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#ifndef _ALIGNMENT_H_
#define _ALIGNMENT_H_
#include <string>
#include <vector>
#include <boost/filesystem.hpp>
namespace fs = boost::filesystem;
using namespace std;
namespace extractor {
/**
* Data structure storing the word alignments for a parallel corpus.
*/
class Alignment {
public:
// Reads alignment from text file.
Alignment(const string& filename);
// Returns the alignment for a given sentence.
virtual vector<pair<int, int>> GetLinks(int sentence_index) const;
// Writes alignment to file in binary format.
void WriteBinary(const fs::path& filepath);
virtual ~Alignment();
protected:
Alignment();
private:
vector<vector<pair<int, int>>> alignments;
};
} // namespace extractor
#endif
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