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#ifndef MERT_POINT_H_
#define MERT_POINT_H_
#include <ostream>
#include <map>
#include <vector>
#include "Types.h"
class FeatureStats;
class Optimizer;
/**
* A class that handles the subset of the Feature weight on which
* we run the optimization.
*/
class Point : public std::vector<parameter_t>
{
friend class Optimizer;
private:
/**
* The indices over which we optimize.
*/
static std::vector<unsigned int> m_opt_indices;
/**
* Dimension of m_opt_indices and of the parent vector.
*/
static unsigned int m_dim;
/**
* Fixed weights in case of partial optimzation.
*/
static std::map<unsigned int,parameter_t> m_fixed_weights;
/**
* Total size of the parameter space; we have
* m_pdim = FixedWeight.size() + optinidices.size().
*/
static unsigned int m_pdim;
static unsigned int m_ncall;
/**
* The limits for randomization, both vectors are of full length, m_pdim.
*/
static std::vector<parameter_t> m_min;
static std::vector<parameter_t> m_max;
statscore_t m_score;
public:
static unsigned int getdim() { return m_dim; }
static void setdim(std::size_t d) { m_dim = d; }
static unsigned int getpdim() { return m_pdim; }
static void setpdim(std::size_t pd) { m_pdim = pd; }
static void set_optindices(const std::vector<unsigned int>& indices) {
m_opt_indices = indices;
}
static const std::vector<unsigned int>& get_optindices() {
return m_opt_indices;
}
static bool OptimizeAll() {
return m_fixed_weights.empty();
}
Point();
Point(const std::vector<parameter_t>& init,
const std::vector<parameter_t>& min,
const std::vector<parameter_t>& max);
~Point();
void Randomize();
// Compute the feature function
double operator*(const FeatureStats&) const;
const Point operator+(const Point&) const;
void operator+=(const Point&);
const Point operator*(float) const;
/**
* Write the Whole featureweight to a stream (ie m_pdim float).
*/
friend std::ostream& operator<<(std::ostream& o,const Point& P);
void Normalize() { NormalizeL2(); }
void NormalizeL2();
void NormalizeL1();
/**
* Return a vector of size m_pdim where all weights have been
* put (including fixed ones).
*/
void GetAllWeights(std::vector<parameter_t>& w) const;
statscore_t GetScore() const { return m_score; }
void SetScore(statscore_t score) { m_score = score; }
};
#endif // MERT_POINT_H
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