MKLClassification.cpp

Go to the documentation of this file.

#include <shogun/classifier/mkl/MKLClassification.h>
#ifdef USE_SVMLIGHT
#include <shogun/classifier/svm/SVMLight.h>
#endif //USE_SVMLIGHT
#include <shogun/classifier/svm/LibSVM.h>

using namespace shogun;

CMKLClassification::CMKLClassification(CSVM* s) : CMKL(s)
{
    if (!s)
    {
#ifdef USE_SVMLIGHT
        s=new CSVMLight();
#endif //USE_SVMLIGHT
        if (!s)
            s=new CLibSVM();
        set_svm(s);
    }
}

CMKLClassification::~CMKLClassification()
{
}
float64_t CMKLClassification::compute_sum_alpha()
{
    float64_t suma=0;
    int32_t nsv=svm->get_num_support_vectors();
    for (int32_t i=0; i<nsv; i++)
        suma+=CMath::abs(svm->get_alpha(i));

    return suma;
}

void CMKLClassification::init_training()
{
    REQUIRE(m_labels, "Labels not set.\n");
    REQUIRE(m_labels->get_num_labels(), "Number of labels is zero.\n");
    REQUIRE(m_labels->get_label_type() == LT_BINARY, "Labels must be binary.\n");
}