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#include "OptimizerFactory.h"
#include "Optimizer.h"
using namespace std;
namespace MosesTuning
{
vector<string> OptimizerFactory::m_type_names;
void OptimizerFactory::SetTypeNames()
{
if (m_type_names.empty()) {
m_type_names.resize(NOPTIMIZER);
m_type_names[POWELL] = "powell";
m_type_names[RANDOM_DIRECTION] = "random-direction";
m_type_names[RANDOM] = "random";
// Add new type there
}
}
vector<string> OptimizerFactory::GetTypeNames()
{
if (m_type_names.empty())
SetTypeNames();
return m_type_names;
}
OptimizerFactory::OptimizerType OptimizerFactory::GetOptimizerType(const string& type)
{
unsigned int t;
if (m_type_names.empty())
SetTypeNames();
for (t = 0; t < m_type_names.size(); t++)
if (m_type_names[t] == type)
break;
return((OptimizerType)t);
}
Optimizer* OptimizerFactory::BuildOptimizer(unsigned dim,
const vector<unsigned>& i2o,
const std::vector<bool>& positive,
const vector<parameter_t>& start,
const string& type,
unsigned int nrandom)
{
OptimizerType opt_type = GetOptimizerType(type);
if (opt_type == NOPTIMIZER) {
cerr << "Error: unknown Optimizer type " << type << endl;
cerr << "Known Algorithm are:" << endl;
unsigned int t;
for (t = 0; t < m_type_names.size(); t++)
cerr << m_type_names[t] << endl;
throw ("unknown Optimizer Type");
}
switch (opt_type) {
case POWELL:
return new SimpleOptimizer(dim, i2o, positive, start, nrandom);
break;
case RANDOM_DIRECTION:
return new RandomDirectionOptimizer(dim, i2o, positive, start, nrandom);
break;
case RANDOM:
return new RandomOptimizer(dim, i2o, positive, start, nrandom);
break;
default:
cerr << "Error: unknown optimizer" << type << endl;
return NULL;
}
}
}
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