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/*
* libpinyin
* Library to deal with pinyin.
*
* Copyright (C) 2011 Peng Wu <alexepico@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "pinyin_internal.h"
#include "k_mixture_model.h"
void print_help(){
printf("Usage: validate_k_mixture_model <FILENAME>\n");
}
bool validate_unigram(KMixtureModelBigram * bigram){
KMixtureModelMagicHeader magic_header;
if( !bigram->get_magic_header(magic_header) ){
fprintf(stderr, "no magic header in k mixture model.\n");
return false;
}
guint32 expected_word_count = magic_header.m_WC;
if ( 0 == expected_word_count ){
fprintf(stderr, "word count in magic header is unexpected zero.\n");
return false;
}
guint32 expected_total_freq = magic_header.m_total_freq;
if ( 0 == expected_total_freq ){
fprintf(stderr, "total freq in magic header is unexpected zero.\n");
return false;
}
if ( expected_word_count != expected_total_freq ){
fprintf(stderr, "the word count doesn't match the total freq.\n");
return false;
}
GArray * items = g_array_new(FALSE, FALSE, sizeof(phrase_token_t));
bigram->get_all_items(items);
guint32 word_count = 0; guint32 total_freq = 0;
for (size_t i = 0; i < items->len; ++i) {
phrase_token_t * token = &g_array_index(items, phrase_token_t, i);
KMixtureModelArrayHeader array_header;
assert(bigram->get_array_header(*token, array_header));
word_count += array_header.m_WC;
total_freq += array_header.m_freq;
}
if ( word_count != expected_word_count ){
fprintf(stderr, "word count in magic header:%d\n",
expected_word_count);
fprintf(stderr, "sum of word count in array headers:%d\n", word_count);
fprintf(stderr, "the sum differs from word count.\n");
return false;
}
if ( total_freq != expected_total_freq ){
fprintf(stderr, "total freq in magic header:%d\n",
expected_total_freq);
fprintf(stderr, "sum of freqs in array headers:%d\n", total_freq);
fprintf(stderr, "the total freq differs from sum of freqs.\n");
return false;
}
g_array_free(items, TRUE);
return true;
}
bool validate_bigram(KMixtureModelBigram * bigram){
bool result = true;
GArray * items = g_array_new(FALSE, FALSE, sizeof(phrase_token_t));
bigram->get_all_items(items);
for (size_t i = 0; i < items->len; ++i) {
phrase_token_t * token = &g_array_index(items, phrase_token_t, i);
KMixtureModelSingleGram * single_gram = NULL;
assert(bigram->load(*token, single_gram));
FlexibleBigramPhraseArray array = g_array_new
(FALSE, FALSE, sizeof(KMixtureModelArrayItemWithToken));
single_gram->retrieve_all(array);
KMixtureModelArrayHeader array_header;
assert(single_gram->get_array_header(array_header));
guint32 expected_sum = array_header.m_WC;
guint32 freq = array_header.m_freq;
if ( 0 == expected_sum ){
if ( 0 != array->len ){
fprintf(stderr, "in the array header of token %d:\n", *token);
fprintf(stderr, "word count is zero but has array items.\n");
result = false;
}
if ( 0 != freq ){
continue;
} else {
fprintf(stderr, "in the array header of token %d:\n", *token);
fprintf(stderr, "both word count and freq are "
"unexpected zero.\n");
result = false;
}
}
guint32 sum = 0;
for (size_t m = 0; m< array->len; ++m){
KMixtureModelArrayItemWithToken * item = &g_array_index(array, KMixtureModelArrayItemWithToken, m);
sum += item->m_item.m_WC;
}
if ( sum != expected_sum ){
fprintf(stderr, "word count in array header:%d\n", expected_sum);
fprintf(stderr, "sum of word count in array items:%d\n", sum);
fprintf(stderr, "the sum differs from word count.\n");
result = false;
}
g_array_free(array, TRUE);
}
g_array_free(items, TRUE);
return result;
}
int main(int argc, char * argv[]){
int i = 1;
const char * k_mixture_model_filename = NULL;
while ( i < argc ){
if ( strcmp ("--help", argv[i]) == 0 ){
print_help();
exit(0);
} else {
k_mixture_model_filename = argv[i];
}
++i;
}
KMixtureModelBigram bigram(K_MIXTURE_MODEL_MAGIC_NUMBER);
bigram.attach(k_mixture_model_filename, ATTACH_READONLY);
if (!validate_unigram(&bigram)) {
fprintf(stderr, "k mixture model validation failed.\n");
exit(ENODATA);
}
if (!validate_bigram(&bigram)) {
fprintf(stderr, "k mixture model validation failed.\n");
exit(ENODATA);
}
return 0;
}
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