/* EstimateModel: top level of iterative estimation process */
void EstimateModel(void)
{
LogFloat totalP,newP,delta;
Boolean converged = FALSE;
int i,iter,numSegs,segLen;
IntVec states; /* array[1..numSegs] of State */
IntVec *mixes; /* array[1..S][1..numSegs] of MixComp */
if (trace&T_TOP) printf("Starting Estimation Process\n");
if (newModel){
UniformSegment();
}
totalP=LZERO;
for (iter=1; !converged && iter<=maxIter; iter++){
ZeroAccs(&hset, uFlags); /* Clear all accumulators */
numSegs = NumSegs(segStore);
/* Align on each training segment and accumulate stats */
for (newP=0.0,i=1;i<=numSegs;i++) {
segLen = SegLength(segStore,i);
states = CreateIntVec(&gstack,segLen);
mixes = (hset.hsKind==DISCRETEHS)?NULL:
CreateMixes(&gstack,segLen);
newP += ViterbiAlign(i,segLen,states,mixes);
if (trace&T_ALN) ShowAlignment(i,segLen,states,mixes);
UpdateCounts(i,segLen,states,mixes);
FreeIntVec(&gstack,states); /* disposes mixes too */
}
/* Update parameters or quit */
newP /= (float)numSegs;
delta = newP - totalP;
converged = (iter>1) && (fabs(delta) < epsilon);
if (!converged)
UpdateParameters();
totalP = newP;
if (trace & T_TOP){
printf("Iteration %d: Average LogP =%12.5f",iter,totalP);
if (iter > 1)
printf(" Change =%12.5f\n",delta);
else
printf("\n");
fflush(stdout);
}
}
if (trace&T_TOP) {
if (converged)
printf("Estimation converged at iteration %d\n",iter);
else
printf("Estimation aborted at iteration %d\n",iter);
fflush(stdout);
}
}
void Initialise(char *hmmListFn)
{
/* Stacks for global structures requiring memory allocation */
CreateHeap(&aSetStack,"ASetStore", MSTAK, 1, 0.0, 1000, 1000);
CreateHeap(&sSetStack,"SSetStore", MSTAK, 1, 0.0, 1000, 1000);
CreateHeap(&wsStack,"WsStore", MSTAK, 1, 0.0, 1000, 1000);
CreateHeap(&labIdStack,"LabIdStore", MSTAK, 1, 0.0, 1000, 1000);
CreateHeap(&wtAccStack,"WtAccStore", MSTAK, 1, 0.0, 1000, 1000);
/* Load HMMs and init HMMSet related global variables */
if(MakeHMMSet( &hset, hmmListFn )<SUCCESS)
HError(2429,"Initialise: MakeHMMSet failed");
if(LoadHMMSet( &hset,hmmDir,newExt)<SUCCESS)
HError(2429,"Initialise: LoadHMMSet failed");
AttachAccs(&hset, &gstack,uFlags);
ZeroAccs(&hset,uFlags);
nPhyHmms = hset.numPhyHMM;
nLogHmms = hset.numLogHMM;
vSize = hset.vecSize;
nStreams = hset.swidth[0];
maxMixes = MaxMixInSet(&hset);
maxStates = MaxStatesInSet(&hset);
hsKind = hset.hsKind;
/* Store for mix weights accs from each input acc file */
CreateWtStore(&wtAccStack);
if ((hsKind != TIEDHS) && (hsKind != DISCRETEHS))
HError(2421,"Initialise: HMM's must be full Tied Mixture or Discrete");
if (trace&T_TOP) {
printf("HSmooth Updating: ");
if (uFlags&UPTRANS) printf("Transitions ");
if (uFlags&UPMEANS) printf("Means ");
if (uFlags&UPVARS) printf("Variances ");
if (uFlags&UPMIXES && maxMixes>1) printf("MixWeights ");
printf("\n ");
printf(" Max Steps: %d, Epsilon : %f, Max Mixes: %d\n",
maxStep,epsilon,maxMixes);
printf("%d Logical/%d Physical Models Loaded, VecSize=%d\n",nLogHmms,nPhyHmms,vSize);
fflush(stdout);
}
SetVFloor( &hset, vFloor, minVar);
aSet=(HLink *)New(&aSetStack, nPhyHmms*sizeof(HLink));
--aSet;
sSet=(StreamElem **)New(&sSetStack, nPhyHmms*sizeof(StreamElem *));
--sSet;
}
xf = xfInfo.paXForm;
if ((xfInfo.paXForm != NULL) && !(uFlags&UPXFORM)) {
while (xf != NULL) {
if ((xf->xformSet->xkind != CMLLR) && (xf->xformSet->xkind != SEMIT))
HError(999,"SAT only supported with SEMIT/CMLLR transforms");
xf = xf->parentXForm;
}
}
}
int main(int argc, char *argv[])
{
char *datafn=NULL;
char *datafn2=NULL;
char *s;
char *scriptFile;
char datafn1[MAXSTRLEN];
char newFn[MAXSTRLEN];
FILE *f;
UttInfo *utt; /* utterance information storage */
FBInfo *fbInfo; /* forward-backward information storage */
HMMSet hset; /* Set of HMMs to be re-estimated */
Source src;
float tmpFlt;
int tmpInt;
int numUtt,spUtt=0;
void Initialise(FBInfo *fbInfo, MemHeap *x, HMMSet *hset, char *hmmListFn);
void DoForwardBackward(FBInfo *fbInfo, UttInfo *utt, char *datafn, char *datafn2);
void UpdateModels(HMMSet *hset, ParmBuf pbuf2);
void StatReport(HMMSet *hset);
if(InitShell(argc,argv,herest_version,herest_vc_id)<SUCCESS)
HError(2300,"HERest: InitShell failed");
InitMem(); InitMath();
InitSigP(); InitAudio();
InitWave(); InitVQ();
InitLabel(); InitModel();
if(InitParm()<SUCCESS)
HError(2300,"HERest: InitParm failed");
InitTrain();
InitUtil(); InitFB();
InitAdapt(&xfInfo); InitMap();
if (!InfoPrinted() && NumArgs() == 0)
ReportUsage();
if (NumArgs() == 0) Exit(0);
al_hmmDir[0] = '\0'; al_hmmExt[0] = '\0';
al_hmmMMF[0] = '\0'; al_hmmLst[0] = '\0';
up_hmmMMF[0] = '\0';
CreateHeap(&hmmStack,"HmmStore", MSTAK, 1, 1.0, 50000, 500000);
SetConfParms();
CreateHMMSet(&hset,&hmmStack,TRUE);
CreateHeap(&uttStack, "uttStore", MSTAK, 1, 0.5, 100, 1000);
utt = (UttInfo *) New(&uttStack, sizeof(UttInfo));
CreateHeap(&fbInfoStack, "FBInfoStore", MSTAK, 1, 0.5, 100 , 1000 );
fbInfo = (FBInfo *) New(&fbInfoStack, sizeof(FBInfo));
CreateHeap(&accStack, "accStore", MSTAK, 1, 1.0, 50000, 500000);
while (NextArg() == SWITCHARG) {
s = GetSwtArg();
if (strlen(s)!=1)
HError(2319,"HERest: Bad switch %s; must be single letter",s);
switch(s[0]){
case 'b':
if (NextArg()!=STRINGARG)
HError(2319,"HERest: script file expected");
scriptFile = GetStrArg(); break;
void Initialise(void)
{
/* load HMM mmf */
if (MakeHMMSet(&hmset, GetStrArg()) < SUCCESS)
HError(9928, "Initialise: MakeHMMSet failed");
if (LoadHMMSet(&hmset, hmmDir, hmmExt) < SUCCESS)
HError(9928, "Initialise: LoadHMMSet failed");
if (hmset.hsKind == DISCRETEHS)
HError(9999, "Initialise: Only continuous model is surpported");
ConvDiagC(&hmset, TRUE);
if (trace & T_TOP) {
PrintrFlags();
printf("HMMSet is ");
switch (hmset.hsKind) {
case PLAINHS:
printf("PLAIN\n");
break;
case SHAREDHS:
printf("SHARED\n");
break;
case TIEDHS:
printf("TIED\n");
break;
default:
HError(9999, "Initialise: Only continuous model is supported");
}
printf("%d Logical/%d Physical Models Loaded, VecSize=%d\n", hmset.numLogHMM, hmset.numPhyHMM, hmset.vecSize);
if (hmset.numFiles > 0)
printf("%d MMF input files\n", hmset.numFiles);
fflush(stdout);
}
/* load duration mmf */
if (!stateAlign) {
if (MakeHMMSet(&dmset, GetStrArg()) < SUCCESS)
HError(9928, "Initialise: MakeHMMSet failed");
if (LoadHMMSet(&dmset, dmDir, dmExt) < SUCCESS)
HError(9928, "Initialise: LoadHMMSet failed");
if (hmset.hsKind == DISCRETEHS)
HError(9999, "Initialise: Only continuous duration model mmf is surpported");
ConvDiagC(&dmset, TRUE);
if (trace & T_TOP) {
printf("DurationModelSet is ");
switch (dmset.hsKind) {
case PLAINHS:
printf("PLAIN\n");
break;
case SHAREDHS:
printf("SHARED\n");
break;
case TIEDHS:
printf("TIED\n");
break;
default:
HError(9999, "Initialise: Only continuous model is supported");
}
printf("%d Logical/%d Physical Models Loaded, VecSize=%d\n", dmset.numLogHMM, dmset.numPhyHMM, dmset.vecSize);
if (dmset.numFiles > 0)
printf("%d MMF input files\n", dmset.numFiles);
fflush(stdout);
}
}
/* setup GenInfo */
genInfo->genMem = &genStack;
genInfo->hset = &hmset;
genInfo->dset = &dmset;
genInfo->maxStates = MaxStatesInSet(&hmset);
genInfo->maxMixes = MaxMixInSet(&hmset);
genInfo->speakRate = speakRate;
genInfo->MSDthresh = MSDthresh;
genInfo->modelAlign = modelAlign;
genInfo->stateAlign = stateAlign;
genInfo->frameRate = frameRate;
CheckGenSetUp();
/* setup EM-based parameter generation */
AttachAccs(&hmset, &gstack, (UPDSet) 0);
ZeroAccs(&hmset, (UPDSet) 0);
if (!stateAlign) {
AttachAccs(&dmset, &gstack, (UPDSet) 0);
ZeroAccs(&dmset, (UPDSet) 0);
}
if (type != CHOLESKY)
InitialiseForBack(fbInfo, &fbInfoStack, &hmset, (UPDSet) 0, ((useHMMFB || stateAlign) ? NULL : &dmset), (UPDSet) 0, pruneInit, pruneInc, pruneLim, minFrwdP, useAlign, FALSE);
/* handle input xform */
xfInfo_hmm.inFullC = xfInfo_dur.inFullC = TRUE;
/* semi-tied case */
if (hmset.semiTied != NULL) {
SetXForm(&hmset, NULL, hmset.semiTied);
ApplyHMMSetXForm(&hmset, hmset.semiTied, TRUE);
}
/* linear weight -> log weight */
ConvLogWt(&hmset);
}
