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package org.deeplearning4j.spark.impl.paramavg;

import lombok.Data;
import org.deeplearning4j.nn.api.Updater;
import org.deeplearning4j.nn.updater.graph.ComputationGraphUpdater;
import org.deeplearning4j.spark.api.TrainingResult;
import org.deeplearning4j.spark.api.stats.SparkTrainingStats;
import org.nd4j.linalg.api.ndarray.INDArray;

/**
 * The results (parameters, optional updaters) returned by a {@link ParameterAveragingTrainingWorker} to the
 * {@link ParameterAveragingTrainingMaster}
 *
 * @author Alex Black
 */
@Data
public class ParameterAveragingTrainingResult implements TrainingResult {

    private final INDArray parameters;
    private final Updater updater;
    private final ComputationGraphUpdater graphUpdater;
    private final double score;
    private SparkTrainingStats sparkTrainingStats;

    public ParameterAveragingTrainingResult(INDArray parameters, Updater updater, double score) {
        this(parameters, updater, score, null);
    }

    public ParameterAveragingTrainingResult(INDArray parameters, ComputationGraphUpdater updater, double score) {
        this(parameters, null, updater, score, null);
    }

    public ParameterAveragingTrainingResult(INDArray parameters, Updater updater, double score, SparkTrainingStats sparkTrainingStats) {
        this(parameters, updater, null, score, sparkTrainingStats);
    }

    public ParameterAveragingTrainingResult(INDArray parameters, ComputationGraphUpdater updater, double score, SparkTrainingStats sparkTrainingStats) {
        this(parameters, null, updater, score, sparkTrainingStats);
    }

    public ParameterAveragingTrainingResult(INDArray parameters, Updater updater, ComputationGraphUpdater graphUpdater, double score,
                                            SparkTrainingStats sparkTrainingStats) {
        this.parameters = parameters;
        this.updater = updater;
        this.graphUpdater = graphUpdater;
        this.score = score;
        this.sparkTrainingStats = sparkTrainingStats;
    }

    @Override
    public void setStats(SparkTrainingStats sparkTrainingStats) {
        this.sparkTrainingStats = sparkTrainingStats;
    }
}