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/*
EGYPT Toolkit for Statistical Machine Translation
Written by Yaser Al-Onaizan, Jan Curin, Michael Jahr, Kevin Knight, John Lafferty, Dan Melamed, David Purdy, Franz Och, Noah Smith, and David Yarowsky.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.
*/
#include "NTables.h"
#include <iostream>
#include "defs.h"
#include <fstream>
#include "Parameter.h"
GLOBAL_PARAMETER(double,NTablesFactorGraphemes,"nSmooth","smoothing for fertility parameters (good value: 64): weight for wordlength-dependent fertility parameters",PARLEV_SMOOTH,64.0);
GLOBAL_PARAMETER(double,NTablesFactorGeneral,"nSmoothGeneral","smoothing for fertility parameters (default: 0): weight for word-independent fertility parameters",PARLEV_SMOOTH,0.0);
template <class VALTYPE>
void nmodel<VALTYPE>::printNTable(int noEW, const char* filename,
const Vector<WordEntry>& evlist,
bool actual) const
// prints the fertility table but with actual sourcce words (not their id)
{
cerr << "Dumping nTable to: " << filename << '\n';
ofstream of(filename);
VALTYPE p ;
WordIndex k, i ;
for(i=1; int(i) < noEW; i++){
if (evlist[i].freq > 0){
if (actual)
of << evlist[i].word << ' ' ;
else
of << i << ' ' ;
for( k=0; k < MAX_FERTILITY; k++){
p = getValue(i, k);
if (p <= PROB_SMOOTH)
p = 0;
of << p << ' ';
}
of << '\n';
}
}
}
template <class VALTYPE>
void nmodel<VALTYPE>::printRealNTable(int noEW, const char* filename,
const Vector<WordEntry>& evlist,
bool actual) const
// prints the fertility table but with actual sourcce words (not their id)
{
cerr << "Dumping nTable to: " << filename << '\n';
ofstream of(filename);
VALTYPE p ;
WordIndex k, i ;
for(i=1; int(i) < noEW; i++){
if (evlist[i].freq > 0){
if (actual)
of << evlist[i].word << ' ' ;
else
of << i << ' ' ;
for( k=0; k < MAX_FERTILITY; k++){
p = getValue(i, k);
// if (p <= PROB_SMOOTH)
// p = 0;
of << p << ' ';
}
of << '\n';
}
}
}
template <class VALTYPE>
bool nmodel<VALTYPE>::readNTable(const char *filename){
/* This function reads the n table from a file.
Each line is of the format: source_word_id p0 p1 p2 ... pn
This is the inverse operation of the printTable function.
NAS, 7/11/99
*/
ifstream inf(filename);
if(!inf.is_open()){
return false;
}
cerr << "Reading fertility table from " << filename << "\n";
if(!inf){
cerr << "\nERROR: Cannot open " << filename <<"\n";
return false;
}
VALTYPE prob;
WordIndex tok, i;
int nFert=0;
while(!inf.eof()){
nFert++;
inf >> ws >> tok;
if (tok > MAX_VOCAB_SIZE){
cerr << "NTables:readNTable(): unrecognized token id: " << tok
<<'\n';
exit(-1);
}
for(i = 0; i < MAX_FERTILITY; i++){
inf >> ws >> prob;
getRef(tok, i)=prob;
}
}
cerr << "Read " << nFert << " entries in fertility table.\n";
inf.close();
return true;
}
template <class VALTYPE>
bool nmodel<VALTYPE>::merge(nmodel<VALTYPE>& n,int noEW, const Vector<WordEntry>& evlist){
/* This function reads the n table from a file.
Each line is of the format: source_word_id p0 p1 p2 ... pn
This is the inverse operation of the printTable function.
NAS, 7/11/99
*/
VALTYPE p ;
WordIndex k, i ;
for(i=1; int(i) < noEW; i++){
if (evlist[i].freq > 0){
for( k=0; k < MAX_FERTILITY; k++){
p = n.getValue(i, k);
getRef(i,k)+=p;
}
}
}
return true;
}
template <class VALTYPE>
bool nmodel<VALTYPE>::readAugNTable(const char *filename){
/* This function reads the n table from a file.
Each line is of the format: source_word_id p0 p1 p2 ... pn
This is the inverse operation of the printTable function.
NAS, 7/11/99
*/
ifstream inf(filename);
if(!inf.is_open()){
return false;
}
cerr << "Reading fertility table from " << filename << "\n";
if(!inf){
cerr << "\nERROR: Cannot open " << filename <<"\n";
return false;
}
VALTYPE prob;
WordIndex tok, i;
int nFert=0;
while(!inf.eof()){
nFert++;
inf >> ws >> tok;
if (tok > MAX_VOCAB_SIZE){
cerr << "NTables:readNTable(): unrecognized token id: " << tok
<<'\n';
exit(-1);
}
for(i = 0; i < MAX_FERTILITY; i++){
inf >> ws >> prob;
getRef(tok, i)+=prob;
}
}
cerr << "Read " << nFert << " entries in fertility table.\n";
inf.close();
return true;
}
template class nmodel<COUNT>;
//template class nmodel<PROB>;
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