package edu.northwestern.at.morphadorner.corpuslinguistics.stringsimilarity;

/*  Please see the license information at the end of this file. */

import java.io.*;
import java.util.*;

/** Interface defining a method for computing string similarity.
 *
 *  <p>
 *  The similarity values computed by concrete implementations
 *  of this interface must take on values from 0.0 (no similarity)
 *  to 1.0 (perfect similarity).
 *  </p>
 */

public interface StringSimilarity
{
    /** Compute similarity between two strings.
     *
     *  @param  s1  First string.
     *  @param  s2  Second string.
     *
     *  @return     Similarity as a value from
     *              0.0 (no similarity) to 1.0
     *              (perfect similarity).
     */

    public double similarity( String s1 , String s2 );
}

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