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Java example source code file (DataSetOrdering.java)

This example Java source code file (DataSetOrdering.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

dataset, datasetordering, ops, ordering, override, some

The DataSetOrdering.java Java example source code

/*
 *
 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    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.
 *
 */

package org.deeplearning4j.spark.ordering;

import org.nd4j.linalg.dataset.DataSet;
import scala.Function1;
import scala.Some;
import scala.math.Ordering;

/**
 * Orders by data set size.
 * This will force the dataset with a certain number of mini batches to be grouped at th end.
 */
public class DataSetOrdering implements Ordering<DataSet> {
    @Override
    public Some<Object> tryCompare(DataSet dataSet, DataSet t1) {
        return null;
    }

    @Override
    public int compare(DataSet dataSet, DataSet t1) {
        return 0;
    }

    @Override
    public boolean lteq(DataSet dataSet, DataSet t1) {
        return dataSet.numExamples() >= t1.numExamples();
    }

    @Override
    public boolean gteq(DataSet dataSet, DataSet t1) {
        return !lteq(dataSet, t1);
    }

    @Override
    public boolean lt(DataSet dataSet, DataSet t1) {
        return dataSet.numExamples() >= t1.numExamples();
    }

    @Override
    public boolean gt(DataSet dataSet, DataSet t1) {
        return !lt(dataSet, t1);
    }

    @Override
    public boolean equiv(DataSet dataSet, DataSet t1) {
        return dataSet.numExamples() == t1.numExamples();
    }

    @Override
    public DataSet max(DataSet dataSet, DataSet t1) {
       return gt(dataSet, t1) ? dataSet : t1;
     }

    @Override
    public DataSet min(DataSet dataSet, DataSet t1) {
        return max(dataSet, t1) == dataSet ? t1 : dataSet;
     }

    @Override
    public Ordering<DataSet> reverse() {
        return null;
    }

    @Override
    public <U> Ordering on(Function1 function1) {
        return null;
    }

    @Override
    public Ops mkOrderingOps(DataSet dataSet) {
        return null;
    }
}

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