C++ (Cpp) CDotFeatures::dense_dot_range Examples

Example #1

File: LatentSVM.cpp Project: coodoing/shogun

CLatentLabels* CLatentSVM::apply()
{
	if (!m_model)
		SG_ERROR("LatentModel is not set!\n");

	if (!features)
		return NULL;

	index_t num_examples = m_model->get_num_vectors();
	CLatentLabels* hs = new CLatentLabels(num_examples);
	CBinaryLabels* ys = new CBinaryLabels(num_examples);
	hs->set_labels(ys);
	m_model->set_labels(hs);

	for (index_t i = 0; i < num_examples; ++i)
	{
		/* find h for the example */
		CData* h = m_model->infer_latent_variable(w, i);
		hs->add_latent_label(h);
	}

	/* compute the y labels */
	CDotFeatures* x = m_model->get_psi_feature_vectors();
	x->dense_dot_range(ys->get_labels().vector, 0, num_examples, NULL, w.vector, w.vlen, 0.0);

	return hs;
}

Example #2

int CMulticlassOCAS::msvm_full_compute_output(float64_t *output, void* user_data)
{
	float64_t* W = ((mocas_data*)user_data)->W;
	uint32_t nY = ((mocas_data*)user_data)->nY;
	uint32_t nDim = ((mocas_data*)user_data)->nDim;
	uint32_t nData = ((mocas_data*)user_data)->nData;
	float64_t* output_values = ((mocas_data*)user_data)->output_values;
	CDotFeatures* features = ((mocas_data*)user_data)->features;

	uint32_t i, y;

	for(y=0; y<nY; y++)
	{
		features->dense_dot_range(output_values,0,nData,NULL,&W[nDim*y],nDim,0.0);
		for (i=0; i<nData; i++)
			output[LIBOCAS_INDEX(y,i,nY)] = output_values[i];
	}

	return 0;
}