFitAdd ? 1:-1; // update counter
8a9ab0eb 736 //
737 }
738 } // end of Update matrices
739 //
f9efbbf6 740 /*//RRR
741 printf("After GLO\n");
742 printf("MatCLoc: "); fMatCLoc->Print("l");
743 printf("MatCGlo: "); fMatCGlo->Print("l");
744 printf("MatCGlLc:"); fMatCGloLoc->Print("l");
745 printf("BGlo: "); for (int i=0; i<fNGloPar; i++) printf("%+e |",fVecBGlo[i]); printf("\n");
746 */
8a9ab0eb 747 // calculate fMatCGlo -= fMatCGloLoc * fMatCLoc * fMatCGloLoc^T
748 // and fVecBGlo -= fMatCGloLoc * fVecBLoc
749 //
de34b538 750 //-------------------------------------------------------------- >>>
8a9ab0eb 751 double vll;
752 for (int iCIDg=0; iCIDg<nGloInFit; iCIDg++) {
753 int iIDg = fCGlo2Glo[iCIDg];
754 //
755 vl = 0;
de34b538 756 Double_t *rowGLIDg = matCGloLoc(iCIDg);
7c3070ec 757 for (int kl=0;kl<maxLocUsed;kl++) if (rowGLIDg[kl]) vl += rowGLIDg[kl]*fVecBLoc[kl];
cc9bec47 758 if (!IsZero(vl)) fVecBGlo[iIDg] -= fLocFitAdd ? vl : -vl;
8a9ab0eb 759 //
de34b538 760 int nfill = 0;
8a9ab0eb 761 for (int jCIDg=0;jCIDg<=iCIDg; jCIDg++) {
762 int jIDg = fCGlo2Glo[jCIDg];
763 //
764 vl = 0;
de34b538 765 Double_t *rowGLJDg = matCGloLoc(jCIDg);
7c3070ec 766 for (int kl=0;kl<maxLocUsed;kl++) {
8a9ab0eb 767 // diag terms
cc9bec47 768 if ( (!IsZero(vll=rowGLIDg[kl]*rowGLJDg[kl])) ) vl += matCLoc.QueryDiag(kl)*vll;
8a9ab0eb 769 //
770 // off-diag terms
771 for (int ll=0;ll<kl;ll++) {
cc9bec47 772 if ( !IsZero(vll=rowGLIDg[kl]*rowGLJDg[ll]) ) vl += matCLoc(kl,ll)*vll;
773 if ( !IsZero(vll=rowGLIDg[ll]*rowGLJDg[kl]) ) vl += matCLoc(kl,ll)*vll;
8a9ab0eb 774 }
775 }
cc9bec47 776 if (!IsZero(vl)) {
de34b538 777 fFillIndex[nfill] = jIDg;
778 fFillValue[nfill++] = fLocFitAdd ? -vl : vl;
779 }
8a9ab0eb 780 }
de34b538 781 if (nfill) matCGlo.AddToRow(iIDg,fFillValue,fFillIndex,nfill);
8a9ab0eb 782 }
783 //
784 // reset compressed index array
785 //
f9efbbf6 786 /*//RRR
787 printf("After GLOLoc\n");
788 printf("MatCGlo: "); fMatCGlo->Print("");
789 printf("BGlo: "); for (int i=0; i<fNGloPar; i++) printf("%+e |",fVecBGlo[i]); printf("\n");
790 */
de34b538 791 for (int i=nGloInFit;i--;) {
792 fGlo2CGlo[ fCGlo2Glo[i] ] = -1;
793 fCGlo2Glo[i] = -1;
794 }
8a9ab0eb 795 //
de34b538 796 //---------------------------------------------------- <<<
8a9ab0eb 797 return 1;
798}
799
800//_____________________________________________________________________________________________
801Int_t AliMillePede2::GlobalFit(Double_t *par, Double_t *error, Double_t *pull)
802{
803 // performs a requested number of global iterations
804 fIter = 1;
805 //
806 TStopwatch sw; sw.Start();
807 //
808 int res = 0;
809 AliInfo("Starting Global fit.");
810 while (fIter<=fMaxIter) {
811 //
812 res = GlobalFitIteration();
813 if (!res) break;
814 //
cc9bec47 815 if (!IsZero(fChi2CutFactor-fChi2CutRef)) {
8a9ab0eb 816 fChi2CutFactor = TMath::Sqrt(fChi2CutFactor);
817 if (fChi2CutFactor < 1.2*fChi2CutRef) {
818 fChi2CutFactor = fChi2CutRef;
e30a812f 819 //RRR fIter = fMaxIter - 1; // Last iteration
8a9ab0eb 820 }
821 }
822 fIter++;
823 }
824 //
825 sw.Stop();
826 AliInfo(Form("Global fit %s, CPU time: %.1f",res ? "Converged":"Failed",sw.CpuTime()));
827 if (!res) return 0;
828 //
9a919f12 829 if (par) for (int i=fNGloParIni;i--;) par[i] = GetFinalParam(i);
8a9ab0eb 830 //
339fbe23 831 if (fGloSolveStatus==kInvert) { // errors on params are available
9a919f12 832 if (error) for (int i=fNGloParIni;i--;) error[i] = GetFinalError(i);
833 if (pull) for (int i=fNGloParIni;i--;) pull[i] = GetPull(i);
8a9ab0eb 834 }
835 //
836 return 1;
837}
838
839//_____________________________________________________________________________________________
840Int_t AliMillePede2::GlobalFitIteration()
841{
842 // perform global parameters fit once all the local equations have been fitted
843 //
844 AliInfo(Form("Global Fit Iteration#%2d (Local Fit Chi^2 cut factor: %.2f)",fIter,fChi2CutFactor));
845 //
846 if (!fNGloPar || !fTreeData) {
339fbe23 847 AliInfo("No data was stored, stopping iteration");
8a9ab0eb 848 return 0;
849 }
de34b538 850 TStopwatch sw,sws;
851 sw.Start();
852 sws.Stop();
8a9ab0eb 853 //
854 if (!fConstrUsed) {
855 fConstrUsed = new Bool_t[fNGloConstraints];
856 memset(fConstrUsed,0,fNGloConstraints*sizeof(Bool_t));
857 }
858 // Reset all info specific for this step
de34b538 859 AliMatrixSq& matCGlo = *fMatCGlo;
860 matCGlo.Reset();
8a9ab0eb 861 memset(fProcPnt,0,fNGloPar*sizeof(Int_t));
862 //
863 fNGloConstraints = fTreeConstr ? fTreeConstr->GetEntries() : 0;
864 //
de34b538 865 // count number of Lagrange constraints: they need new row/cols to be added
866 fNLagrangeConstraints = 0;
867 for (int i=0; i<fNGloConstraints; i++) {
868 ReadRecordConstraint(i);
cc9bec47 869 if ( IsZero(fRecord->GetValue(1)) ) fNLagrangeConstraints++; // exact constraint (no error) -> Lagrange multiplier
de34b538 870 }
871 //
8a9ab0eb 872 // if needed, readjust the size of the global vector (for matrices this is done automatically)
de34b538 873 if (!fVecBGlo || fNGloSize!=fNGloPar+fNLagrangeConstraints) {
8a9ab0eb 874 delete[] fVecBGlo; // in case some constraint was added between the two manual iterations
de34b538 875 fNGloSize = fNGloPar+fNLagrangeConstraints;
8a9ab0eb 876 fVecBGlo = new Double_t[fNGloSize];
877 }
878 memset(fVecBGlo,0,fNGloSize*sizeof(double));
879 //
880 fNLocFits = 0;
881 fNLocFitsRejected = 0;
de34b538 882 fNLocEquations = 0;
8a9ab0eb 883 //
884 // Process data records and build the matrices
885 Long_t ndr = fTreeData->GetEntries();
e30a812f 886 Long_t first = fSelFirst>0 ? fSelFirst : 0;
887 Long_t last = fSelLast<1 ? ndr : (fSelLast>=ndr ? ndr : fSelLast+Long_t(1));
888 ndr = last - first;
889 //
73bbf779 890 AliInfo(Form("Building the Global matrix from data records %ld : %ld",first,last));
e30a812f 891 if (ndr<1) return 0;
de34b538 892 //
893 TStopwatch swt; swt.Start();
894 fLocFitAdd = kTRUE; // add contributions of matching tracks
8a9ab0eb 895 for (Long_t i=0;i<ndr;i++) {
e30a812f 896 Long_t iev = i+first;
897 ReadRecordData(iev);
898 if (!IsRecordAcceptable()) continue;
8a9ab0eb 899 LocalFit();
7c3070ec 900 if ( (i%int(0.2*ndr)) == 0) printf("%.1f%% of local fits done\n", double(100.*i)/ndr);
8a9ab0eb 901 }
de34b538 902 swt.Stop();
903 printf("%ld local fits done: ", ndr);
f9efbbf6 904 /*
905 printf("MatCGlo: "); fMatCGlo->Print("l");
906 printf("BGlo: "); for (int i=0; i<fNGloPar; i++) printf("%+e |",fVecBGlo[i]); printf("\n");
de34b538 907 swt.Print();
f9efbbf6 908 */
de34b538 909 sw.Start(kFALSE);
910 //
8a9ab0eb 911 //
de34b538 912 // ---------------------- Reject parameters with low statistics ------------>>
8a9ab0eb 913 fNGloFix = 0;
de34b538 914 if (fMinPntValid>1 && fNGroupsSet) {
915 //
916 printf("Checking parameters with statistics < %d\n",fMinPntValid);
917 TStopwatch swsup;
918 swsup.Start();
919 // 1) build the list of parameters to fix
920 Int_t fixArrSize = 10;
921 Int_t nFixedGroups = 0;
922 TArrayI fixGroups(fixArrSize);
923 //
91e1aa2c 924 int grIDold = -2;
925 int oldStart = -1;
926 double oldMin = 1.e20;
927 double oldMax =-1.e20;
928 //
de34b538 929 for (int i=fNGloPar;i--;) { // // Reset row and column of fixed params and add 1/sig^2 to free ones
930 int grID = fParamGrID[i];
931 if (grID<0) continue; // not in the group
91e1aa2c 932 //
933 if (grID!=grIDold) { // starting new group
934 if (grIDold>=0) { // decide if the group has enough statistics
935 if (oldMin<fMinPntValid && oldMax<2*fMinPntValid) { // suppress group
936 for (int iold=oldStart;iold>i;iold--) fProcPnt[iold] = 0;
937 Bool_t fnd = kFALSE; // check if the group is already accounted
938 for (int j=nFixedGroups;j--;) if (fixGroups[j]==grIDold) {fnd=kTRUE; break;}
939 if (!fnd) {
940 if (nFixedGroups>=fixArrSize) {fixArrSize*=2; fixGroups.Set(fixArrSize);}
941 fixGroups[nFixedGroups++] = grIDold; // add group to fix
942 }
943 }
944 }
945 grIDold = grID; // mark the start of the new group
946 oldStart = i;
947 oldMin = 1.e20;
948 oldMax = -1.e20;
949 }
950 if (oldMin>fProcPnt[i]) oldMin = fProcPnt[i];
951 if (oldMax<fProcPnt[i]) oldMax = fProcPnt[i];
de34b538 952 //
953 }
91e1aa2c 954 // extra check for the last group
955 if (grIDold>=0 && oldMin<fMinPntValid && oldMax<2*fMinPntValid) { // suppress group
956 for (int iold=oldStart;iold--;) fProcPnt[iold] = 0;
957 Bool_t fnd = kFALSE; // check if the group is already accounted
958 for (int j=nFixedGroups;j--;) if (fixGroups[j]==grIDold) {fnd=kTRUE; break;}
959 if (!fnd) {
960 if (nFixedGroups>=fixArrSize) {fixArrSize*=2; fixGroups.Set(fixArrSize);}
961 fixGroups[nFixedGroups++] = grIDold; // add group to fix
962 }
963 }
964 //
de34b538 965 // 2) loop over records and add contributions of fixed groups with negative sign
966 fLocFitAdd = kFALSE;
967 //
968 for (Long_t i=0;i<ndr;i++) {
e30a812f 969 Long_t iev = i+first;
970 ReadRecordData(iev);
971 if (!IsRecordAcceptable()) continue;
de34b538 972 Bool_t suppr = kFALSE;
973 for (int ifx=nFixedGroups;ifx--;)if (fRecord->IsGroupPresent(fixGroups[ifx])) suppr = kTRUE;
974 if (suppr) LocalFit();
975 }
976 fLocFitAdd = kTRUE;
977 //
978 if (nFixedGroups) {
979 printf("Suppressed contributions of groups with NPoints<%d :\n",fMinPntValid);
980 for (int i=0;i<nFixedGroups;i++) printf("%d ",fixGroups[i]); printf("\n");
981 }
982 swsup.Stop();
983 swsup.Print();
984 }
985 // ---------------------- Reject parameters with low statistics ------------<<
986 //
987 // add large number to diagonal of fixed params
8a9ab0eb 988 //
8a9ab0eb 989 for (int i=fNGloPar;i--;) { // // Reset row and column of fixed params and add 1/sig^2 to free ones
7c3070ec 990 // printf("#%3d : Nproc : %5d grp: %d\n",i,fProcPnt[i],fParamGrID[i]);
de34b538 991 if (fProcPnt[i]<1) {
8a9ab0eb 992 fNGloFix++;
8a9ab0eb 993 fVecBGlo[i] = 0.;
a8c5b94c 994 matCGlo.DiagElem(i) = 1.;//float(fNLocEquations*fNLocEquations);
e30a812f 995 // matCGlo.DiagElem(i) = float(fNLocEquations*fNLocEquations);
8a9ab0eb 996 }
de34b538 997 else matCGlo.DiagElem(i) += (fgWeightSigma ? fProcPnt[i] : 1.)/(fSigmaPar[i]*fSigmaPar[i]);
8a9ab0eb 998 }
999 //
de34b538 1000 for (int i=fNGloPar;i--;) fDiagCGlo[i] = matCGlo.QueryDiag(i); // save the diagonal elements
1001 //
8a9ab0eb 1002 // add constraint equations
1003 int nVar = fNGloPar; // Current size of global matrix
1004 for (int i=0; i<fNGloConstraints; i++) {
1005 ReadRecordConstraint(i);
1006 double val = fRecord->GetValue(0);
de34b538 1007 double sig = fRecord->GetValue(1);
8a9ab0eb 1008 int *indV = fRecord->GetIndex()+2;
1009 double *der = fRecord->GetValue()+2;
1010 int csize = fRecord->GetSize()-2;
1011 //
9a919f12 1012 if (fkReGroup) {
1013 for (int jp=csize;jp--;) {
1014 int idp = indV[jp];
1015 if (fkReGroup[idp]<0) AliFatal(Form("Constain is requested for suppressed parameter #%d",indV[jp]));
1016 indV[jp] = idp;
1017 }
1018 }
de34b538 1019 // check if after suppression of fixed variables there are non-0 derivatives
1020 // and determine the max statistics of involved params
1021 int nSuppressed = 0;
1022 int maxStat = 1;
1023 for (int j=csize;j--;) {
1024 if (fProcPnt[indV[j]]<1) nSuppressed++;
1025 else {
1026 maxStat = TMath::Max(maxStat,fProcPnt[indV[j]]);
1027 }
1028 }
8a9ab0eb 1029 //
de34b538 1030 if (nSuppressed==csize) {
1031 // AliInfo(Form("Neglecting constraint %d of %d derivatives since no free parameters left",i,csize));
8a9ab0eb 1032 //
1033 // was this constraint ever created ?
de34b538 1034 if ( sig==0 && fConstrUsed[i] ) { // this is needed only for constraints with Lagrange multiplier
8a9ab0eb 1035 // to avoid empty row impose dummy constraint on "Lagrange multiplier"
de34b538 1036 matCGlo.DiagElem(nVar) = 1.;
8a9ab0eb 1037 fVecBGlo[nVar++] = 0;
1038 }
1039 continue;
1040 }
1041 //
de34b538 1042 // account for already accumulated corrections
1043 for (int j=csize; j--;) val -= der[j]*(fInitPar[ indV[j] ]+fDeltaPar[ indV[j] ]);
8a9ab0eb 1044 //
de34b538 1045 if (sig > 0) { // this is a gaussian constriant: no Lagrange multipliers are added
1046 //
1047 double sig2i = (fgWeightSigma ? TMath::Sqrt(maxStat) : 1.)/sig/sig;
1048 for (int ir=0;ir<csize;ir++) {
1049 int iID = indV[ir];
1050 for (int ic=0;ic<=ir;ic++) { // matrix is symmetric
1051 int jID = indV[ic];
1052 double vl = der[ir]*der[ic]*sig2i;
cc9bec47 1053 if (!IsZero(vl)) matCGlo(iID,jID) += vl;
de34b538 1054 }
1055 fVecBGlo[iID] += val*der[ir]*sig2i;
1056 }
1057 }
1058 else { // this is exact constriant: Lagrange multipliers must be added
1059 for (int j=csize; j--;) {
1060 int jID = indV[j];
1061 if (fProcPnt[jID]<1) continue; // this parameter was fixed, don't put it into constraint
1062 matCGlo(nVar,jID) = float(fNLocEquations)*der[j]; // fMatCGlo is symmetric, only lower triangle is filled
1063 }
1064 //
1065 if (matCGlo.QueryDiag(nVar)) matCGlo.DiagElem(nVar) = 0.0;
1066 fVecBGlo[nVar++] = float(fNLocEquations)*val; //RS ? should we use here fNLocFits ?
1067 fConstrUsed[i] = kTRUE;
1068 }
8a9ab0eb 1069 }
1070 //
1071 AliInfo(Form("Obtained %-7ld equations from %-7ld records (%-7ld rejected). Fixed %-4d globals",
1072 fNLocEquations,fNLocFits,fNLocFitsRejected,fNGloFix));
1073
1074 //
de34b538 1075 sws.Start();
f9efbbf6 1076
e041af50 1077#ifdef _DUMP_EQ_BEFORE_
1078 const char* faildumpB = Form("mp2eq_before%d.dat",fIter);
1079 int defoutB = dup(1);
c8396ea8 1080 if (defoutB<0) {AliFatal("Failed on dup"); exit(1);}
e041af50 1081 int slvDumpB = open(faildumpB, O_RDWR|O_CREAT, 0666);
1082 if (slvDumpB>=0) {
1083 dup2(slvDumpB,1);
1084 printf("Solving%d for %d params\n",fIter,fNGloSize);
1085 matCGlo.Print("10");
1086 for (int i=0;i<fNGloSize;i++) printf("b%2d : %+.10f\n",i,fVecBGlo[i]);
1087 }
1088 dup2(defoutB,1);
1089 close(slvDumpB);
c8396ea8 1090 close(defoutB);
1091
e041af50 1092#endif
f9efbbf6 1093 /*
1094 printf("Solving:\n");
ebf239ae 1095 matCGlo.Print("l");
f9efbbf6 1096 for (int i=0;i<fNGloSize;i++) printf("b%2d : %+e\n",i,fVecBGlo[i]);
1097 */
c9f619c7 1098#ifdef _DUMPEQ_BEFORE_
1099 const char* faildumpB = Form("mp2eq_before%d.dat",fIter);
1100 int defoutB = dup(1);
1101 int slvDumpB = open(faildumpB, O_RDWR|O_CREAT, 0666);
1102 dup2(slvDumpB,1);
1103 //
1104 printf("#Equation before step %d\n",fIter);
1105 fMatCGlo->Print("10");
1106 printf("#RHS/STAT : NGlo:%d NGloSize:%d\n",fNGloPar,fNGloSize);
1107 for (int i=0;i<fNGloSize;i++) printf("%d %+.10f %d\n",i,fVecBGlo[i],fProcPnt[i]);
1108 //
1109 dup2(defoutB,1);
1110 close(slvDumpB);
c8396ea8 1111 close(defoutB);
c9f619c7 1112#endif
1113 //
8a9ab0eb 1114 fGloSolveStatus = SolveGlobalMatEq(); // obtain solution for this step
c9f619c7 1115#ifdef _DUMPEQ_AFTER_
1116 const char* faildumpA = Form("mp2eq_after%d.dat",fIter);
1117 int defoutA = dup(1);
1118 int slvDumpA = open(faildumpA, O_RDWR|O_CREAT, 0666);
1119 dup2(slvDumpA,1);
1120 //
1121 printf("#Matrix after step %d\n",fIter);
1122 fMatCGlo->Print("10");
1123 printf("#RHS/STAT : NGlo:%d NGloSize:%d\n",fNGloPar,fNGloSize);
1124 for (int i=0;i<fNGloSize;i++) printf("%d %+.10f %d\n",i,fVecBGlo[i],fProcPnt[i]);
1125 //
1126 dup2(defoutA,1);
1127 close(slvDumpA);
c8396ea8 1128 close(defoutA);
c9f619c7 1129#endif
1130 //
de34b538 1131 sws.Stop();
1132 printf("Solve %d |",fIter); sws.Print();
8a9ab0eb 1133 //
1134 sw.Stop();
339fbe23 1135 AliInfo(Form("Iteration#%2d %s. CPU time: %.1f",fIter,fGloSolveStatus==kFailed ? "Failed":"Converged",sw.CpuTime()));
1136 if (fGloSolveStatus==kFailed) return 0;
8a9ab0eb 1137 //
1138 for (int i=fNGloPar;i--;) fDeltaPar[i] += fVecBGlo[i]; // Update global parameters values (for iterations)
e041af50 1139
1140#ifdef _DUMP_EQ_AFTER_
1141 const char* faildumpA = Form("mp2eq_after%d.dat",fIter);
1142 int defoutA = dup(1);
c8396ea8 1143 if (defoutA<0) {AliFatal("Failed on dup"); exit(1);}
e041af50 1144 int slvDumpA = open(faildumpA, O_RDWR|O_CREAT, 0666);
1145 if (slvDumpA>=0) {
1146 dup2(slvDumpA,1);
1147 printf("Solving%d for %d params\n",fIter,fNGloSize);
1148 matCGlo.Print("10");
1149 for (int i=0;i<fNGloSize;i++) printf("b%2d : %+.10f\n",i,fVecBGlo[i]);
1150 }
1151 dup2(defoutA,1);
1152 close(slvDumpA);
c8396ea8 1153 close(defoutA);
e041af50 1154#endif
8a9ab0eb 1155 //
ebf239ae 1156 /*
1157 printf("Solved:\n");
1158 matCGlo.Print("l");
1159 for (int i=0;i<fNGloSize;i++) printf("b%2d : %+e (->%+e)\n",i,fVecBGlo[i], fDeltaPar[i]);
1160 */
1161
c9f619c7 1162 PrintGlobalParameters();
8a9ab0eb 1163 return 1;
1164}
1165
1166//_____________________________________________________________________________________________
1167Int_t AliMillePede2::SolveGlobalMatEq()
1168{
1169 //
1170 // solve global matrix equation MatCGlob*X=VecBGlo and store the result in the VecBGlo
1171 //
de34b538 1172 /*
1173 printf("GlobalMatrix\n");
ebf239ae 1174 fMatCGlo->Print("l");
de34b538 1175 printf("RHS\n");
1176 for (int i=0;i<fNGloPar;i++) printf("%d %+e\n",i,fVecBGlo[i]);
1177 */
1178 //
8a9ab0eb 1179 if (!fgIsMatGloSparse) {
1180 //
de34b538 1181 if (fNLagrangeConstraints==0) { // pos-def systems are faster to solve by Cholesky
339fbe23 1182 if ( ((AliSymMatrix*)fMatCGlo)->SolveChol(fVecBGlo, fgInvChol) ) return fgInvChol ? kInvert:kNoInversion;
8a9ab0eb 1183 else AliInfo("Solution of Global Dense System by Cholesky failed, trying Gaussian Elimiation");
1184 }
1185 //
339fbe23 1186 if (((AliSymMatrix*)fMatCGlo)->SolveSpmInv(fVecBGlo, kTRUE)) return kInvert;
e30a812f 1187 else AliInfo("Solution of Global Dense System by Gaussian Elimination failed, trying iterative methods");
8a9ab0eb 1188 }
1189 // try to solve by minres
de34b538 1190 TVectorD sol(fNGloSize);
8a9ab0eb 1191 //
1192 AliMinResSolve *slv = new AliMinResSolve(fMatCGlo,fVecBGlo);
339fbe23 1193 if (!slv) return kFailed;
8a9ab0eb 1194 //
1195 Bool_t res = kFALSE;
1196 if (fgIterSol == AliMinResSolve::kSolMinRes)
de34b538 1197 res = slv->SolveMinRes(sol,fgMinResCondType,fgMinResMaxIter,fgMinResTol);
8a9ab0eb 1198 else if (fgIterSol == AliMinResSolve::kSolFGMRes)
de34b538 1199 res = slv->SolveFGMRES(sol,fgMinResCondType,fgMinResMaxIter,fgMinResTol,fgNKrylovV);
8a9ab0eb 1200 else
1201 AliInfo(Form("Undefined Iteritive Solver ID=%d, only %d are defined",fgIterSol,AliMinResSolve::kNSolvers));
1202 //
e30a812f 1203 if (!res) {
1204 const char* faildump = "fgmr_failed.dat";
1205 int defout = dup(1);
c8f37c50 1206 if (defout<0) {
1207 AliInfo("Failed on dup");
339fbe23 1208 return kFailed;
c8f37c50 1209 }
642724dc 1210 int slvDump = open(faildump, O_RDWR|O_CREAT, 0666);
f9efbbf6 1211 if (slvDump>=0) {
1212 dup2(slvDump,1);
1213 //
1214 printf("#Failed to solve using solver %d with PreCond: %d MaxIter: %d Tol: %e NKrylov: %d\n",
1215 fgIterSol,fgMinResCondType,fgMinResMaxIter,fgMinResTol,fgNKrylovV);
1216 printf("#Dump of matrix:\n");
1217 fMatCGlo->Print("10");
1218 printf("#Dump of RHS:\n");
1219 for (int i=0;i<fNGloSize;i++) printf("%d %+.10f\n",i,fVecBGlo[i]);
1220 //
1221 dup2(defout,1);
1222 close(slvDump);
c8396ea8 1223 close(defout);
f9efbbf6 1224 printf("#Dumped failed matrix and RHS to %s\n",faildump);
1225 }
1226 else AliInfo("Failed on file open for matrix dumping");
4c234df8 1227 close(defout);
339fbe23 1228 return kFailed;
e30a812f 1229 }
de34b538 1230 for (int i=fNGloSize;i--;) fVecBGlo[i] = sol[i];
c9f619c7 1231 //
339fbe23 1232 return kNoInversion;
8a9ab0eb 1233 //
1234}
1235
1236//_____________________________________________________________________________________________
1237Float_t AliMillePede2::Chi2DoFLim(int nSig, int nDoF) const
1238{
1239 /// return the limit in chi^2/nd for n sigmas stdev authorized
1240 // Only n=1, 2, and 3 are expected in input
1241 int lNSig;
1242 float sn[3] = {0.47523, 1.690140, 2.782170};
1243 float table[3][30] = {{1.0000, 1.1479, 1.1753, 1.1798, 1.1775, 1.1730, 1.1680, 1.1630,
1244 1.1581, 1.1536, 1.1493, 1.1454, 1.1417, 1.1383, 1.1351, 1.1321,
1245 1.1293, 1.1266, 1.1242, 1.1218, 1.1196, 1.1175, 1.1155, 1.1136,
1246 1.1119, 1.1101, 1.1085, 1.1070, 1.1055, 1.1040},
1247 {4.0000, 3.0900, 2.6750, 2.4290, 2.2628, 2.1415, 2.0481, 1.9736,
1248 1.9124, 1.8610, 1.8171, 1.7791, 1.7457, 1.7161, 1.6897, 1.6658,
1249 1.6442, 1.6246, 1.6065, 1.5899, 1.5745, 1.5603, 1.5470, 1.5346,
1250 1.5230, 1.5120, 1.5017, 1.4920, 1.4829, 1.4742},
1251 {9.0000, 5.9146, 4.7184, 4.0628, 3.6410, 3.3436, 3.1209, 2.9468,
1252 2.8063, 2.6902, 2.5922, 2.5082, 2.4352, 2.3711, 2.3143, 2.2635,
1253 2.2178, 2.1764, 2.1386, 2.1040, 2.0722, 2.0428, 2.0155, 1.9901,
1254 1.9665, 1.9443, 1.9235, 1.9040, 1.8855, 1.8681}};
1255
1256 if (nDoF < 1) {
1257 return 0.0;
1258 }
1259 else {
1260 lNSig = TMath::Max(1,TMath::Min(nSig,3));
1261
1262 if (nDoF <= 30) {
1263 return table[lNSig-1][nDoF-1];
1264 }
1265 else { // approximation
1266 return ((sn[lNSig-1]+TMath::Sqrt(float(2*nDoF-3)))*
1267 (sn[lNSig-1]+TMath::Sqrt(float(2*nDoF-3))))/float(2*nDoF-2);
1268 }
1269 }
1270}
1271
1272//_____________________________________________________________________________________________
1273Int_t AliMillePede2::SetIterations(double lChi2CutFac)
1274{
1275 // Number of iterations is calculated from lChi2CutFac
1276 fChi2CutFactor = TMath::Max(1.0, lChi2CutFac);
1277 //
1278 AliInfo(Form("Initial cut factor is %f",fChi2CutFactor));
1279 fIter = 1; // Initializes the iteration process
1280 return 1;
1281}
1282
1283//_____________________________________________________________________________________________
1284Double_t AliMillePede2::GetParError(int iPar) const
1285{
1286 // return error for parameter iPar
339fbe23 1287 if (fGloSolveStatus==kInvert) {
9a919f12 1288 if (fkReGroup) iPar = fkReGroup[iPar];
f91a16b5 1289 if (iPar<0) {
1290 // AliDebug(2,Form("Parameter %d was suppressed in the regrouping",iPar));
1291 return 0;
1292 }
de34b538 1293 double res = fMatCGlo->QueryDiag(iPar);
8a9ab0eb 1294 if (res>=0) return TMath::Sqrt(res);
1295 }
9a919f12 1296 return 0.;
1297}
1298
1299//_____________________________________________________________________________________________
1300Double_t AliMillePede2::GetPull(int iPar) const
1301{
1302 // return pull for parameter iPar
1303 if (fGloSolveStatus==kInvert) {
1304 if (fkReGroup) iPar = fkReGroup[iPar];
f91a16b5 1305 if (iPar<0) {
1306 // AliDebug(2,Form("Parameter %d was suppressed in the regrouping",iPar));
1307 return 0;
1308 }
9a919f12 1309 //
1310 return fProcPnt[iPar]>0 && (fSigmaPar[iPar]*fSigmaPar[iPar]-fMatCGlo->QueryDiag(iPar))>0. && fSigmaPar[iPar]>0
1311 ? fDeltaPar[iPar]/TMath::Sqrt(fSigmaPar[iPar]*fSigmaPar[iPar]-fMatCGlo->QueryDiag(iPar)) : 0;
1312 }
1313 return 0.;
8a9ab0eb 1314}
1315
1316
1317//_____________________________________________________________________________________________
1318Int_t AliMillePede2::PrintGlobalParameters() const
1319{
1320 /// Print the final results into the logfile
1321 double lError = 0.;
1322 double lGlobalCor =0.;
1323
f91a16b5 1324 printf("\nMillePede2 output\n");
1325 printf(" Result of fit for global parameters\n");
1326 printf(" ===================================\n");
1327 printf(" I initial final differ lastcor error gcor Npnt\n");
1328 printf("----------------------------------------------------------------------------------------------\n");
8a9ab0eb 1329 //
f91a16b5 1330 int lastPrintedId = -1;
9a919f12 1331 for (int i0=0; i0<fNGloParIni; i0++) {
1332 int i = GetRGId(i0); if (i<0) continue;
f91a16b5 1333 if (i!=i0 && lastPrintedId>=0 && i<=lastPrintedId) continue; // grouped param
1334 lastPrintedId = i;
1335 lError = GetParError(i0);
8a9ab0eb 1336 lGlobalCor = 0.0;
1337 //
1338 double dg;
339fbe23 1339 if (fGloSolveStatus==kInvert && TMath::Abs( (dg=fMatCGlo->QueryDiag(i)) *fDiagCGlo[i]) > 0) {
8a9ab0eb 1340 lGlobalCor = TMath::Sqrt(TMath::Abs(1.0-1.0/(dg*fDiagCGlo[i])));
f91a16b5 1341 printf("%4d(%4d)\t %+.6f\t %+.6f\t %+.6f\t %.6f\t %.6f\t %.6f\t %6d\n",
1342 i,i0,fInitPar[i],fInitPar[i]+fDeltaPar[i],fDeltaPar[i],fVecBGlo[i],lError,lGlobalCor,fProcPnt[i]);
8a9ab0eb 1343 }
1344 else {
f91a16b5 1345 printf("%4d (%4d)\t %+.6f\t %+.6f\t %+.6f\t %.6f\t OFF\t OFF\t %6d\n",i,i0,fInitPar[i],fInitPar[i]+fDeltaPar[i],
1346 fDeltaPar[i],fVecBGlo[i],fProcPnt[i]);
8a9ab0eb 1347 }
1348 }
1349 return 1;
1350}
e30a812f 1351
1352//_____________________________________________________________________________________________
1f6eade8 1353Bool_t AliMillePede2::IsRecordAcceptable()
e30a812f 1354{
1355 // validate record according run lists set by the user
1a39bef4 1356 static Long_t prevRunID = kMaxInt;
e30a812f 1357 static Bool_t prevAns = kTRUE;
1358 Long_t runID = fRecord->GetRunID();
1359 if (runID!=prevRunID) {
1360 int n = 0;
1f6eade8 1361 fRunWgh = 1.;
e30a812f 1362 prevRunID = runID;
1363 // is run to be rejected?
1364 if (fRejRunList && (n=fRejRunList->GetSize())) {
1365 prevAns = kTRUE;
1366 for (int i=n;i--;) if (runID == (*fRejRunList)[i]) {
1367 prevAns = kFALSE;
7fb585bc 1368 AliInfo(Form("New Run to reject: %ld",runID));
e30a812f 1369 break;
1370 }
1371 }
1372 else if (fAccRunList && (n=fAccRunList->GetSize())) { // is run specifically selected
1373 prevAns = kFALSE;
7fb585bc 1374 for (int i=n;i--;) if (runID == (*fAccRunList)[i]) {
1375 prevAns = kTRUE;
1376 if (fAccRunListWgh) fRunWgh = (*fAccRunListWgh)[i];
1377 AliInfo(Form("New Run to accept explicitly: %ld, weight=%f",runID,fRunWgh));
1378 break;
1379 }
1380 if (!prevAns) AliInfo(Form("New Run is not in the list to accept: %ld",runID));
e30a812f 1381 }
1382 }
1383 //
1384 return prevAns;
1385 //
1386}
1387
1388//_____________________________________________________________________________________________
1389void AliMillePede2::SetRejRunList(const UInt_t *runs, Int_t nruns)
1390{
1391 // set the list of runs to be rejected
1392 if (fRejRunList) delete fRejRunList;
1393 fRejRunList = 0;
1394 if (nruns<1 || !runs) return;
1395 fRejRunList = new TArrayL(nruns);
1396 for (int i=0;i<nruns;i++) (*fRejRunList)[i] = runs[i];
1397}
1398
1399//_____________________________________________________________________________________________
1f6eade8 1400void AliMillePede2::SetAccRunList(const UInt_t *runs, Int_t nruns, const Float_t* wghList)
e30a812f 1401{
1402 // set the list of runs to be selected
1403 if (fAccRunList) delete fAccRunList;
1f6eade8 1404 if (fAccRunListWgh) delete fAccRunListWgh;
e30a812f 1405 fAccRunList = 0;
1406 if (nruns<1 || !runs) return;
1407 fAccRunList = new TArrayL(nruns);
1f6eade8 1408 fAccRunListWgh = new TArrayF(nruns);
1409 for (int i=0;i<nruns;i++) {
1410 (*fAccRunList)[i] = runs[i];
1411 (*fAccRunListWgh)[i] =wghList ? wghList[i] : 1.0;
1412 }
e30a812f 1413}
9a919f12 1414
1415//_____________________________________________________________________________________________
1416void AliMillePede2::SetInitPars(const Double_t* par)
1417{
1418 // initialize parameters, account for eventual grouping
1419 for (int i=0;i<fNGloParIni;i++) {
1420 int id = GetRGId(i); if (id<0) continue;
1421 fInitPar[id] = par[i];
1422 }
1423}
1424
1425//_____________________________________________________________________________________________
1426void AliMillePede2::SetSigmaPars(const Double_t* par)
1427{
1428 // initialize sigmas, account for eventual grouping
1429 for (int i=0;i<fNGloParIni;i++) {
1430 int id = GetRGId(i); if (id<0) continue;
1431 fSigmaPar[id] = par[i];
1432 }
1433}
1434
1435//_____________________________________________________________________________________________
1436void AliMillePede2::SetInitPar(Int_t i,Double_t par)
1437{
1438 // initialize param, account for eventual grouping
1439 int id = GetRGId(i); if (id<0) return;
1440 fInitPar[id] = par;
1441}
1442
1443//_____________________________________________________________________________________________
1444void AliMillePede2::SetSigmaPar(Int_t i,Double_t par)
1445{
1446 // initialize sigma, account for eventual grouping
1447 int id = GetRGId(i); if (id<0) return;
1448 fSigmaPar[id] = par;
1449}
1450
1451