Edinburgh Speech Tools 2.4-release
EST_dynamic_model.h
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32/*************************************************************************/
33/* Author : Simon King */
34/* Date : June 1998 */
35/*-----------------------------------------------------------------------*/
36/* Dynamical models for ASR */
37/* */
38/*=======================================================================*/
39
40#include <cstdlib>
41#include <cstdio>
42#include <fstream>
43#include "EST.h"
44#include "EST_model_types.h"
45
46// for now, CSMM means continuous-state Markov model
47class CSMM
48{
49public:
56 refcounted_EST_DVectorP mean_initial_x;
58};
59
60bool operator ==(const CSMM &, const CSMM &);
61ostream& operator <<(ostream &s, const CSMM &);
62
63/// somewhere to keep the model parameters
65{
68};
69
70/// somewhere to keep the models
72{
74 CSMM_parameter_set parameter_set;
75};
76
77
78
79ostream& operator <<(ostream &s, const CSMM_set &ms);
80
81bool
82create_empty_CSMM(EST_String model_name,
83 CSMM_set &model_set,
84 const int model_order,
85 const int observation_order);
86
87/// at last, some interesting functions
88bool
89E_step(CSMM &model,
90 EST_DMatrix &mean_initial_covar_x,
91 const EST_TrackList &train_data,
92 const bool trace);
93bool
94M_step(CSMM &model,
95 const bool trace);
96bool
97EM_shared_hidden_space(CSMM_set &models,
98 const int model_order,
99 EST_DMatrix &mean_initial_covar_x,
100 const EST_TrackList &train_data,
101 const int iterations,
102 const bool trace);
103EST_write_status
104save_CSMM_set(CSMM_set &model_set, const EST_String &dirname, const EST_String &type);
105
106EST_read_status
107load_CSMM_set(CSMM_set &model_set, const EST_String &dirname);
108
109double
110CSMM_Mahalanobis_distance(const CSMM &model, const EST_Track &t);
somewhere to keep the model parameters
somewhere to keep the models
an accumulator to be owned by every model