#ifndef _CSENTROPY_H_ #define _CSENTROPY_H_ #include <vector> #include "sparse_vector.h" namespace training { class CandidateSet; class CandidateSetEntropy { public: explicit CandidateSetEntropy(const CandidateSet& cs) : cands_(cs) {} // compute the entropy (expected log likelihood) of a CandidateSet // (optional) the gradient of the entropy with respect to params double operator()(const std::vector<double>& params, SparseVector<double>* g = NULL) const; private: const CandidateSet& cands_; }; }; #endif