?? collect_evidence.c
字號:
for(i=0; i<NZB; i++){
value = bpr[i];
bindex = bir[i];
ind_subv(bindex, bCumprod, bdim, bsubv);
for(j=0; j<sdim; j++){
ssubv[j] = bsubv[mask[j]];
}
sindex = subv_ind(sdim, sCumprod, ssubv);
result = (int *) bsearch(&sindex, sir, NZS, sizeof(int), compare);
if(result){
position = result - sir;
value *= spr[position];
bigTable[nzCounts] = value;
index[nzCounts] = bindex;
nzCounts++;
}
}
pTemp = mxGetField(bigPot, 0, "T");
if(pTemp)mxDestroyArray(pTemp);
pTemp = convert_table_to_sparse(bigTable, index, nzCounts, NB);
mxSetField(bigPot, 0, "T", pTemp);
free(bigTable);
free(index);
free(mask);
free(bCumprod);
free(sCumprod);
free(bsubv);
free(ssubv);
}
mxArray* marginal_null_to_spPot(const mxArray *bigPot, const mxArray *sDomain, const int maximize){
int i, j, count, bdim, sdim, NB, NS, ND;
int *mask, *sir, *sjc;
double *pbDomain, *psDomain, *pbSize, *psSize, *spr;
mxArray *pTemp, *smallPot;
const char *field_names[] = {"domain", "T", "sizes"};
pTemp = mxGetField(bigPot, 0, "domain");
pbDomain = mxGetPr(pTemp);
bdim = mxGetNumberOfElements(pTemp);
psDomain = mxGetPr(sDomain);
sdim = mxGetNumberOfElements(sDomain);
pTemp = mxGetField(bigPot, 0, "sizes");
pbSize = mxGetPr(pTemp);
smallPot = mxCreateStructMatrix(1, 1, 3, field_names);
pTemp = mxDuplicateArray(sDomain);
mxSetField(smallPot, 0, "domain", pTemp);
NB = 1;
for(i=0; i<bdim; i++){
NB *= (int)pbSize[i];
}
if(sdim == 0){
pTemp = mxCreateSparse(1, 1, 1, mxREAL);
mxSetField(smallPot, 0, "T", pTemp);
spr = mxGetPr(pTemp);
sir = mxGetIr(pTemp);
sjc = mxGetJc(pTemp);
*spr = 0;
*sir = 0;
sjc[0] = 0;
sjc[1] = 1;
if(maximize) *spr = 1;
else *spr = NB;
pTemp = mxCreateDoubleMatrix(1, 1, mxREAL);
*mxGetPr(pTemp) = 1;
mxSetField(smallPot, 0, "sizes", pTemp);
return smallPot;
}
mask = malloc(sdim * sizeof(int));
count = 0;
for(i=0; i<sdim; i++){
for(j=0; j<bdim; j++){
if(psDomain[i] == pbDomain[j]){
mask[count] = j;
count++;
break;
}
}
}
pTemp = mxCreateDoubleMatrix(1, count, mxREAL);
psSize = mxGetPr(pTemp);
NS = 1;
for(i=0; i<count; i++){
psSize[i] = pbSize[mask[i]];
NS *= (int)psSize[i];
}
mxSetField(smallPot, 0, "sizes", pTemp);
ND = NB / NS;
pTemp = mxCreateSparse(NS, 1, NS, mxREAL);
mxSetField(smallPot, 0, "T", pTemp);
spr = mxGetPr(pTemp);
sir = mxGetIr(pTemp);
sjc = mxGetJc(pTemp);
if(maximize){
for(i=0; i<NS; i++){
spr[i] = 1;
sir[i] = i;
}
}
else{
for(i=0; i<NS; i++){
spr[i] = ND;
sir[i] = i;
}
}
sjc[0] = 0;
sjc[1] = NS;
free(mask);
return smallPot;
}
mxArray* marginal_spPot_to_spPot(const mxArray *bigPot, const mxArray *sDomain, const int maximize){
int i, j, count, bdim, sdim, NB, NS, NZB, position, bindex, sindex, nzCounts=0;
int *mask, *sequence, *result, *bir, *bjc, *bCumprod, *sCumprod, *bsubv, *ssubv;
double *sTable, *pbDomain, *psDomain, *pbSize, *psSize, *bpr, *spr;
mxArray *pTemp, *smallPot;
const char *field_names[] = {"domain", "T", "sizes"};
pTemp = mxGetField(bigPot, 0, "domain");
pbDomain = mxGetPr(pTemp);
bdim = mxGetNumberOfElements(pTemp);
psDomain = mxGetPr(sDomain);
sdim = mxGetNumberOfElements(sDomain);
pTemp = mxGetField(bigPot, 0, "sizes");
pbSize = mxGetPr(pTemp);
pTemp = mxGetField(bigPot, 0, "T");
bpr = mxGetPr(pTemp);
bir = mxGetIr(pTemp);
bjc = mxGetJc(pTemp);
NZB = bjc[1];
smallPot = mxCreateStructMatrix(1, 1, 3, field_names);
pTemp = mxDuplicateArray(sDomain);
mxSetField(smallPot, 0, "domain", pTemp);
if(sdim == 0){
pTemp = mxCreateSparse(1, 1, 1, mxREAL);
mxSetField(smallPot, 0, "T", pTemp);
spr = mxGetPr(pTemp);
bir = mxGetIr(pTemp);
bjc = mxGetJc(pTemp);
*spr = 0;
*bir = 0;
bjc[0] = 0;
bjc[1] = 1;
if(maximize){
for(i=0; i<NZB; i++){
*spr = (*spr < bpr[i])? bpr[i] : *spr;
}
}
else{
for(i=0; i<NZB; i++){
*spr += bpr[i];
}
}
pTemp = mxCreateDoubleMatrix(1, 1, mxREAL);
*mxGetPr(pTemp) = 1;
mxSetField(smallPot, 0, "sizes", pTemp);
return smallPot;
}
NB = 1;
for(i=0; i<bdim; i++){
NB *= (int)pbSize[i];
}
mask = malloc(sdim * sizeof(int));
count = 0;
for(i=0; i<sdim; i++){
for(j=0; j<bdim; j++){
if(psDomain[i] == pbDomain[j]){
mask[count] = j;
count++;
break;
}
}
}
pTemp = mxCreateDoubleMatrix(1, count, mxREAL);
psSize = mxGetPr(pTemp);
NS = 1;
for(i=0; i<count; i++){
psSize[i] = pbSize[mask[i]];
NS *= (int)psSize[i];
}
mxSetField(smallPot, 0, "sizes", pTemp);
sTable = malloc(NZB * sizeof(double));
sequence = malloc(NZB * 2 * sizeof(double));
bCumprod = malloc(bdim * sizeof(int));
sCumprod = malloc(sdim * sizeof(int));
bsubv = malloc(bdim * sizeof(int));
ssubv = malloc(sdim * sizeof(int));
for(i=0; i<NZB; i++)sTable[i] = 0;
bCumprod[0] = 1;
for(i=0; i<bdim-1; i++){
bCumprod[i+1] = bCumprod[i] * (int)pbSize[i];
}
sCumprod[0] = 1;
for(i=0; i<sdim-1; i++){
sCumprod[i+1] = sCumprod[i] * (int)psSize[i];
}
count = 0;
for(i=0; i<NZB; i++){
bindex = bir[i];
ind_subv(bindex, bCumprod, bdim, bsubv);
for(j=0; j<sdim; j++){
ssubv[j] = bsubv[mask[j]];
}
sindex = subv_ind(sdim, sCumprod, ssubv);
result = (int *) bsearch(&sindex, sequence, nzCounts, sizeof(int)*2, compare);
if(result){
position = (result - sequence) / 2;
if(maximize)
sTable[position] = (sTable[position] < bpr[i]) ? bpr[i] : sTable[position];
else sTable[position] += bpr[i];
}
else {
if(maximize)
sTable[nzCounts] = (sTable[nzCounts] < bpr[i]) ? bpr[i] : sTable[nzCounts];
else sTable[nzCounts] += bpr[i];
sequence[count] = sindex;
count++;
sequence[count] = nzCounts;
nzCounts++;
count++;
}
}
qsort(sequence, nzCounts, sizeof(int) * 2, compare);
pTemp = convert_ill_table_to_sparse(sTable, sequence, nzCounts, NS);
mxSetField(smallPot, 0, "T", pTemp);
free(sTable);
free(sequence);
free(mask);
free(bCumprod);
free(sCumprod);
free(bsubv);
free(ssubv);
return smallPot;
}
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]){
int i, n, p, np, pn, loop, loops, nCliques, temp, maximize;
int *collect_order;
double *pr, *pr1;
mxArray *pTemp, *pTemp1, *pPostP, *pClpot, *pSeppot, *pSeparator;
pTemp = mxGetField(prhs[0], 0, "cliques");
nCliques = mxGetNumberOfElements(pTemp);
loops = nCliques - 1;
pTemp = mxGetField(prhs[0], 0, "maximize");
maximize = (int)mxGetScalar(pTemp);
pSeparator = mxGetField(prhs[0], 0, "separator");
collect_order = malloc(2 * loops * sizeof(int));
pTemp = mxGetField(prhs[0], 0, "postorder");
pr = mxGetPr(pTemp);
pPostP = mxGetField(prhs[0], 0, "postorder_parents");
for(i=0; i<loops; i++){
temp = (int)pr[i] - 1;
pTemp = mxGetCell(pPostP, temp);
pr1 = mxGetPr(pTemp);
collect_order[i] = (int)pr1[0] - 1;
collect_order[i+loops] = temp;
}
plhs[0] = mxDuplicateArray(prhs[1]);
plhs[1] = mxDuplicateArray(prhs[2]);
for(loop=0; loop<loops; loop++){
p = collect_order[loop];
n = collect_order[loop+loops];
np = p * nCliques + n;
pn = n * nCliques + p;
pClpot = mxGetCell(plhs[0], n);
pTemp1 = mxGetField(pClpot, 0, "T");
pTemp = mxGetCell(pSeparator, pn);
if(pTemp1)
pSeppot = marginal_spPot_to_spPot(pClpot, pTemp, maximize);
else pSeppot = marginal_null_to_spPot(pClpot, pTemp, maximize);
mxSetCell(plhs[1], pn, pSeppot);
pClpot = mxGetCell(plhs[0], p);
pTemp1 = mxGetField(pClpot, 0, "T");
if(pTemp1)
multiply_spPot_by_spPot(pClpot, pSeppot);
else multiply_null_by_spPot(pClpot, pSeppot);
}
free(collect_order);
}
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