mosesdecoder/moses2/parameters/SearchOptions.h

// -*- mode: c++; indent-tabs-mode: nil; tab-width: 2 -*-
#pragma once
#include <string>
#include <limits>
#include "OptionsBaseClass.h"
#include "../TypeDef.h"

namespace Moses2
{

bool is_syntax(SearchAlgorithm algo);

struct
    SearchOptions : public OptionsBaseClass {
  SearchAlgorithm algo;

  // stack decoding
  size_t stack_size;       // maxHypoStackSize;
  size_t stack_diversity;  // minHypoStackDiversity;
  bool disable_discarding;
  // Disable discarding of bad hypotheses from HypothesisStackNormal
  size_t max_phrase_length;
  size_t max_trans_opt_per_cov;
  size_t max_partial_trans_opt;
  // beam search
  float beam_width;

  int timeout;

  bool consensus; //! Use Consensus decoding  (DeNero et al 2009)

  // reordering options
  // bool  reorderingConstraint; //! use additional reordering constraints
  // bool  useEarlyDistortionCost;

  float early_discarding_threshold;
  float trans_opt_threshold;

  bool init(Parameter const& param);
  SearchOptions(Parameter const& param);
  SearchOptions();

  bool
  UseEarlyDiscarding() const {
    return early_discarding_threshold != -std::numeric_limits<float>::infinity();
  }

  bool
  update(std::map<std::string,xmlrpc_c::value>const& params);

};

}