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alpine_miner_plda.c
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alpine_miner_plda.c
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#include "postgres.h"
#include "funcapi.h"
#include "catalog/pg_type.h"
#include "utils/array.h"
#include "utils/builtins.h"
#include <math.h>
#include <string.h>
PG_FUNCTION_INFO_V1(alpine_plda_count_accum);
PG_FUNCTION_INFO_V1(alpine_plda_count_combine);
PG_FUNCTION_INFO_V1(alpine_plda_gene);
PG_FUNCTION_INFO_V1(getgrandomtopic);
PG_FUNCTION_INFO_V1(alpine_plda_first);
static int64 getgrandomtopic
(int64 topicnumber, int64 content, int64 lastgeneassign, int64 * globwordtopic,
int64 * lastgenetopic, int64 * topic_counts, float8 alpha, float8 eta , int64 wordnumber)
{
int64 j, temp_glwordtopic, singledoctopic, ret;
float8 r, cl_prob, total_unpr;
float8 * topic_prs = (float8 *)palloc(sizeof(float8) * topicnumber);
int64 bignumber;
bignumber=1000000;
lastgeneassign--;
total_unpr = 0;
for (j=0; j!=topicnumber; j++) {
temp_glwordtopic = globwordtopic[(content-1) * topicnumber + j];
singledoctopic = lastgenetopic[j];
if (j == lastgeneassign) {
temp_glwordtopic--;
singledoctopic--;
}
cl_prob = (singledoctopic + alpha) * (temp_glwordtopic + eta) /
(topic_counts[j] + wordnumber * eta);
total_unpr += cl_prob;
topic_prs[j] = total_unpr;
}
for (j=0; j!=topicnumber; j++){
topic_prs[j] = topic_prs[j] / total_unpr;
}
r = (rand()%bignumber)/(double)bignumber;
ret = 1;
while (true) {
if (ret == topicnumber || r < topic_prs[ret-1]) break;
ret++;
}
pfree(topic_prs);
return ret;
}
Datum
alpine_plda_count_accum(PG_FUNCTION_ARGS)
{
ArrayType *state;
int64 * state_array_data;
ArrayType * column_array;
ArrayType * assign_array;
int64 column_size,assign_size,topicnumber,wordnumber;
int64 result_size;
int64 size;
int64 * column_array_data;
int64 * assign_array_data;
int64 k;
if (PG_ARGISNULL(0)){
PG_RETURN_NULL();
}
state = PG_GETARG_ARRAYTYPE_P(0);
state_array_data = (int64*) ARR_DATA_PTR(state);
column_array = PG_GETARG_ARRAYTYPE_P(1);
column_size = ARR_DIMS(column_array)[0];
column_array_data = (int64*) ARR_DATA_PTR(column_array);
assign_array=PG_GETARG_ARRAYTYPE_P(2);
assign_size = ARR_DIMS(assign_array)[0];
assign_array_data = (int64*) ARR_DATA_PTR(assign_array);
topicnumber=PG_GETARG_INT64(3);
wordnumber =PG_GETARG_INT64(4);
if (ARR_DIMS(state)[0] == 1){
result_size = topicnumber*wordnumber;
size = result_size * sizeof(int64) + ARR_OVERHEAD_NONULLS(1);
state = (ArrayType *) palloc(size);
SET_VARSIZE(state, size);
state->ndim = 1;
state->dataoffset = 0;
state->elemtype = INT8OID;
ARR_DIMS(state)[0] = result_size;
ARR_LBOUND(state)[0] = 1;
state_array_data = (int64*) ARR_DATA_PTR(state);
memset(state_array_data, 0, result_size * sizeof(int64));
}
for ( k = 0; k < column_size; k++){
state_array_data[topicnumber*(column_array_data[k]-1)+assign_array_data[k]-1]=state_array_data[topicnumber*(column_array_data[k]-1)+assign_array_data[k]-1]+1;
}
PG_RETURN_ARRAYTYPE_P(state);
}
Datum
alpine_plda_count_combine(PG_FUNCTION_ARGS)
{
ArrayType *state1, *state2, *result;
int64 *state1Data, *state2Data, *resultData;
int64 i, size;
int64 statelen;
if (PG_ARGISNULL(0))
{
if (PG_ARGISNULL(1))
{
PG_RETURN_NULL();
}
PG_RETURN_ARRAYTYPE_P(PG_GETARG_ARRAYTYPE_P(1));
}
if (PG_ARGISNULL(1))
{
PG_RETURN_ARRAYTYPE_P(PG_GETARG_ARRAYTYPE_P(0));
}
state1 = PG_GETARG_ARRAYTYPE_P(0);
state2 = PG_GETARG_ARRAYTYPE_P(1);
if (ARR_NULLBITMAP(state1) || ARR_NULLBITMAP(state2) ||
ARR_NDIM(state1) != 1 || ARR_NDIM(state2) != 1 ||
ARR_ELEMTYPE(state1) != INT8OID || ARR_ELEMTYPE(state2) != INT8OID)
{
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("preliminary segment-level calculation function \"%s\" called with invalid parameters",
format_procedure(fcinfo->flinfo->fn_oid))));
}
if (ARR_DIMS(state1)[0] == 1)
PG_RETURN_ARRAYTYPE_P(state2);
if (ARR_DIMS(state2)[0] == 1)
PG_RETURN_ARRAYTYPE_P(state1);
state1Data = (int64*) ARR_DATA_PTR(state1);
state2Data = (int64*) ARR_DATA_PTR(state2);
if (ARR_DIMS(state1)[0] != ARR_DIMS(state2)[0])
{
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("preliminary segment-level calculation function \"%s\" called with invalid parameters",
format_procedure(fcinfo->flinfo->fn_oid)),
errdetail("The independent-variable array is not of constant width.")));
}
statelen = ARR_DIMS(state1)[0];
size = statelen * sizeof(int64) + ARR_OVERHEAD_NONULLS(1);
result = (ArrayType *) palloc(size);
SET_VARSIZE(result, size);
result->ndim = 1;
result->dataoffset = 0;
result->elemtype = INT8OID;
ARR_DIMS(result)[0] = statelen;
ARR_LBOUND(result)[0] = 1;
resultData = (int64*) ARR_DATA_PTR(result);
memset(resultData, 0, statelen * sizeof(int64));
for (i = 0; i < statelen; i++){
resultData[i] = state1Data[i] + state2Data[i];
}
PG_RETURN_ARRAYTYPE_P(result);
}
Datum
alpine_plda_first(PG_FUNCTION_ARGS)
{
ArrayType *assign;
ArrayType *topiccount;
int64 * assign_array_data;
int64 * topiccount_array_data;
Datum values[2];
int64 column_size,topicnumber;
int64 temptopic;
int64 k;
Datum * arr1;
bool * isnulls ;
TupleDesc tuple;
HeapTuple ret;
Datum * arr2;
if (PG_ARGISNULL(0)){
PG_RETURN_NULL();
}
column_size=PG_GETARG_INT64(0);
topicnumber=PG_GETARG_INT64(1);
arr1 = palloc0(column_size * sizeof(Datum));
assign = construct_array(arr1,column_size,INT8OID,8,true,'i');
assign_array_data = (int64 *)ARR_DATA_PTR(assign);
arr2 = palloc0(topicnumber * sizeof(Datum));
topiccount = construct_array(arr2,topicnumber,INT8OID,8,true,'i');
topiccount_array_data = (int64 *)ARR_DATA_PTR(topiccount);
for ( k = 0; k < column_size; k++){
temptopic = random() % topicnumber + 1;
assign_array_data[k] = temptopic;
topiccount_array_data[temptopic-1]++;
}
values[0] = PointerGetDatum(assign);
values[1] = PointerGetDatum(topiccount);
if (get_call_result_type(fcinfo, NULL, &tuple) != TYPEFUNC_COMPOSITE)
ereport(ERROR,
(errcode( ERRCODE_FEATURE_NOT_SUPPORTED ),
errmsg( "function returning record called in context "
"that cannot accept type record" )));
tuple = BlessTupleDesc(tuple);
isnulls = palloc0(2 * sizeof(bool));
ret = heap_form_tuple(tuple, values, isnulls);
if (isnulls[0] || isnulls[1])
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("function \"%s\" produced null results",
format_procedure(fcinfo->flinfo->fn_oid))));
PG_RETURN_DATUM(HeapTupleGetDatum(ret));
}
Datum
alpine_plda_gene(PG_FUNCTION_ARGS)
{
ArrayType *assign;
ArrayType *allassign;
ArrayType *wordtopic;
ArrayType *lastinfo;
ArrayType *topiccount;
ArrayType * column_array;
ArrayType * lastassign;
int64 * assign_array_data;
int64 * wordtopic_data;
int64 * lastinfo_data;
int64 * lastassign_data;
int64 * allassign_data;
int64 * topiccount_array_data;
int64 * column_array_data;
Datum values[2];
int64 column_size,topicnumber,wordnumber;
int64 temptopic;
int64 k;
float8 alpha,beta;
bool * isnulls ;
TupleDesc tuple;
HeapTuple ret;
Datum * arr1;
Datum * arr2;
if (PG_ARGISNULL(0)){
PG_RETURN_NULL();
}
column_array=PG_GETARG_ARRAYTYPE_P(0);
allassign=PG_GETARG_ARRAYTYPE_P(1);
wordtopic=PG_GETARG_ARRAYTYPE_P(2);
lastassign=PG_GETARG_ARRAYTYPE_P(3);
lastinfo=PG_GETARG_ARRAYTYPE_P(4);
alpha=PG_GETARG_FLOAT8(5);
beta=PG_GETARG_FLOAT8(6);
wordnumber=PG_GETARG_INT64(7);
topicnumber=PG_GETARG_INT64(8);
column_array_data = (int64*) ARR_DATA_PTR(column_array);
allassign_data = (int64*) ARR_DATA_PTR(allassign);
lastinfo_data= (int64*) ARR_DATA_PTR(lastinfo);
lastassign_data= (int64*) ARR_DATA_PTR(lastassign);
wordtopic_data=(int64*) ARR_DATA_PTR(wordtopic);
column_size=ARR_DIMS(column_array)[0];
arr1 = palloc0(column_size * sizeof(Datum));
assign = construct_array(arr1,column_size,INT8OID,8,true,'i');
assign_array_data = (int64 *)ARR_DATA_PTR(assign);
arr2 = palloc0(topicnumber * sizeof(Datum));
topiccount = construct_array(arr2,topicnumber,INT8OID,8,true,'i');
topiccount_array_data = (int64 *)ARR_DATA_PTR(topiccount);
for ( k = 0; k < column_size; k++){
temptopic =getgrandomtopic
(topicnumber, column_array_data[k], lastassign_data[k], wordtopic_data,
lastinfo_data, allassign_data, alpha, beta , wordnumber) ;
assign_array_data[k] = temptopic;
topiccount_array_data[temptopic-1]++;
}
values[0] = PointerGetDatum(assign);
values[1] = PointerGetDatum(topiccount);
if (get_call_result_type(fcinfo, NULL, &tuple) != TYPEFUNC_COMPOSITE)
ereport(ERROR,
(errcode( ERRCODE_FEATURE_NOT_SUPPORTED ),
errmsg( "function returning record called in context "
"that cannot accept type record" )));
tuple = BlessTupleDesc(tuple);
isnulls = palloc0(2 * sizeof(bool));
ret = heap_form_tuple(tuple, values, isnulls);
if (isnulls[0] || isnulls[1])
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("function \"%s\" produced null results",
format_procedure(fcinfo->flinfo->fn_oid))));
PG_RETURN_DATUM(HeapTupleGetDatum(ret));
}