42 #include <sphinxbase/err.h>
46 static int phone_loop_search_start(
ps_search_t *search);
47 static int phone_loop_search_step(
ps_search_t *search,
int frame_idx);
48 static int phone_loop_search_finish(
ps_search_t *search);
50 static void phone_loop_search_free(
ps_search_t *search);
51 static char const *phone_loop_search_hyp(
ps_search_t *search, int32 *out_score);
52 static int32 phone_loop_search_prob(
ps_search_t *search);
56 phone_loop_search_start,
57 phone_loop_search_step,
58 phone_loop_search_finish,
59 phone_loop_search_reinit,
60 phone_loop_search_free,
62 phone_loop_search_hyp,
63 phone_loop_search_prob,
64 phone_loop_search_seg_iter,
71 cmd_ln_t *config = ps_search_config(search);
72 acmod_t *acmod = ps_search_acmod(search);
88 pls->
window = cmd_ln_int32_r(config,
"-pl_window");
103 for (i = 0; i < pls->
n_phones; ++i) {
106 bin_mdef_pid2ssid(acmod->
mdef, i),
107 bin_mdef_pid2tmatid(acmod->
mdef, i));
113 E_INFO(
"State beam %d Phone exit beam %d Insertion penalty %d\n",
120 phone_loop_search_init(cmd_ln_t *config,
129 PS_SEARCH_TYPE_PHONE_LOOP, PS_DEFAULT_PL_SEARCH,
130 config, acmod, dict, NULL);
131 phone_loop_search_reinit(ps_search_base(pls), ps_search_dict(pls),
132 ps_search_dict2pid(pls));
134 return ps_search_base(pls);
141 for (gn = pls->
renorm; gn; gn = gnode_next(gn))
142 ckd_free(gnode_ptr(gn));
156 phone_loop_search_free_renorm(pls);
171 for (i = 0; i < pls->
n_phones; ++i) {
177 for (i = 0; i < pls->
window; i++)
179 phone_loop_search_free_renorm(pls);
196 for (i = 0; i < pls->
n_phones; ++i) {
209 for (i = 0; i < pls->
n_phones; ++i) {
213 if (hmm_frame(hmm) < frame_idx)
228 for (i = 0; i < pls->
n_phones; ++i) {
236 for (i = 0; i < pls->
n_phones; ++i) {
238 for (j = 0, itr = pls->
pen_buf_ptr + 1; j < pls->window; j++, itr++) {
250 int nf = frame_idx + 1;
254 for (i = 0; i < pls->
n_phones; ++i) {
257 if (hmm_frame(hmm) < frame_idx)
272 int nf = frame_idx + 1;
277 for (i = 0; i < pls->
n_phones; ++i) {
279 int32 newphone_score;
282 if (hmm_frame(hmm) != nf)
285 newphone_score = hmm_out_score(hmm) + pls->
pip;
288 for (j = 0; j < pls->
n_phones; ++j) {
291 if (hmm_frame(nhmm) < frame_idx
292 || newphone_score
BETTER_THAN hmm_in_score(nhmm)) {
293 hmm_enter(nhmm, newphone_score, hmm_out_history(hmm), nf);
301 phone_loop_search_step(
ps_search_t *search,
int frame_idx)
304 acmod_t *acmod = ps_search_acmod(search);
309 if (!ps_search_acmod(pls)->compallsen) {
320 E_INFO(
"Renormalizing Scores at frame %d, best score %d\n",
322 renormalize_hmms(pls, frame_idx, pls->
best_score);
326 evaluate_hmms(pls, senscr, frame_idx);
329 store_scores(pls, frame_idx);
332 prune_hmms(pls, frame_idx);
335 phone_transition(pls, frame_idx);
348 phone_loop_search_hyp(
ps_search_t *search, int32 *out_score)
350 E_WARN(
"Hypotheses are not returned from phone loop search");
358 E_WARN(
"Posterior probabilities are not returned from phone loop search");
365 E_WARN(
"Hypotheses are not returned from phone loop search");