/* Copyright (C) 2003 Univ. of Massachusetts Amherst, Computer Science Dept.
This file is part of "MALLET" (MAchine Learning for LanguagE Toolkit).
http://www.cs.umass.edu/~mccallum/mallet
This software is provided under the terms of the Common Public License,
version 1.0, as published by http://www.opensource.org. For further
information, see the file `LICENSE' included with this distribution. */
/** Interface for a measure of distance between two <CODE>ConstantVector</CODE>s
@author Jerod Weinman <A HREF="mailto:weinman@cs.umass.edu">weinman@cs.umass.edu</A>
*/
package cc.mallet.types;
import cc.mallet.types.SparseVector;
/**
Stores a hash for each object being compared for efficient
computation.
*/
public interface CachedMetric extends Metric {
public double distance( SparseVector a, int hashCodeA,
SparseVector b, int hashCodeB);
}