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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
// $Id$
// vim:tabstop=2
/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2010 Hieu Hoang
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
***********************************************************************/
#pragma once
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <vector>
#include "Util.h"
#include "WordsRange.h"
#include "ScoreComponentCollection.h"
#include "Phrase.h"
#include "ChartTranslationOption.h"
#include "ObjectPool.h"
namespace Moses
{
class ChartHypothesis;
class ChartManager;
class RuleCubeItem;
typedef std::vector<ChartHypothesis*> ChartArcList;
class ChartHypothesis
{
friend std::ostream& operator<<(std::ostream&, const ChartHypothesis&);
protected:
#ifdef USE_HYPO_POOL
static ObjectPool<ChartHypothesis> s_objectPool;
#endif
const TargetPhrase &m_targetPhrase;
const ChartTranslationOption &m_transOpt;
WordsRange m_currSourceWordsRange;
std::vector<const FFState*> m_ffStates; /*! stateful feature function states */
ScoreComponentCollection m_scoreBreakdown /*! detailed score break-down by components (for instance language model, word penalty, etc) */
,m_lmNGram
,m_lmPrefix;
float m_totalScore;
ChartArcList *m_arcList; /*! all arcs that end at the same trellis point as this hypothesis */
const ChartHypothesis *m_winningHypo;
std::vector<const ChartHypothesis*> m_prevHypos;
ChartManager& m_manager;
unsigned m_id; /* pkoehn wants to log the order in which hypotheses were generated */
ChartHypothesis(); // not implemented
ChartHypothesis(const ChartHypothesis ©); // not implemented
public:
#ifdef USE_HYPO_POOL
void *operator new(size_t /* num_bytes */) {
void *ptr = s_objectPool.getPtr();
return ptr;
}
static void Delete(ChartHypothesis *hypo) {
s_objectPool.freeObject(hypo);
}
#else
static void Delete(ChartHypothesis *hypo) {
delete hypo;
}
#endif
ChartHypothesis(const ChartTranslationOption &, const RuleCubeItem &item,
ChartManager &manager);
~ChartHypothesis();
unsigned GetId() const { return m_id; }
const ChartTranslationOption &GetTranslationOption()const {
return m_transOpt;
}
const TargetPhrase &GetCurrTargetPhrase()const {
return m_targetPhrase;
}
const WordsRange &GetCurrSourceRange()const {
return m_currSourceWordsRange;
}
inline const ChartArcList* GetArcList() const {
return m_arcList;
}
inline const FFState* GetFFState( size_t featureID ) const {
return m_ffStates[ featureID ];
}
inline const ChartManager& GetManager() const { return m_manager; }
void CreateOutputPhrase(Phrase &outPhrase) const;
Phrase GetOutputPhrase() const;
int RecombineCompare(const ChartHypothesis &compare) const;
void CalcScore();
void AddArc(ChartHypothesis *loserHypo);
void CleanupArcList();
void SetWinningHypo(const ChartHypothesis *hypo);
const ScoreComponentCollection &GetScoreBreakdown() const {
return m_scoreBreakdown;
}
float GetTotalScore() const {
return m_totalScore;
}
const std::vector<const ChartHypothesis*> &GetPrevHypos() const {
return m_prevHypos;
}
const ChartHypothesis* GetPrevHypo(size_t pos) const {
return m_prevHypos[pos];
}
const Word &GetTargetLHS() const {
return GetCurrTargetPhrase().GetTargetLHS();
}
const ChartHypothesis* GetWinningHypothesis() const {
return m_winningHypo;
}
TO_STRING();
}; // class ChartHypothesis
}
|
