/usr/include/torch/LinearLexicon.h is in libtorch3-dev 3.1-2.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// This file is part of Torch 3.1.
//
// All rights reserved.
//
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// modification, are permitted provided that the following conditions
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// 1. Redistributions of source code must retain the above copyright
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#ifndef LINEARLEXICON_INC
#define LINEARLEXICON_INC
#include "general.h"
#include "LexiconInfo.h"
#include "PhoneModels.h"
#include "DecodingHMM.h"
#include "SpeechHMM.h"
namespace Torch {
/**
This class is essentially an array of DecodingHMM instances,
representing the HMM's for each pronunciation we can recognise.
The ordering of this array conforms to the ordering the
LexInfo instance that is passed as a parameter to the
constructor.
@author Darren Moore (moore@idiap.ch)
*/
class LinearLexicon
{
public:
LexiconInfo *lex_info ;
PhoneModels *phone_models ;
int n_models ;
DecodingHMM **models ;
int total_states ;
/* Constructors / destructor */
/// Uses the phoneme DecodingHMM instances in 'phone_models_',
/// and the phonetic transcription info for the pronunciations
/// as defined in 'lex_info_' and creates a complete DecodingHMM
/// instance for each pronunciation.
LinearLexicon( LexiconInfo *lex_info_ , PhoneModels *phone_models_ ) ;
/// Extracts LexiconInfo pointer from 'speech_hmm' then proceeds
/// in the same way as the first constructor.
LinearLexicon( SpeechHMM *speech_hmm , PhoneModels *phone_models_ ) ;
virtual ~LinearLexicon() ;
/* Methods */
/// Internal function. Both constructors call this to create the
/// required data structures.
void createLinearLexicon( LexiconInfo *lex_info_ , PhoneModels *phone_models_ ) ;
/// Returns the number of states in a particular model including
/// non-emitting states.
int nStatesInModel( int model ) ;
/// Calculates the emission probability for a state in a particular
/// word model using the current input vector. Only checks for
/// out of range input parameters in the debug version.
real calcEmissionProb( int model , int state ) ;
/// Returns the number of successor states, the successor states
/// themselves and the associated log transition probabilities.
/// Does not copy data - just returns pointers to the originals.
void getSuccessorInfo( int model , int state , short *n_sucs ,
short **sucs , real **log_trans_probs ) ;
#ifdef DEBUG
void outputText() ;
#endif
};
}
#endif
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