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#include "Point.h"
#include <cmath>
#include <cstdlib>
#include "util/exception.hh"
#include "util/random.hh"
#include "FeatureStats.h"
#include "Optimizer.h"
using namespace std;
namespace MosesTuning
{
vector<unsigned> Point::m_opt_indices;
unsigned Point::m_dim = 0;
map<unsigned,statscore_t> Point::m_fixed_weights;
unsigned Point::m_pdim = 0;
unsigned Point::m_ncall = 0;
vector<parameter_t> Point::m_min;
vector<parameter_t> Point::m_max;
Point::Point() : vector<parameter_t>(m_dim), m_score(0.0) {}
//Can initialize from a vector of dim or m_pdim
Point::Point(const vector<parameter_t>& init,
const vector<parameter_t>& min,
const vector<parameter_t>& max)
: vector<parameter_t>(Point::m_dim), m_score(0.0)
{
m_min.resize(Point::m_dim);
m_max.resize(Point::m_dim);
if (init.size() == m_dim) {
for (unsigned int i = 0; i < Point::m_dim; i++) {
operator[](i) = init[i];
m_min[i] = min[i];
m_max[i] = max[i];
}
} else {
UTIL_THROW_IF(init.size() != m_pdim, util::Exception, "Error");
UTIL_THROW_IF(m_opt_indices.size() != Point::m_dim, util::Exception, "Error");
for (unsigned int i = 0; i < Point::m_dim; i++) {
operator[](i) = init[m_opt_indices[i]];
m_min[i] = min[m_opt_indices[i]];
m_max[i] = max[m_opt_indices[i]];
}
}
}
Point::~Point() {}
void Point::Randomize()
{
UTIL_THROW_IF(m_min.size() != Point::m_dim, util::Exception, "Error");
UTIL_THROW_IF(m_max.size() != Point::m_dim, util::Exception, "Error");
for (unsigned int i = 0; i < size(); i++)
operator[](i) = util::rand_incl(m_min[i], m_max[i]);
}
double Point::operator*(const FeatureStats& F) const
{
m_ncall++; // to track performance
double prod = 0.0;
if (OptimizeAll())
for (unsigned i=0; i<size(); i++)
prod += operator[](i) * F.get(i);
else {
for (unsigned i = 0; i < size(); i++)
prod += operator[](i) * F.get(m_opt_indices[i]);
for(map<unsigned, float>::iterator it = m_fixed_weights.begin();
it != m_fixed_weights.end(); ++it)
prod += it->second * F.get(it->first);
}
return prod;
}
const Point Point::operator+(const Point& p2) const
{
UTIL_THROW_IF(p2.size() != size(), util::Exception, "Error");
Point Res(*this);
for (unsigned i = 0; i < size(); i++) {
Res[i] += p2[i];
}
Res.m_score = kMaxFloat;
return Res;
}
void Point::operator+=(const Point& p2)
{
UTIL_THROW_IF(p2.size() != size(), util::Exception, "Error");
for (unsigned i = 0; i < size(); i++) {
operator[](i) += p2[i];
}
m_score = kMaxFloat;
}
const Point Point::operator*(float l) const
{
Point Res(*this);
for (unsigned i = 0; i < size(); i++) {
Res[i] *= l;
}
Res.m_score = kMaxFloat;
return Res;
}
ostream& operator<<(ostream& o, const Point& P)
{
vector<parameter_t> w;
P.GetAllWeights(w);
for (unsigned int i = 0; i < Point::m_pdim; i++) {
o << w[i] << " ";
}
return o;
}
void Point::NormalizeL2()
{
parameter_t norm=0.0;
for (unsigned int i = 0; i < size(); i++)
norm += operator[](i) * operator[](i);
if (norm != 0.0) {
norm = sqrt(norm);
for (unsigned int i = 0; i < size(); i++)
operator[](i) /= norm;
}
}
void Point::NormalizeL1()
{
parameter_t norm = 0.0;
for (unsigned int i = 0; i < size(); i++)
norm += abs(operator[](i));
if (norm != 0.0) {
for (unsigned int i = 0; i < size(); i++)
operator[](i) /= norm;
}
}
void Point::GetAllWeights(vector<parameter_t>& w) const
{
if (OptimizeAll()) {
w = *this;
} else {
w.resize(m_pdim);
for (unsigned int i = 0; i < size(); i++)
w[m_opt_indices[i]] = operator[](i);
for (map<unsigned,float>::const_iterator it = m_fixed_weights.begin();
it != m_fixed_weights.end(); ++it) {
w[it->first]=it->second;
}
}
}
}
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