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LatentSOSVM.cpp
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LatentSOSVM.cpp
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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Written (W) 2012 Viktor Gal
* Copyright (C) 2012 Viktor Gal
*/
#include <shogun/latent/LatentSOSVM.h>
#ifdef USE_GPL_SHOGUN
#include <shogun/structure/DualLibQPBMSOSVM.h>
using namespace shogun;
CLatentSOSVM::CLatentSOSVM()
: CLinearLatentMachine()
{
register_parameters();
m_so_solver=NULL;
}
CLatentSOSVM::CLatentSOSVM(CLatentModel* model, CLinearStructuredOutputMachine* so_solver, float64_t C)
: CLinearLatentMachine(model, C)
{
register_parameters();
set_so_solver(so_solver);
}
CLatentSOSVM::~CLatentSOSVM()
{
SG_UNREF(m_so_solver);
}
CLatentLabels* CLatentSOSVM::apply_latent()
{
return NULL;
}
void CLatentSOSVM::set_so_solver(CLinearStructuredOutputMachine* so)
{
SG_REF(so);
SG_UNREF(m_so_solver);
m_so_solver = so;
}
float64_t CLatentSOSVM::do_inner_loop(float64_t cooling_eps)
{
float64_t lambda = 1/m_C;
CDualLibQPBMSOSVM* so = new CDualLibQPBMSOSVM();
so->set_lambda(lambda);
so->train();
/* copy the resulting w */
set_w(so->get_w().clone());
/* get the primal objective value */
float64_t po = so->get_result().Fp;
SG_UNREF(so);
return po;
}
void CLatentSOSVM::register_parameters()
{
m_parameters->add((CSGObject**)&m_so_solver, "so_solver", "Structured Output Solver.");
}
#endif //USE_GPL_SHOGUN