comparison toolboxes/FullBNT-1.0.7/bnt/inference/static/@jtree_sparse_inf_engine/old/init_pot.c @ 0:e9a9cd732c1e tip

first hg version after svn

+/* C mex init_pot for in @jtree_sparse_inf_engine directory               */
+/* The file enter_evidence.m in directory @jtree_sparse_inf_engine call it*/
+
+/**************************************/
+/* init_pot.c has 6 input & 2 output  */
+/* engine                             */
+/* clqs                               */
+/* pots                               */
+/* pot_type                           */
+/* onodes                             */
+/* ndx                                */
+/*                                    */
+/* clpot                              */
+/* seppot                             */
+/**************************************/
+#include <math.h>
+#include <search.h>
+#include "mex.h"
+
+int compare(const void* src1, const void* src2){
+	int i1 = *(int*)src1 ;
+	int i2 = *(int*)src2 ;
+	return i1-i2 ;
+}
+
+void ind_subv(int index, const int *cumprod, int n, int *bsubv){
+	int i;
+
+	for (i = n-1; i >= 0; i--) {
+		bsubv[i] = ((int)floor(index / cumprod[i]));
+		index = index % cumprod[i];
+	}
+}
+
+int subv_ind(const int n, const int *cumprod, const int *subv){
+	int i, index=0;
+
+	for(i=0; i<n; i++){
+		index += subv[i] * cumprod[i];
+	}
+	return index;
+}
+
+void compute_fixed_weight(int *weight, const double *pbSize, const int *dmask, const int *bCumprod, const int ND, const int diffdim){
+	int i, j;
+	int *eff_cumprod, *subv, *diffsize, *diff_cumprod;
+
+	subv = malloc(diffdim * sizeof(int));
+	eff_cumprod = malloc(diffdim * sizeof(int));
+	diffsize = malloc(diffdim * sizeof(int));
+	diff_cumprod = malloc(diffdim * sizeof(int));
+	for(i=0; i<diffdim; i++){
+		eff_cumprod[i] = bCumprod[dmask[i]];
+		diffsize[i] = (int)pbSize[dmask[i]];
+	}
+	diff_cumprod[0] = 1;
+	for(i=0; i<diffdim-1; i++){
+		diff_cumprod[i+1] = diff_cumprod[i] * diffsize[i];
+	}
+	for(i=0; i<ND; i++){
+		ind_subv(i, diff_cumprod, diffdim, subv);
+		weight[i] = 0;
+		for(j=0; j<diffdim; j++){
+			weight[i] += eff_cumprod[j] * subv[j];
+		}
+	}
+	free(eff_cumprod);
+	free(subv);
+	free(diffsize);
+	free(diff_cumprod);
+}
+
+mxArray* convert_to_sparse(const double *table, const int NB, const int counts){
+	mxArray  *spTable;
+    int      i, k, *ir, *jc;
+    double   *sr;
+    
+	spTable = mxCreateSparse(NB, 1, counts, mxREAL);
+    sr = mxGetPr(spTable);
+    ir = mxGetIr(spTable);
+    jc = mxGetJc(spTable);
+
+    k = 0; 
+	jc[0] = 0;
+	jc[1] = counts;
+	for(i=0; i<NB; i++){
+		if(table[i] != 0.0){
+			sr[k] = table[i];
+			ir[k] = i;
+			k++;
+		}
+    }
+
+	return spTable;
+}
+
+mxArray* convert_table_to_sparse(const double *bT, const int *index, const int nzCounts, const int NB){
+	mxArray  *spTable;
+    int      i, *irs, *jcs;
+    double   *sr;
+    
+	spTable = mxCreateSparse(NB, 1, nzCounts, mxREAL);
+    sr  = mxGetPr(spTable);
+    irs = mxGetIr(spTable);
+    jcs = mxGetJc(spTable);
+
+	jcs[0] = 0;
+	jcs[1] = nzCounts;
+
+	for(i=0; i<nzCounts; i++){
+			sr[i] = bT[i];
+			irs[i] = index[i];
+    }
+	return spTable;	
+}
+
+mxArray* convert_ill_table_to_sparse(const double *bigTable, const int *sequence, const int nzCounts, const int NB){
+	mxArray *spTable;
+	int     i, temp, *irs, *jcs, count=0;
+	double  *sr;
+
+	spTable = mxCreateSparse(NB, 1, nzCounts, mxREAL);
+    sr  = mxGetPr(spTable);
+    irs = mxGetIr(spTable);
+    jcs = mxGetJc(spTable);
+
+	jcs[0] = 0;
+	jcs[1] = nzCounts;
+
+	for(i=0; i<nzCounts; i++){
+		irs[i] = sequence[count];
+		count++;
+		temp = sequence[count];
+		sr[i] = bigTable[temp];
+		count++;
+	}
+	return spTable;
+}
+
+void multiply_null_by_fuPot(mxArray *bigPot, const mxArray *smallPot){
+	int     i, j, count, NB, NS, siz_b, siz_s, ndim, nzCounts=0;
+	int     *mask, *sx, *sy, *cpsy, *subs, *s, *cpsy2, *jc;
+	double  *pbDomain, *psDomain, *pbSize, *psSize, *bTable, *sTable, value;
+	mxArray *pTemp, *pTemp1;
+
+	pTemp = mxGetField(bigPot, 0, "domain");
+	pbDomain = mxGetPr(pTemp);
+	siz_b = mxGetNumberOfElements(pTemp);
+	pTemp = mxGetField(smallPot, 0, "domain");
+	psDomain = mxGetPr(pTemp);
+	siz_s = mxGetNumberOfElements(pTemp);
+
+	pTemp = mxGetField(bigPot, 0, "sizes");
+	pbSize = mxGetPr(pTemp);
+	pTemp = mxGetField(smallPot, 0, "sizes");
+	psSize = mxGetPr(pTemp);
+
+	NB = 1;
+	for(i=0; i<siz_b; i++){
+		NB *= (int)pbSize[i];
+	}
+	NS = 1;
+	for(i=0; i<siz_s; i++){
+		NS *= (int)psSize[i];
+	}
+
+	pTemp = mxGetField(smallPot, 0, "T");
+	sTable = mxGetPr(pTemp);
+	bTable = malloc(NB * sizeof(double));
+	for(i=0; i<NB; i++){
+		bTable[i] = 0;
+	}
+
+	if(NS == 1){
+		value = *sTable;
+		for(i=0; i<NB; i++){
+			bTable[i] = value;
+		}
+		nzCounts = NB;
+		pTemp = mxGetField(bigPot, 0, "T");
+		if(pTemp)mxDestroyArray(pTemp);
+		pTemp = convert_to_sparse(bTable, NB, NB);
+		mxSetField(bigPot, 0, "T", pTemp);
+		free(bTable);
+		return;
+	}
+
+	if(NS == NB){
+		for(i=0; i<NB; i++){
+			bTable[i] = sTable[i];
+			if(sTable[i] != 0) nzCounts++;
+		}
+		pTemp = mxGetField(bigPot, 0, "T");
+		if(pTemp)mxDestroyArray(pTemp);
+		pTemp = convert_to_sparse(bTable, NB, nzCounts);
+		mxSetField(bigPot, 0, "T", pTemp);
+		free(bTable);
+		return;
+	}
+
+	mask = malloc(siz_s * sizeof(int));
+	count = 0;
+	for(i=0; i<siz_s; i++){
+		for(j=0; j<siz_b; j++){
+			if(psDomain[i] == pbDomain[j]){
+				mask[count] = j;
+				count++;
+				break;
+			}
+		}
+	}
+	
+	ndim = siz_b;
+	sx = (int *)malloc(sizeof(int)*ndim);
+	sy = (int *)malloc(sizeof(int)*ndim);
+	for(i=0; i<ndim; i++){
+		sx[i] = (int)pbSize[i];
+		sy[i] = 1;
+	}
+	for(i=0; i<count; i++){
+		sy[mask[i]] = sx[mask[i]];
+	}
+
+	s = (int *)malloc(sizeof(int)*ndim);
+	*(cpsy = (int *)malloc(sizeof(int)*ndim)) = 1;
+	subs =   (int *)malloc(sizeof(int)*ndim);
+	cpsy2 =  (int *)malloc(sizeof(int)*ndim);
+	for(i = 0; i < ndim; i++){
+		subs[i] = 0;
+		s[i] = sx[i] - 1;
+	}
+			
+	for(i = 0; i < ndim-1; i++){
+		cpsy[i+1] = cpsy[i]*sy[i]--;
+		cpsy2[i] = cpsy[i]*sy[i];
+	}
+	cpsy2[ndim-1] = cpsy[ndim-1]*(--sy[ndim-1]);
+
+	for(j=0; j<NB; j++){
+		bTable[j] = *sTable;
+		if(*sTable != 0.0) nzCounts++;
+		for(i = 0; i < ndim; i++){
+			if(subs[i] == s[i]){
+				subs[i] = 0;
+				if(sy[i])
+					sTable -= cpsy2[i];
+			}
+			else{
+				subs[i]++;
+				if(sy[i])
+					sTable += cpsy[i];
+				break;
+			}
+		}
+	}
+
+	pTemp = mxGetField(bigPot, 0, "T");
+	if(pTemp)mxDestroyArray(pTemp);
+	pTemp = convert_to_sparse(bTable, NB, nzCounts);
+	mxSetField(bigPot, 0, "T", pTemp);
+	pTemp1 = mxGetField(bigPot, 0, "T");
+	jc = mxGetJc(pTemp1);
+
+	free(sx);
+	free(sy);
+	free(s);
+	free(cpsy);
+	free(subs);
+	free(cpsy2);
+    free(mask);
+	free(bTable);
+}
+
+void multiply_null_by_spPot(mxArray *bigPot, const mxArray *smallPot){
+	int     i, j, count, count1, match, temp, bdim, sdim, diffdim, NB, NS, ND, NZB, NZS, bindex, sindex, nzCounts=0;
+	int     *samemask, *diffmask, *sir, *sjc, *bCumprod, *sCumprod, *ssubv, *sequence, *weight;
+	double  *bigTable, *pbDomain, *psDomain, *pbSize, *psSize, *spr;
+	mxArray *pTemp, *pTemp1;
+
+	pTemp = mxGetField(bigPot, 0, "domain");
+	pbDomain = mxGetPr(pTemp);
+	bdim = mxGetNumberOfElements(pTemp);
+	pTemp = mxGetField(smallPot, 0, "domain");
+	psDomain = mxGetPr(pTemp);
+	sdim = mxGetNumberOfElements(pTemp);
+
+	pTemp = mxGetField(bigPot, 0, "sizes");
+	pbSize = mxGetPr(pTemp);
+	pTemp = mxGetField(smallPot, 0, "sizes");
+	psSize = mxGetPr(pTemp);
+
+	NB = 1;
+	for(i=0; i<bdim; i++){
+		NB *= (int)pbSize[i];
+	}
+	NS = 1;
+	for(i=0; i<sdim; i++){
+		NS *= (int)psSize[i];
+	}
+	ND = NB / NS;
+
+	if(ND == 1){
+		pTemp = mxGetField(bigPot, 0, "T");
+		if(pTemp)mxDestroyArray(pTemp);
+		pTemp1 = mxGetField(smallPot, 0, "T");
+		pTemp = mxDuplicateArray(pTemp1);
+		mxSetField(bigPot, 0, "T", pTemp);
+		return;
+	}
+
+	pTemp = mxGetField(smallPot, 0, "T");
+	spr = mxGetPr(pTemp);
+	sir = mxGetIr(pTemp);
+	sjc = mxGetJc(pTemp);
+	NZS = sjc[1];
+
+	NZB = ND * NZS;
+
+	diffdim = bdim - sdim;
+	sequence = malloc(NZB * 2 * sizeof(int));
+	bigTable = malloc(NZB * sizeof(double));
+	samemask = malloc(sdim * sizeof(int));
+	diffmask = malloc(diffdim * sizeof(int));
+	bCumprod = malloc(bdim * sizeof(int));
+	sCumprod = malloc(sdim * sizeof(int));
+	weight = malloc(ND * sizeof(int));
+	ssubv = malloc(sdim * sizeof(int));
+
+	count = 0;
+	count1 = 0;
+	for(i=0; i<bdim; i++){
+		match = 0;
+		for(j=0; j<sdim; j++){
+			if(pbDomain[i] == psDomain[j]){
+				samemask[count] = i;
+				match = 1;
+				count++;
+				break;
+			}
+		}
+		if(match == 0){
+			diffmask[count1] = i; 
+			count1++;
+		}
+	}
+
+	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;
+	compute_fixed_weight(weight, pbSize, diffmask, bCumprod, ND, diffdim);
+	for(i=0; i<NZS; i++){
+		sindex = sir[i];
+		ind_subv(sindex, sCumprod, sdim, ssubv);
+		temp = 0;
+		for(j=0; j<sdim; j++){
+			temp += ssubv[j] * bCumprod[samemask[j]];
+		}
+		for(j=0; j<ND; j++){
+			bindex = weight[j] + temp;
+			bigTable[nzCounts] = spr[i];
+			sequence[count] = bindex;
+			count++;
+			sequence[count] = nzCounts;
+			nzCounts++;
+			count++;
+		}
+	}
+
+	pTemp = mxGetField(bigPot, 0, "T");
+	if(pTemp)mxDestroyArray(pTemp);
+	qsort(sequence, nzCounts, sizeof(int) * 2, compare);
+	pTemp = convert_ill_table_to_sparse(bigTable, sequence, nzCounts, NB);
+	mxSetField(bigPot, 0, "T", pTemp);
+
+	free(sequence); 
+	free(bigTable);
+	free(samemask);
+	free(diffmask);
+	free(bCumprod);
+	free(sCumprod);
+	free(weight);
+	free(ssubv);
+}
+
+void multiply_spPot_by_fuPot(mxArray *bigPot, const mxArray *smallPot){
+	int     i, j, count, bdim, sdim, NB, NZB, bindex, sindex, nzCounts=0;
+	int     *mask, *index, *bir, *bjc, *bCumprod, *sCumprod, *bsubv, *ssubv;
+	double  *bigTable, *pbDomain, *psDomain, *pbSize, *psSize, *bpr, *spr, value;
+	mxArray *pTemp;
+
+	pTemp = mxGetField(bigPot, 0, "domain");
+	pbDomain = mxGetPr(pTemp);
+	bdim = mxGetNumberOfElements(pTemp);
+	pTemp = mxGetField(smallPot, 0, "domain");
+	psDomain = mxGetPr(pTemp);
+	sdim = mxGetNumberOfElements(pTemp);
+
+	pTemp = mxGetField(bigPot, 0, "sizes");
+	pbSize = mxGetPr(pTemp);
+	pTemp = mxGetField(smallPot, 0, "sizes");
+	psSize = mxGetPr(pTemp);
+
+	NB = 1;
+	for(i=0; i<bdim; i++){
+		NB *= (int)pbSize[i];
+	}
+
+	pTemp = mxGetField(bigPot, 0, "T");
+	bpr = mxGetPr(pTemp);
+	bir = mxGetIr(pTemp);
+	bjc = mxGetJc(pTemp);
+	NZB = bjc[1];
+
+	pTemp = mxGetField(smallPot, 0, "T");
+	spr = mxGetPr(pTemp);
+
+	bigTable = malloc(NZB * sizeof(double));
+	index = malloc(NZB * sizeof(double));
+	mask = malloc(sdim * sizeof(int));
+	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++){
+		bigTable[i] = 0;
+	}
+	count = 0;
+	for(i=0; i<sdim; i++){
+		for(j=0; j<bdim; j++){
+			if(psDomain[i] == pbDomain[j]){
+				mask[count] = j;
+				count++;
+				break;
+			}
+		}
+	}
+	
+	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];
+	}
+
+	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);
+		value = spr[sindex];
+		if(value != 0){
+			bigTable[nzCounts] = bpr[i] * 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);
+}
+
+void multiply_spPot_by_spPot(mxArray *bigPot, const mxArray *smallPot){
+	int     i, j, count, bdim, sdim, NB, NZB, NZS, position, bindex, sindex, nzCounts=0;
+	int     *mask, *index, *result, *bir, *sir, *bjc, *sjc, *bCumprod, *sCumprod, *bsubv, *ssubv;
+	double  *bigTable, *pbDomain, *psDomain, *pbSize, *psSize, *bpr, *spr, value;
+	mxArray *pTemp;
+
+	pTemp = mxGetField(bigPot, 0, "domain");
+	pbDomain = mxGetPr(pTemp);
+	bdim = mxGetNumberOfElements(pTemp);
+	pTemp = mxGetField(smallPot, 0, "domain");
+	psDomain = mxGetPr(pTemp);
+	sdim = mxGetNumberOfElements(pTemp);
+
+	pTemp = mxGetField(bigPot, 0, "sizes");
+	pbSize = mxGetPr(pTemp);
+	pTemp = mxGetField(smallPot, 0, "sizes");
+	psSize = mxGetPr(pTemp);
+
+	NB = 1;
+	for(i=0; i<bdim; i++){
+		NB *= (int)pbSize[i];
+	}
+
+	pTemp = mxGetField(bigPot, 0, "T");
+	bpr = mxGetPr(pTemp);
+	bir = mxGetIr(pTemp);
+	bjc = mxGetJc(pTemp);
+	NZB = bjc[1];
+
+	pTemp = mxGetField(smallPot, 0, "T");
+	spr = mxGetPr(pTemp);
+	sir = mxGetIr(pTemp);
+	sjc = mxGetJc(pTemp);
+	NZS = sjc[1];
+
+	bigTable = malloc(NZB * sizeof(double));
+	index = malloc(NZB * sizeof(double));
+	mask = malloc(sdim * sizeof(int));
+	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++){
+		bigTable[i] = 0;
+	}
+	count = 0;
+	for(i=0; i<sdim; i++){
+		for(j=0; j<bdim; j++){
+			if(psDomain[i] == pbDomain[j]){
+				mask[count] = j;
+				count++;
+				break;
+			}
+		}
+	}
+	
+	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];
+	}
+
+	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);
+}
+
+
+void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]){
+	int     i, j, c, loop, nNodes, nCliques, ndomain, dims[2];
+	double  *pClqs, *pr, *pt, *pSize;
+	mxArray *pTemp, *pTemp1, *pStruct, *pCliques, *pBigpot, *pSmallpot;
+	const char *field_names[] = {"domain", "T", "sizes"};
+
+	nNodes = mxGetNumberOfElements(prhs[1]);
+	pCliques = mxGetField(prhs[0], 0, "cliques");
+	nCliques = mxGetNumberOfElements(pCliques);
+	pTemp = mxGetField(prhs[0], 0, "eff_node_sizes");
+	pSize = mxGetPr(pTemp);
+
+	plhs[0] = mxCreateCellArray(1, &nCliques);
+    for(i=0; i<nCliques; i++){
+        pStruct = mxCreateStructMatrix(1, 1, 3, field_names);
+		mxSetCell(plhs[0], i, pStruct);
+		pTemp = mxGetCell(pCliques, i);
+		ndomain = mxGetNumberOfElements(pTemp);
+		pt = mxGetPr(pTemp);
+		pTemp1 = mxDuplicateArray(pTemp);
+		mxSetField(pStruct, 0, "domain", pTemp1);
+		
+		pTemp = mxCreateDoubleMatrix(1, ndomain, mxREAL);
+		mxSetField(pStruct, 0, "sizes", pTemp);
+		pr = mxGetPr(pTemp);
+        for(j=0; j<ndomain; j++){
+            pr[j] = pSize[(int)pt[j]-1];
+        }
+    }
+
+	pClqs = mxGetPr(prhs[1]);
+	for(loop=0; loop<nNodes; loop++){
+		c = (int)pClqs[loop] - 1;
+		pSmallpot = mxGetCell(prhs[2], loop);
+		pTemp = mxGetField(pSmallpot, 0, "T");
+		pBigpot = mxGetCell(plhs[0], c);
+		pTemp1 = mxGetField(pBigpot, 0, "T");
+		if(pTemp1){
+			if(mxIsSparse(pTemp))
+				multiply_spPot_by_spPot(pBigpot, pSmallpot);
+			else multiply_spPot_by_fuPot(pBigpot, pSmallpot);
+		}
+		else{
+			if(mxIsSparse(pTemp))
+				multiply_null_by_spPot(pBigpot, pSmallpot);
+			else multiply_null_by_fuPot(pBigpot, pSmallpot);
+		}		
+	}
+
+	dims[0] = nCliques;
+	dims[1] = nCliques;
+	plhs[1] = mxCreateCellArray(2, dims);
+}
+
+