blob: b36ceeb9095b45f4adf9a4b5e1b84f183e7d3f02 (
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
|
#ifndef _GRAMMAR_EXTRACTOR_H_
#define _GRAMMAR_EXTRACTOR_H_
#include <memory>
#include <string>
#include <vector>
using namespace std;
namespace extractor {
class Alignment;
class DataArray;
class Grammar;
class HieroCachingRuleFactory;
class Precomputation;
class Rule;
class Scorer;
class SuffixArray;
class Vocabulary;
/**
* Class wrapping all the logic for extracting the synchronous context free
* grammars.
*/
class GrammarExtractor {
public:
GrammarExtractor(
shared_ptr<SuffixArray> source_suffix_array,
shared_ptr<DataArray> target_data_array,
shared_ptr<Alignment> alignment,
shared_ptr<Precomputation> precomputation,
shared_ptr<Scorer> scorer,
int min_gap_size,
int max_rule_span,
int max_nonterminals,
int max_rule_symbols,
int max_samples,
bool require_tight_phrases);
// For testing only.
GrammarExtractor(shared_ptr<Vocabulary> vocabulary,
shared_ptr<HieroCachingRuleFactory> rule_factory);
// Converts the sentence to a vector of word ids and uses the RuleFactory to
// extract the SCFG rules which may be used to decode the sentence.
Grammar GetGrammar(const string& sentence);
private:
// Splits the sentence in a vector of words.
vector<string> TokenizeSentence(const string& sentence);
// Maps the words to word ids.
vector<int> AnnotateWords(const vector<string>& words);
shared_ptr<Vocabulary> vocabulary;
shared_ptr<HieroCachingRuleFactory> rule_factory;
};
} // namespace extractor
#endif
|
