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-rw-r--r--media/sphinxbase/src/libsphinxbase/lm/lm3g_model.c258
1 files changed, 0 insertions, 258 deletions
diff --git a/media/sphinxbase/src/libsphinxbase/lm/lm3g_model.c b/media/sphinxbase/src/libsphinxbase/lm/lm3g_model.c
deleted file mode 100644
index e9943001e..000000000
--- a/media/sphinxbase/src/libsphinxbase/lm/lm3g_model.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
-/* ====================================================================
- * Copyright (c) 1999-2007 Carnegie Mellon University. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * This work was supported in part by funding from the Defense Advanced
- * Research Projects Agency and the National Science Foundation of the
- * United States of America, and the CMU Sphinx Speech Consortium.
- *
- * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
- * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
- * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * ====================================================================
- *
- */
-/*
- * \file lm3g_model.c Core Sphinx 3-gram code used in
- * DMP/DMP32/ARPA (for now) model code.
- *
- * Author: A cast of thousands, probably.
- */
-#include <string.h>
-#include <assert.h>
-#include <limits.h>
-
-#include "sphinxbase/listelem_alloc.h"
-#include "sphinxbase/ckd_alloc.h"
-#include "sphinxbase/err.h"
-
-#include "lm3g_model.h"
-
-void
-lm3g_tginfo_free(ngram_model_t *base, lm3g_model_t *lm3g)
-{
- if (lm3g->tginfo == NULL)
- return;
- listelem_alloc_free(lm3g->le);
- ckd_free(lm3g->tginfo);
-}
-
-void
-lm3g_tginfo_reset(ngram_model_t *base, lm3g_model_t *lm3g)
-{
- if (lm3g->tginfo == NULL)
- return;
- listelem_alloc_free(lm3g->le);
- memset(lm3g->tginfo, 0, base->n_counts[0] * sizeof(tginfo_t *));
- lm3g->le = listelem_alloc_init(sizeof(tginfo_t));
-}
-
-void
-lm3g_apply_weights(ngram_model_t *base,
- lm3g_model_t *lm3g,
- float32 lw, float32 wip, float32 uw)
-{
- int32 log_wip, log_uw, log_uniform_weight;
- int i;
-
- /* Precalculate some log values we will like. */
- log_wip = logmath_log(base->lmath, wip);
- log_uw = logmath_log(base->lmath, uw);
- log_uniform_weight = logmath_log(base->lmath, 1.0 - uw);
-
- for (i = 0; i < base->n_counts[0]; ++i) {
- int32 prob1, bo_wt, n_used;
-
- /* Backoff weights just get scaled by the lw. */
- bo_wt = (int32)(lm3g->unigrams[i].bo_wt1.l / base->lw);
- /* Unscaling unigram probs is a bit more complicated, so punt
- * it back to the general code. */
- prob1 = ngram_ng_prob(base, i, NULL, 0, &n_used);
- /* Now compute the new scaled probabilities. */
- lm3g->unigrams[i].bo_wt1.l = (int32)(bo_wt * lw);
- if (strcmp(base->word_str[i], "<s>") == 0) { /* FIXME: configurable start_sym */
- /* Apply language weight and WIP */
- lm3g->unigrams[i].prob1.l = (int32)(prob1 * lw) + log_wip;
- }
- else {
- /* Interpolate unigram probability with uniform. */
- prob1 += log_uw;
- prob1 = logmath_add(base->lmath, prob1, base->log_uniform + log_uniform_weight);
- /* Apply language weight and WIP */
- lm3g->unigrams[i].prob1.l = (int32)(prob1 * lw) + log_wip;
- }
- }
-
- for (i = 0; i < lm3g->n_prob2; ++i) {
- int32 prob2;
- /* Can't just punt this back to general code since it is quantized. */
- prob2 = (int32)((lm3g->prob2[i].l - base->log_wip) / base->lw);
- lm3g->prob2[i].l = (int32)(prob2 * lw) + log_wip;
- }
-
- if (base->n > 2) {
- for (i = 0; i < lm3g->n_bo_wt2; ++i) {
- lm3g->bo_wt2[i].l = (int32)(lm3g->bo_wt2[i].l / base->lw * lw);
- }
- for (i = 0; i < lm3g->n_prob3; i++) {
- int32 prob3;
- /* Can't just punt this back to general code since it is quantized. */
- prob3 = (int32)((lm3g->prob3[i].l - base->log_wip) / base->lw);
- lm3g->prob3[i].l = (int32)(prob3 * lw) + log_wip;
- }
- }
-
- /* Store updated values in the model. */
- base->log_wip = log_wip;
- base->log_uw = log_uw;
- base->log_uniform_weight = log_uniform_weight;
- base->lw = lw;
-}
-
-int32
-lm3g_add_ug(ngram_model_t *base,
- lm3g_model_t *lm3g, int32 wid, int32 lweight)
-{
- int32 score;
-
- /* This would be very bad if this happened! */
- assert(!NGRAM_IS_CLASSWID(wid));
-
- /* Reallocate unigram array. */
- lm3g->unigrams = ckd_realloc(lm3g->unigrams,
- sizeof(*lm3g->unigrams) * base->n_1g_alloc);
- memset(lm3g->unigrams + base->n_counts[0], 0,
- (base->n_1g_alloc - base->n_counts[0]) * sizeof(*lm3g->unigrams));
- /* Reallocate tginfo array. */
- lm3g->tginfo = ckd_realloc(lm3g->tginfo,
- sizeof(*lm3g->tginfo) * base->n_1g_alloc);
- memset(lm3g->tginfo + base->n_counts[0], 0,
- (base->n_1g_alloc - base->n_counts[0]) * sizeof(*lm3g->tginfo));
- /* FIXME: we really ought to update base->log_uniform *and*
- * renormalize all the other unigrams. This is really slow, so I
- * will probably just provide a function to renormalize after
- * adding unigrams, for anyone who really cares. */
- /* This could be simplified but then we couldn't do it in logmath */
- score = lweight + base->log_uniform + base->log_uw;
- score = logmath_add(base->lmath, score,
- base->log_uniform + base->log_uniform_weight);
- lm3g->unigrams[wid].prob1.l = score;
- /* This unigram by definition doesn't participate in any bigrams,
- * so its backoff weight and bigram pointer are both undefined. */
- lm3g->unigrams[wid].bo_wt1.l = 0;
- lm3g->unigrams[wid].bigrams = 0;
- /* Finally, increase the unigram count */
- ++base->n_counts[0];
- /* FIXME: Note that this can actually be quite bogus due to the
- * presence of class words. If wid falls outside the unigram
- * count, increase it to compensate, at the cost of no longer
- * really knowing how many unigrams we have :( */
- if (wid >= base->n_counts[0])
- base->n_counts[0] = wid + 1;
-
- return score;
-}
-
-#define INITIAL_SORTED_ENTRIES MAX_UINT16
-
-void
-init_sorted_list(sorted_list_t * l)
-{
- l->list = ckd_calloc(INITIAL_SORTED_ENTRIES, sizeof(sorted_entry_t));
- l->list[0].val.l = INT_MIN;
- l->list[0].lower = 0;
- l->list[0].higher = 0;
- l->free = 1;
- l->size = INITIAL_SORTED_ENTRIES;
-}
-
-void
-free_sorted_list(sorted_list_t * l)
-{
- free(l->list);
-}
-
-lmprob_t *
-vals_in_sorted_list(sorted_list_t * l)
-{
- lmprob_t *vals;
- int32 i;
-
- vals = ckd_calloc(l->free, sizeof(lmprob_t));
- for (i = 0; i < l->free; i++)
- vals[i] = l->list[i].val;
- return (vals);
-}
-
-int32
-sorted_id(sorted_list_t * l, int32 *val)
-{
- int32 i = 0;
-
- for (;;) {
- if (*val == l->list[i].val.l)
- return (i);
- if (*val < l->list[i].val.l) {
- if (l->list[i].lower == 0) {
-
- if (l->free >= l->size) {
- int newsize = l->size + INITIAL_SORTED_ENTRIES;
- l->list = ckd_realloc(l->list, sizeof(sorted_entry_t) * newsize);
- memset(l->list + l->size,
- 0, INITIAL_SORTED_ENTRIES * sizeof(sorted_entry_t));
- l->size = newsize;
- }
-
- l->list[i].lower = l->free;
- (l->free)++;
- i = l->list[i].lower;
- l->list[i].val.l = *val;
- return (i);
- }
- else
- i = l->list[i].lower;
- }
- else {
- if (l->list[i].higher == 0) {
-
- if (l->free >= l->size) {
- int newsize = l->size + INITIAL_SORTED_ENTRIES;
- l->list = ckd_realloc(l->list, sizeof(sorted_entry_t) * newsize);
- memset(l->list + l->size,
- 0, INITIAL_SORTED_ENTRIES * sizeof(sorted_entry_t));
- l->size = newsize;
- }
-
- l->list[i].higher = l->free;
- (l->free)++;
- i = l->list[i].higher;
- l->list[i].val.l = *val;
- return (i);
- }
- else
- i = l->list[i].higher;
- }
- }
-}
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