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#ifndef _ALIGNMENT_H_
#define _ALIGNMENT_H_
#include <string>
#include <vector>
#include <boost/serialization/serialization.hpp>
#include <boost/serialization/split_member.hpp>
#include <boost/serialization/utility.hpp>
#include <boost/serialization/vector.hpp>
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);
// Creates empty alignment.
Alignment();
// Returns the alignment for a given sentence.
virtual vector<pair<int, int>> GetLinks(int sentence_index) const;
virtual ~Alignment();
bool operator==(const Alignment& alignment) const;
private:
friend class boost::serialization::access;
template<class Archive> void serialize(Archive& ar, unsigned int) {
ar & alignments;
}
vector<vector<pair<int, int>>> alignments;
};
} // namespace extractor
#endif
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