event.java

最大熵分类器

///////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2001 Jason Baldridge and Gann Bierner
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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 Lesser General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//////////////////////////////////////////////////////////////////////////////   
package opennlp.maxent;


/**
 * The context of a decision point during training.  This includes
 * contextual predicates and an outcome.
 *
 * @author      Jason Baldridge
 * @version     $Revision: 1.5 $, $Date: 2007/03/21 19:02:43 $
 */
public class Event extends gnu.trove.TLinkableAdaptor {
    private String outcome;
    private String[] context;
    private float[] values;
    
    public Event(String outcome, String[] context) {
      this(outcome,context,null);
    }
    
    public Event(String outcome, String[] context, float[] values) {
      this.outcome = outcome;
      this.context = context;
      this.values = values;
    }
    
    public String getOutcome() { 
      return outcome; 
    }
    
    public String[] getContext() { 
      return context; 
    }
    
    public float[] getValues() {
      return values;
    }
    
    public String toString() {
      StringBuffer sb = new StringBuffer();
      sb.append(outcome).append(" [");
      if (context.length > 0) {
        sb.append(context[0]);
        if (values != null) {
          sb.append("="+values[0]);
        }
      }
      for (int ci=1;ci<context.length;ci++) {
        sb.append(" ").append(context[ci]);
        if (values != null) {
          sb.append("="+values[ci]);
        }
      }
      sb.append("]");
      return sb.toString();
    }
    
}