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src/libsphinxbase/lm/ngram_model_dmp32.c

00001 /* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
00002 /* ====================================================================
00003  * Copyright (c) 1999-2007 Carnegie Mellon University.  All rights
00004  * reserved.
00005  *
00006  * Redistribution and use in source and binary forms, with or without
00007  * modification, are permitted provided that the following conditions
00008  * are met:
00009  *
00010  * 1. Redistributions of source code must retain the above copyright
00011  *    notice, this list of conditions and the following disclaimer. 
00012  *
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in
00015  *    the documentation and/or other materials provided with the
00016  *    distribution.
00017  *
00018  * This work was supported in part by funding from the Defense Advanced 
00019  * Research Projects Agency and the National Science Foundation of the 
00020  * United States of America, and the CMU Sphinx Speech Consortium.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND 
00023  * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
00024  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00025  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
00026  * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00027  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
00028  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
00029  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
00030  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
00031  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
00032  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033  *
00034  * ====================================================================
00035  *
00036  */
00037 /*
00038  * \file ngram_model_dmp32.c DMP32 format language models
00039  *
00040  * Author: David Huggins-Daines <dhuggins@cs.cmu.edu>
00041  */
00042 
00043 #include "ckd_alloc.h"
00044 #include "ngram_model_internal.h"
00045 
00046 static ngram_funcs_t ngram_model_dmp32_funcs;
00047 
00048 ngram_model_t *
00049 ngram_model_dmp32_read(cmd_ln_t *config,
00050                        const char *file_name,
00051                        logmath_t *lmath)
00052 {
00053     return NULL;
00054 }
00055 
00056 int
00057 ngram_model_dmp32_write(ngram_model_t *model,
00058                         const char *file_name)
00059 {
00060     return -1;
00061 }
00062 
00063 static int
00064 ngram_model_dmp32_apply_weights(ngram_model_t *model, float32 lw,
00065                               float32 wip, float32 uw)
00066 {
00067     return 0;
00068 }
00069 
00070 static int32
00071 ngram_model_dmp32_score(ngram_model_t *model, int32 wid,
00072                         int32 *history, int32 n_hist,
00073                         int32 *n_used)
00074 {
00075     return model->log_zero;
00076 }
00077 
00078 static int32
00079 ngram_model_dmp32_raw_score(ngram_model_t *model, int32 wid,
00080                             int32 *history, int32 n_hist,
00081                             int32 *n_used)
00082 {
00083     return model->log_zero;
00084 }
00085 
00086 static void
00087 ngram_model_dmp32_free(ngram_model_t *base)
00088 {
00089     ckd_free(base);
00090 }
00091 
00092 static ngram_funcs_t ngram_model_dmp32_funcs = {
00093     ngram_model_dmp32_free,          /* free */
00094     ngram_model_dmp32_apply_weights, /* apply_weights */
00095     ngram_model_dmp32_score,         /* score */
00096     ngram_model_dmp32_raw_score,     /* raw_score */
00097     NULL                             /* add_ug */
00098 };

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