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
|
// $Id$
#ifndef moses_DummyScoreProducers_h
#define moses_DummyScoreProducers_h
#include "FeatureFunction.h"
namespace Moses
{
class WordsRange;
/** Calculates Distortion scores
*/
class DistortionScoreProducer : public StatefulFeatureFunction
{
public:
DistortionScoreProducer() : StatefulFeatureFunction("Distortion", 1) {}
float CalculateDistortionScore(const Hypothesis& hypo,
const WordsRange &prev, const WordsRange &curr, const int FirstGapPosition) const;
std::string GetScoreProducerWeightShortName(unsigned) const;
virtual const FFState* EmptyHypothesisState(const InputType &input) const;
virtual FFState* Evaluate(
const Hypothesis& cur_hypo,
const FFState* prev_state,
ScoreComponentCollection* accumulator) const;
virtual FFState* EvaluateChart(
const ChartHypothesis&,
int /* featureID */,
ScoreComponentCollection*) const {
CHECK(0); // feature function not valid in chart decoder
return NULL;
}
};
/** Doesn't do anything but provide a key into the global
* score array to store the word penalty in.
*/
class WordPenaltyProducer : public StatelessFeatureFunction
{
public:
WordPenaltyProducer() : StatelessFeatureFunction("WordPenalty",1) {}
std::string GetScoreProducerWeightShortName(unsigned) const;
virtual void Evaluate(
const Hypothesis& cur_hypo,
ScoreComponentCollection* accumulator) const;
virtual void EvaluateChart(
const ChartHypothesis&,
int /* featureID */,
ScoreComponentCollection*) const {
// needs to be implemented but does nothing
}
};
/** unknown word penalty */
class UnknownWordPenaltyProducer : public StatelessFeatureFunction
{
public:
UnknownWordPenaltyProducer() : StatelessFeatureFunction("!UnknownWordPenalty",1) {}
std::string GetScoreProducerWeightShortName(unsigned) const;
virtual bool ComputeValueInTranslationOption() const;
};
}
#endif
|
