Exemplo n.º 1
0
void CExactInferenceMethod::check_members()
{
	if (!m_labels)
		SG_ERROR("No labels set\n")

	if (m_labels->get_label_type() != LT_REGRESSION)
		SG_ERROR("Expected RegressionLabels\n")

	if (!m_features)
		SG_ERROR("No features set!\n")

	if (m_labels->get_num_labels() != m_features->get_num_vectors())
		SG_ERROR("Number of training vectors does not match number of labels\n")

	if(m_features->get_feature_class() == C_COMBINED)
	{
		CDotFeatures* feat =
				(CDotFeatures*)((CCombinedFeatures*)m_features)->
				get_first_feature_obj();

		if (!feat->has_property(FP_DOT))
			SG_ERROR("Specified features are not of type CFeatures\n")

		if (feat->get_feature_class() != C_DENSE)
			SG_ERROR("Expected Simple Features\n")

		if (feat->get_feature_type() != F_DREAL)
			SG_ERROR("Expected Real Features\n")

		SG_UNREF(feat);
	}
CRegressionLabels* CGaussianProcessRegression::apply_regression(CFeatures* data)
{

	if (data)
	{
		if(data->get_feature_class() == C_COMBINED)
		{
			CDotFeatures* feat =
					(CDotFeatures*)((CCombinedFeatures*)data)->
					get_first_feature_obj();

			if (!feat->has_property(FP_DOT))
				SG_ERROR("Specified features are not of type CFeatures\n")

			if (feat->get_feature_class() != C_DENSE)
				SG_ERROR("Expected Simple Features\n")

			if (feat->get_feature_type() != F_DREAL)
				SG_ERROR("Expected Real Features\n")

			SG_UNREF(feat);
		}

		else
		{
			if (!data->has_property(FP_DOT))
Exemplo n.º 3
0
CRegressionLabels* CGaussianProcessRegression::apply_regression(CFeatures* data)
{

	if (data)
	{
		if(data->get_feature_class() == C_COMBINED)
		{
			CDotFeatures* feat =
					(CDotFeatures*)((CCombinedFeatures*)data)->
					get_first_feature_obj();

			if (!feat->has_property(FP_DOT))
				SG_ERROR("Specified features are not of type CFeatures\n");

			if (feat->get_feature_class() != C_DENSE)
				SG_ERROR("Expected Simple Features\n");

			if (feat->get_feature_type() != F_DREAL)
				SG_ERROR("Expected Real Features\n");

			SG_UNREF(feat);
		}

		else
		{
			if (!data->has_property(FP_DOT))
				SG_ERROR("Specified features are not of type CFeatures\n");

			if (data->get_feature_class() != C_DENSE)
				SG_ERROR("Expected Simple Features\n");

			if (data->get_feature_type() != F_DREAL)
				SG_ERROR("Expected Real Features\n");
		}

		SG_UNREF(m_data);
		SG_REF(data);
		m_data = (CFeatures*)data;
		update_kernel_matrices();
	}

	else if (!m_data)
		SG_ERROR("No testing features!\n");

	else if (update_parameter_hash())
		update_kernel_matrices();

	if (m_return == GP_RETURN_COV)
	{
		CRegressionLabels* result =
				new CRegressionLabels(getCovarianceVector());

		return result;
	}

	if (m_return == GP_RETURN_MEANS)
	{
		CRegressionLabels* result =
				new CRegressionLabels(getMeanVector());

		return result;
	}

	else
	{

		SGVector<float64_t> mean_vector = getMeanVector();
		SGVector<float64_t> cov_vector = getCovarianceVector();

		index_t size = mean_vector.vlen+cov_vector.vlen;

		SGVector<float64_t> result_vector(size);

		for (index_t i = 0; i < size; i++)
		{
			if (i < mean_vector.vlen)
				result_vector[i] = mean_vector[i];
			else
				result_vector[i] = cov_vector[i-mean_vector.vlen];
		}

		CRegressionLabels* result =
				new CRegressionLabels(result_vector);

		return result;
	}

}