subsetevaluator.java

来自「这是关于数据挖掘的一些算法」· Java 代码 · 共 53 行

/*
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 *    SubsetEvaluator.java
 *    Copyright (C) 1999 University of Waikato, Hamilton, New Zealand
 *
 */

package weka.attributeSelection;

import java.util.BitSet;

/** 
 * Abstract attribute subset evaluator.
 *
 * @author Mark Hall ([e-mail])
 * @version $Revision: 1.10 $
 */
public abstract class SubsetEvaluator extends ASEvaluation {

  /** for serialization */
  private static final long serialVersionUID = 917898857215312640L;
  
  // ===============
  // Public methods.
  // ===============
  
  /**
   * evaluates a subset of attributes
   *
   * @param subset a bitset representing the attribute subset to be 
   * evaluated 
   * @return the "merit" of the subset
   * @exception Exception if the subset could not be evaluated
   */
  public abstract double evaluateSubset(BitSet subset) throws Exception;
}