/usr/include/irstlm/mdiadapt.h is in libirstlm-dev 6.00.05-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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IrstLM: IRST Language Model Toolkit
Copyright (C) 2006 Marcello Federico, ITC-irst Trento, Italy
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
******************************************************************************/
// Adapted LM classes: extension of interp classes
#ifndef MF_MDIADAPTLM_H
#define MF_MDIADAPTLM_H
#include "ngramcache.h"
#include "normcache.h"
#include "interplm.h"
#define DONT_PRINT 1000000
namespace irstlm {
class mdiadaptlm:public interplm
{
int adaptlev;
interplm* forelm;
double zeta0;
double oovscaling;
bool m_save_per_level;
static bool mdiadaptlm_cache_enable;
protected:
normcache *cache;
//to improve access speed
NGRAMCACHE_t** probcache;
NGRAMCACHE_t** backoffcache;
int max_caching_level;
int saveARPA_per_word(char *filename,int backoff=0,char* subdictfile=NULL);
int saveARPA_per_level(char *filename,int backoff=0,char* subdictfile=NULL);
int saveBIN_per_word(char *filename,int backoff=0,char* subdictfile=NULL,int mmap=0);
int saveBIN_per_level(char *filename,int backoff=0,char* subdictfile=NULL,int mmap=0);
public:
mdiadaptlm(char* ngtfile,int depth=0,TABLETYPE tt=FULL);
inline normcache* get_zetacache() {
return cache;
}
inline NGRAMCACHE_t* get_probcache(int level);
inline NGRAMCACHE_t* get_backoffcache(int level);
void create_caches(int mcl);
void init_caches();
void init_caches(int level);
void delete_caches();
void delete_caches(int level);
void check_cache_levels();
void check_cache_levels(int level);
void reset_caches();
void reset_caches(int level);
void caches_stat();
double gis_step;
double zeta(ngram ng,int size);
int discount(ngram ng,int size,double& fstar,double& lambda,int cv=0);
int bodiscount(ngram ng,int size,double& fstar,double& lambda,double& bo);
virtual int compute_backoff();
virtual int compute_backoff_per_level();
virtual int compute_backoff_per_word();
double backunig(ngram ng);
double foreunig(ngram ng);
int adapt(char* ngtfile,int alev=1,double gis_step=0.4);
int scalefact(char* ngtfile);
int savescalefactor(char* filename);
double scalefact(ngram ng);
double prob(ngram ng,int size);
double prob(ngram ng,int size,double& fstar,double& lambda, double& bo);
double prob2(ngram ng,int size,double & fstar);
double txclprob(ngram ng,int size);
int saveASR(char *filename,int backoff,char* subdictfile=NULL);
int saveMT(char *filename,int backoff,char* subdictfile=NULL,int resolution=10000000,double decay=0.999900);
int saveARPA(char *filename,int backoff=0,char* subdictfile=NULL){
if (m_save_per_level){
cerr << " per level ...";
return saveARPA_per_level(filename, backoff, subdictfile);
}else{
cerr << " per word ...";
return saveARPA_per_word(filename, backoff, subdictfile);
}
}
int saveBIN(char *filename,int backoff=0,char* subdictfile=NULL,int mmap=0){
if (m_save_per_level){
cerr << " per level ...";
return saveBIN_per_level(filename, backoff, subdictfile, mmap);
}else{
cerr << " per word ...";
return saveBIN_per_word(filename, backoff, subdictfile, mmap);
}
}
inline void save_per_level(bool value){ m_save_per_level=value; }
inline bool save_per_level() const { return m_save_per_level; }
int netsize();
~mdiadaptlm();
double myround(double x) {
long int value = (long int) x;
return (x-value)>0.500?value+1.0:(double)value;
}
inline static bool is_train_cache_enabled() {
VERBOSE(3,"inline static bool is_train_cache_enabled() " << mdiadaptlm_cache_enable << std::endl);
return mdiadaptlm_cache_enable;
}
};
}//namespace irstlm
#endif
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