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
|
#ifndef _FF_CONTEXT_H_
#define _FF_CONTEXT_H_
#include <vector>
#include <boost/xpressive/xpressive.hpp>
#include "ff.h"
using namespace boost::xpressive;
using namespace std;
class RuleContextFeatures : public FeatureFunction {
public:
RuleContextFeatures(const string& param);
protected:
virtual void TraversalFeaturesImpl(const SentenceMetadata& smeta,
const Hypergraph::Edge& edge,
const vector<const void*>& ant_contexts,
SparseVector<double>* features,
SparseVector<double>* estimated_features,
void* context) const;
virtual void PrepareForInput(const SentenceMetadata& smeta);
virtual void ParseArgs(const string& in);
virtual string Escape(const string& x) const;
virtual void ReplaceMacroWithString(string& feature_instance,
bool token_vs_label,
int relative_location,
const string& actual_token) const;
virtual void ReplaceTokenMacroWithString(string& feature_instance,
int relative_location,
const string& actual_token) const;
virtual void ReplaceLabelMacroWithString(string& feature_instance,
int relative_location,
const string& actual_token) const;
virtual void Error(const string&) const;
private:
vector<int> token_relative_locations, label_relative_locations;
string feature_template;
vector<WordID> current_input;
WordID kSOS, kEOS;
sregex macro_regex;
};
#endif
|
