/* file: linear_regression_quality_metric_set_batch.h */
/*******************************************************************************
* Copyright 2014 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/

/*
//++
//  Interface for the linear regression quality metric batch.
//--
*/

#ifndef __LINEAR_REGRESSION_QUALITY_METRIC_SET_BATCH_H__
#define __LINEAR_REGRESSION_QUALITY_METRIC_SET_BATCH_H__

#include "algorithms/algorithm.h"
#include "algorithms/algorithm_quality_metric_set_batch.h"
#include "algorithms/linear_regression/linear_regression_quality_metric_set_types.h"

namespace daal
{
namespace algorithms
{
namespace linear_regression
{
/**
 * \brief Contains classes to check the quality of the model trained with the linear regression algorithm
 */
namespace quality_metric_set
{
namespace interface1
{
/**
 * @defgroup linear_regression_quality_metric_set_batch Batch
 * @ingroup linear_regression_quality_metric_set
 * @{
 */
/**
 * <a name="DAAL-CLASS-ALGORITHMS__LINEAR_REGRESSION__QUALITY_METRIC_SET__BATCH"></a>
 * \brief Class that represents a quality metric set to check the model trained with linear regression algorithm
 *
 * \par Enumerations
 *      - \ref QualityMetricId  Identifiers of quality metrics provided by the library
 *
 * \par References
 *      - \ref algorithms::quality_metric_set::interface1::InputAlgorithmsCollection "algorithms::quality_metric_set::InputAlgorithmsCollection" class
 */
class DAAL_EXPORT Batch : public algorithms::quality_metric_set::Batch
{
public:
    Parameter parameter; /*!< Parameters of the algorithm */

    /**
     * Constructs a quality metric set for the model trained with the linear regression algorithm
     * \param[in] useDefaultMetrics     Flag. If true, a quality metric set is initialized with the quality metrics provided by the library
     * \param[in] nBeta                 Number of beta coefficients (p) of linear regression model used for prediction
     * \param[in] nBetaReducedModel     Number of beta coefficients (p0) used for prediction with reduced linear regression model where p - p0 of p beta coefficients are set to 0
     */
    Batch(size_t nBeta, size_t nBetaReducedModel, bool useDefaultMetrics = true)
        : algorithms::quality_metric_set::Batch(useDefaultMetrics), parameter(nBeta, nBetaReducedModel)
    {
        _inputData = InputDataCollectionPtr(new InputDataCollection());
        if (_useDefaultMetrics)
        {
            initializeQualityMetrics();
        }
        _resultCollection = ResultCollectionPtr(new ResultCollection());
    }

    virtual ~Batch() {}

    /**
     * Returns the structure that contains a computed quality metric set
     * \return Structure that contains a computed quality metric set
     */
    ResultCollectionPtr getResultCollection()
    {
        return services::staticPointerCast<ResultCollection, algorithms::quality_metric_set::ResultCollection>(_resultCollection);
    }

    /**
     * Returns the collection of input objects of the quality metrics algorithm
     * \return Collection of input objects of the quality metrics algorithm
     */
    InputDataCollectionPtr getInputDataCollection()
    {
        return services::staticPointerCast<InputDataCollection, algorithms::quality_metric_set::InputDataCollection>(_inputData);
    }

protected:
    virtual void initializeQualityMetrics();
};
/** @} */
} // namespace interface1
using interface1::Batch;

} // namespace quality_metric_set
} // namespace linear_regression
} // namespace algorithms
} // namespace daal
#endif
