diff options
Diffstat (limited to 'utils/training/k_mixture_model_to_interpolation.cpp')
| -rw-r--r-- | utils/training/k_mixture_model_to_interpolation.cpp | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/utils/training/k_mixture_model_to_interpolation.cpp b/utils/training/k_mixture_model_to_interpolation.cpp new file mode 100644 index 0000000..c5a66ec --- /dev/null +++ b/utils/training/k_mixture_model_to_interpolation.cpp @@ -0,0 +1,214 @@ +/* + * 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 "utils_helper.h" + +enum LINE_TYPE{ + BEGIN_LINE = 1, + END_LINE, + GRAM_1_LINE, + GRAM_2_LINE, + GRAM_1_ITEM_LINE, + GRAM_2_ITEM_LINE +}; + +static int line_type = 0; +static GPtrArray * values = NULL; +static GHashTable * required = NULL; +/* variables for line buffer. */ +static char * linebuf = NULL; +static size_t len = 0; + +bool parse_headline(FILE * input, FILE * output); + +bool parse_unigram(FILE * input, FILE * output); + +bool parse_bigram(FILE * input, FILE * output); + +static ssize_t my_getline(FILE * input){ + ssize_t result = getline(&linebuf, &len, input); + if ( result == -1 ) + return result; + + linebuf[strlen(linebuf) - 1] = '\0'; + return result; +} + +bool parse_headline(FILE * input, FILE * output) { + /* enter "\data" line */ + assert(taglib_add_tag(BEGIN_LINE, "\\data", 0, "model", + "count:N:total_freq")); + + /* read "\data" line */ + if ( !taglib_read(linebuf, line_type, values, required) ) { + fprintf(stderr, "error: k mixture model expected.\n"); + return false; + } + + assert(line_type == BEGIN_LINE); + TAGLIB_GET_TAGVALUE(const char *, model, (const char *)); + if ( !( strcmp("k mixture model", model) == 0 ) ){ + fprintf(stderr, "error: k mixture model expected.\n"); + return false; + } + + /* print header */ + fprintf(output, "\\data model interpolation\n"); + + return true; +} + +bool parse_body(FILE * input, FILE * output){ + taglib_push_state(); + + assert(taglib_add_tag(END_LINE, "\\end", 0, "", "")); + assert(taglib_add_tag(GRAM_1_LINE, "\\1-gram", 0, "", "")); + assert(taglib_add_tag(GRAM_2_LINE, "\\2-gram", 0, "", "")); + + do { + retry: + assert(taglib_read(linebuf, line_type, values, required)); + switch(line_type) { + case END_LINE: + fprintf(output, "\\end\n"); + goto end; + case GRAM_1_LINE: + fprintf(output, "\\1-gram\n"); + my_getline(input); + parse_unigram(input, output); + goto retry; + case GRAM_2_LINE: + fprintf(output, "\\2-gram\n"); + my_getline(input); + parse_bigram(input, output); + goto retry; + default: + assert(false); + } + } while (my_getline(input) != -1); + + end: + taglib_pop_state(); + return true; +} + +bool parse_unigram(FILE * input, FILE * output){ + taglib_push_state(); + + assert(taglib_add_tag(GRAM_1_ITEM_LINE, "\\item", 2, "freq", "count")); + + do { + assert(taglib_read(linebuf, line_type, values, required)); + switch(line_type) { + case GRAM_1_ITEM_LINE: { + /* handle \item in \1-gram */ + TAGLIB_GET_TOKEN(token, 0); + TAGLIB_GET_PHRASE_STRING(word, 1); + + /* remove the "<start>" in the uni-gram of interpolation model */ + if ( sentence_start == token ) + break; + + TAGLIB_GET_TAGVALUE(glong, freq, atol); + + /* ignore zero unigram freq item */ + if ( 0 != freq ) + fprintf(output, "\\item %d %s count %ld\n", token, word, freq); + break; + } + case END_LINE: + case GRAM_1_LINE: + case GRAM_2_LINE: + goto end; + default: + assert(false); + } + } while (my_getline(input) != -1); + + end: + taglib_pop_state(); + return true; +} + +bool parse_bigram(FILE * input, FILE * output){ + taglib_push_state(); + + assert(taglib_add_tag(GRAM_2_ITEM_LINE, "\\item", 4, + "count", "T:N_n_0:n_1:Mr")); + + do { + assert(taglib_read(linebuf, line_type, values, required)); + switch (line_type) { + case GRAM_2_ITEM_LINE:{ + /* handle \item in \2-gram */ + /* two strings */ + TAGLIB_GET_TOKEN(token1, 0); + TAGLIB_GET_PHRASE_STRING(word1, 1); + + TAGLIB_GET_TOKEN(token2, 2); + TAGLIB_GET_PHRASE_STRING(word2, 3); + + TAGLIB_GET_TAGVALUE(glong, count, atol); + fprintf(output, "\\item %d %s %d %s count %ld\n", + token1, word1, token2, word2, count); + break; + } + case END_LINE: + case GRAM_1_LINE: + case GRAM_2_LINE: + goto end; + default: + assert(false); + } + } while (my_getline(input) != -1); + + end: + taglib_pop_state(); + return true; +} + +int main(int argc, char * argv[]){ + FILE * input = stdin; + FILE * output = stdout; + + taglib_init(); + + values = g_ptr_array_new(); + required = g_hash_table_new(g_str_hash, g_str_equal); + + ssize_t result = my_getline(input); + if ( result == -1 ) { + fprintf(stderr, "empty file input.\n"); + exit(ENODATA); + } + + if (!parse_headline(input, output)) + exit(ENODATA); + + result = my_getline(input); + if ( result != -1 ) + parse_body(input, output); + + taglib_fini(); + + return 0; +} |