blob: a695e3ce87d6ec1fce36f63c60bd8d8bd40b2755 (
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
|
#pragma once
#include <string>
#include <map>
#include "StatefulFeatureFunction.h"
#include "FFState.h"
#include "moses/Phrase.h"
namespace Moses
{
class ConstrainedDecodingState : public FFState
{
public:
ConstrainedDecodingState() {
}
ConstrainedDecodingState(const Hypothesis &hypo);
ConstrainedDecodingState(const ChartHypothesis &hypo);
virtual size_t hash() const;
virtual bool operator==(const FFState& other) const;
const Phrase &GetPhrase() const {
return m_outputPhrase;
}
protected:
Phrase m_outputPhrase;
};
//////////////////////////////////////////////////////////////////
// only allow hypotheses which match reference
class ConstrainedDecoding : public StatefulFeatureFunction
{
public:
ConstrainedDecoding(const std::string &line);
void Load(AllOptions::ptr const& opts);
bool IsUseable(const FactorMask &mask) const {
return true;
}
FFState* EvaluateWhenApplied(
const Hypothesis& cur_hypo,
const FFState* prev_state,
ScoreComponentCollection* accumulator) const;
FFState* EvaluateWhenApplied(
const ChartHypothesis& /* cur_hypo */,
int /* featureID - used to index the state in the previous hypotheses */,
ScoreComponentCollection* accumulator) const;
virtual const FFState* EmptyHypothesisState(const InputType &input) const {
return new ConstrainedDecodingState();
}
std::vector<float> DefaultWeights() const;
void SetParameter(const std::string& key, const std::string& value);
protected:
std::vector<std::string> m_paths;
std::map<long, std::vector<Phrase> > m_constraints;
int m_maxUnknowns;
bool m_negate; // only keep translations which DON'T match the reference
bool m_soft;
};
}
|