home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (Gradient.java)

This example Java source code file (Gradient.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

character, gradient, indarray, map, serializable, util

The Gradient.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.gradient;

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

import java.io.Serializable;
import java.util.List;
import java.util.Map;

/**
 * Generic gradient
 *
 * @author Adam Gibson
 */
public interface Gradient extends Serializable {

    /**
     * Gradient look up table
     *
     * @return the gradient look up table
     */
    Map<String, INDArray> gradientForVariable();

    /**
     * The full gradient as one flat vector
     *
     * @return
     */
    INDArray gradient(List<String> order);

    /**
     * The full gradient as one flat vector
     *
     * @return
     */
    INDArray gradient();

    /**
     * Clear residual parameters (useful for returning a gradient and then clearing old objects)
     */
    void clear();

    /**
     * The gradient for the given variable
     *
     * @param variable the variable to get the gradient for
     * @return the gradient for the given variable or null
     */
    INDArray getGradientFor(String variable);

    /**
     * Update gradient for the given variable
     *
     * @param variable the variable to get the gradient for
     * @param gradient the gradient values
     * @return the gradient for the given variable or null
     */
    INDArray setGradientFor(String variable, INDArray gradient);

    /**
     * Update gradient for the given variable; also (optionally) specify the order in which the array should be flattened
     * to a row vector
     *
     * @param variable        the variable to get the gradient for
     * @param gradient        the gradient values
     * @param flatteningOrder the order in which gradients should be flattened (null ok - default)
     * @return the gradient for the given variable or null
     */
    INDArray setGradientFor(String variable, INDArray gradient, Character flatteningOrder);

    /**
     * Return the gradient flattening order for the specified variable, or null if it is not explicitly set
     * @param variable    Variable to return the gradient flattening order for
     * @return            Order in which the specified variable's gradient should be flattened
     */
    Character flatteningOrderForVariable(String variable);

}

Other Java examples (source code examples)

Here is a short list of links related to this Java Gradient.java source code file:



my book on functional programming

 

new blog posts

 

Copyright 1998-2019 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.