blob: 2ffe67f988c62a0866212dc1a31412d0d48014ca (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
// $Id$
/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2006 University of Edinburgh
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
***********************************************************************/
#ifndef moses_LanguageModelIRST_h
#define moses_LanguageModelIRST_h
#include <string>
#include <vector>
#include "Factor.h"
#include "TypeDef.h"
#include "Util.h"
#include "LM/SingleFactor.h"
class lmContainer; // irst lm container for any lm type
class ngram;
class dictionary;
namespace Moses
{
class Phrase;
/** Implementation of single factor LM using IRST's code.
* This is the default LM for Moses and is available from the same sourceforge repository
*/
class LanguageModelIRST : public LanguageModelPointerState
{
protected:
mutable std::vector<int> m_lmIdLookup;
lmContainer* m_lmtb;
int m_unknownId; //code of OOV
int m_empty; //code of an empty position
int m_lmtb_sentenceStart; //lmtb symbols to initialize ngram with
int m_lmtb_sentenceEnd; //lmt symbol to initialize ngram with
int m_lmtb_size; //max ngram stored in the table
int m_lmtb_dub; //dictionary upperboud
std::string m_mapFilePath;
void CreateFactors(FactorCollection &factorCollection);
int GetLmID( const std::string &str ) const;
int GetLmID( const Factor *factor ) const;
dictionary* d;
public:
LanguageModelIRST(int dub);
~LanguageModelIRST();
bool Load(const std::string &filePath
, FactorType factorType
, size_t nGramOrder);
virtual LMResult GetValue(const std::vector<const Word*> &contextFactor, State* finalState = NULL) const;
void CleanUpAfterSentenceProcessing();
void InitializeBeforeSentenceProcessing();
void set_dictionary_upperbound(int dub) {
m_lmtb_size=dub ;
//m_lmtb->set_dictionary_upperbound(dub);
};
};
}
#endif
|
