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Java example source code file (UnitVarianceProcessor.java)

This example Java source code file (UnitVarianceProcessor.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

baseinputpreprocessor, data, equalsandhashcode, indarray, override, unitvarianceprocessor

The UnitVarianceProcessor.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.nn.conf.preprocessor;

import lombok.*;

import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.factory.Nd4j;

 * Unit variance operation
 * @author Adma Gibson
@Data @EqualsAndHashCode(callSuper=false)
public class UnitVarianceProcessor extends BaseInputPreProcessor {

	INDArray columnStds;

    public INDArray preProcess(INDArray input, int miniBatchSize) {
        columnStds = input.std(0);
        return input;

    public INDArray backprop(INDArray output, int miniBatchSize) {
        return output;	//no-op

    public UnitVarianceProcessor clone() {
        UnitVarianceProcessor clone = (UnitVarianceProcessor) super.clone();
        if(clone.columnStds != null) clone.columnStds = clone.columnStds.dup();
        return clone;

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