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// For now, the individual features are not kept.
#ifndef SEARCH_WEIGHTS__
#define SEARCH_WEIGHTS__
#include "search/types.hh"
#include "util/exception.hh"
#include "util/string_piece.hh"
#include <boost/unordered_map.hpp>
#include <string>
namespace search {
class WeightParseException : public util::Exception {
public:
WeightParseException() {}
~WeightParseException() throw() {}
};
class Weights {
public:
// Parses weights, sets lm_weight_, removes it from map_.
explicit Weights(StringPiece text);
// Just the three scores we care about adding.
Weights(Score lm, Score oov, Score word_penalty);
Score DotNoLM(StringPiece text) const;
Score LM() const { return lm_; }
Score OOV() const { return oov_; }
Score WordPenalty() const { return word_penalty_; }
// Mostly for testing.
const boost::unordered_map<std::string, Score> &GetMap() const { return map_; }
private:
float Steal(const std::string &str);
typedef boost::unordered_map<std::string, Score> Map;
Map map_;
Score lm_, oov_, word_penalty_;
};
} // namespace search
#endif // SEARCH_WEIGHTS__
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