/**
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package org.cspoker.ai.opponentmodels.weka.instances;
import java.io.StringReader;
import org.apache.log4j.Logger;
import org.cspoker.ai.opponentmodels.weka.Propositionalizer;
import weka.core.Instance;
import weka.core.Instances;
public abstract class InstancesBuilder {
private static final Logger logger = Logger.getLogger(InstancesBuilder.class);
public final static String nl = "\n";
public final int length;
protected final Instances dataset;
public InstancesBuilder(String name, String attributes, String targets) {
String header =
"@relation "+name+nl+
attributes+
targets+
"@data"+nl;
this.length = attributes.split(nl).length+targets.split(nl).length;
try {
this.dataset = new Instances(new StringReader(header));
} catch (Exception e) {
logger.error(e);
e.printStackTrace();
throw new IllegalStateException(e);
}
dataset.setClassIndex((length>0?length-1:0));
}
public abstract Instance getUnclassifiedInstance(Propositionalizer prop, Object actorId);
public void addClassifiedInstance(Propositionalizer prop, Object actorId, Object[] targets){
Instance instance = getClassifiedInstance(prop, actorId, targets);
dataset.add(instance);
}
public Instance getClassifiedInstance(Propositionalizer prop,
Object actorId, Object[] targets) {
Instance instance = getUnclassifiedInstance(prop, actorId);
for(int i=0; i<targets.length;i++){
//dirty, blame weka
if(targets[i] instanceof Number){
instance.setValue(length-targets.length+i, ((Number)targets[i]).doubleValue());
}else{
instance.setValue(length-targets.length+i, (String)targets[i]);
}
}
return instance;
}
@Override
public String toString() {
return dataset.toString();
}
}