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/*
 * File:            IdentityDistanceMetric.java
 * Authors:         Justin Basilico
 * Project:         Cognitive Foundry
 * 
 * Copyright 2011 Cognitive Foundry. All rights reserved.
 */

package gov.sandia.cognition.learning.function.distance;

import gov.sandia.cognition.math.Metric;
import gov.sandia.cognition.util.AbstractCloneableSerializable;
import gov.sandia.cognition.util.ObjectUtil;

/**
 * A distance metric that is 0 if two objects are equal and 1 if they are not.
 * Can be used with any object with a valid equals method.
 *
 * @author  Justin Basilico
 * @since   3.3.3
 */
public class IdentityDistanceMetric
    extends AbstractCloneableSerializable
    implements Metric