IDistanceStrategy.java

/*
 * Sifarish: Recommendation Engine
 * Author: Pranab Ghosh
 * 
 * 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.sifarish.util;

import java.io.Serializable;

/**
 * @author pranab
 *
 */
public interface IDistanceStrategy  extends Serializable {
	
	/**
	 * 
	 */
	public void initialize();
	
	/**
	 * @param distance
	 * @param weight
	 */
	public  void accumulate(double distance, double weight);
	
	/**
	 * @return
	 */
	public  int getSimilarity();

	/**
	 * @param isScaled
	 * @return
	 */
	public double getSimilarity(boolean isScaled);
}