blob: db4032f760cc4ab922b9aa4d3c0e21230bbac666 (
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
|
#ifndef _KLM_FF_H_
#define _KLM_FF_H_
#include <vector>
#include <string>
#include "ff_factory.h"
#include "ff.h"
template <class Model> struct KLanguageModelImpl;
// the supported template types are instantiated explicitly
// in ff_klm.cc.
template <class Model>
class KLanguageModel : public FeatureFunction {
public:
// param = "filename.lm [-o n]"
KLanguageModel(const std::string& param);
~KLanguageModel();
virtual void FinalTraversalFeatures(const void* context,
SparseVector<double>* features) const;
static std::string usage(bool param,bool verbose);
protected:
virtual void TraversalFeaturesImpl(const SentenceMetadata& smeta,
const HG::Edge& edge,
const std::vector<const void*>& ant_contexts,
SparseVector<double>* features,
SparseVector<double>* estimated_features,
void* out_context) const;
private:
int fid_; // LanguageModel
int oov_fid_; // LanguageModel_OOV
int emit_fid_; // LanguageModel_Emit [only used for class-based LMs]
KLanguageModelImpl<Model>* pimpl_;
};
struct KLanguageModelFactory : public FactoryBase<FeatureFunction> {
FP Create(std::string param) const;
std::string usage(bool params,bool verbose) const;
};
#endif
|
