mosesdecoder/phrase-extract/extract-lex.h
2013-06-10 18:11:55 +01:00

124 lines
3.1 KiB
C++

#pragma once
#include <map>
#include <set>
#include <sstream>
#include <fstream>
#include <iostream>
namespace MosesTraining
{
//! convert string to variable of type T. Used to reading floats, int etc from files
template<typename T>
inline T Scan(const std::string &input)
{
std::stringstream stream(input);
T ret;
stream >> ret;
return ret;
}
//! speeded up version of above
template<typename T>
inline void Scan(std::vector<T> &output, const std::vector< std::string > &input)
{
output.resize(input.size());
for (size_t i = 0 ; i < input.size() ; i++) {
output[i] = Scan<T>( input[i] );
}
}
inline void Tokenize(std::vector<std::string> &output
, const std::string& str
, const std::string& delimiters = " \t")
{
// Skip delimiters at beginning.
std::string::size_type lastPos = str.find_first_not_of(delimiters, 0);
// Find first "non-delimiter".
std::string::size_type pos = str.find_first_of(delimiters, lastPos);
while (std::string::npos != pos || std::string::npos != lastPos) {
// Found a token, add it to the vector.
output.push_back(str.substr(lastPos, pos - lastPos));
// Skip delimiters. Note the "not_of"
lastPos = str.find_first_not_of(delimiters, pos);
// Find next "non-delimiter"
pos = str.find_first_of(delimiters, lastPos);
}
}
// speeded up version of above
template<typename T>
inline void Tokenize( std::vector<T> &output
, const std::string &input
, const std::string& delimiters = " \t")
{
std::vector<std::string> stringVector;
Tokenize(stringVector, input, delimiters);
return Scan<T>(output, stringVector );
}
class WordCount
{
friend std::ostream& operator<<(std::ostream&, const WordCount&);
public:
float m_count;
std::map<const std::string*, WordCount> m_coll;
WordCount()
:m_count(0) {
}
//WordCount(const WordCount &copy);
WordCount(float count)
:m_count(count) {
}
void AddCount(float incr);
std::map<const std::string*, WordCount> &GetColl() {
return m_coll;
}
const std::map<const std::string*, WordCount> &GetColl() const {
return m_coll;
}
const float GetCount() const {
return m_count;
}
};
class Vocab
{
std::set<std::string> m_coll;
public:
const std::string *GetOrAdd(const std::string &word);
};
class ExtractLex
{
Vocab m_vocab;
std::map<const std::string*, WordCount> m_collS2T, m_collT2S;
void Process(const std::string *target, const std::string *source);
void Process(WordCount &wcIn, const std::string *out);
void ProcessUnaligned(std::vector<std::string> &toksTarget, std::vector<std::string> &toksSource
, const std::vector<bool> &m_sourceAligned, const std::vector<bool> &m_targetAligned);
void Output(const std::map<const std::string*, WordCount> &coll, std::ofstream &outStream);
public:
void Process(std::vector<std::string> &toksTarget, std::vector<std::string> &toksSource, std::vector<std::string> &toksAlign, size_t lineCount);
void Output(std::ofstream &streamLexS2T, std::ofstream &streamLexT2S);
};
} // namespace