/*
* Encog(tm) Core v3.4 - Java Version
* http://www.heatonresearch.com/encog/
* https://github.com/encog/encog-java-core
* Copyright 2008-2016 Heaton Research, Inc.
*
* 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.
*
* For more information on Heaton Research copyrights, licenses
* and trademarks visit:
* http://www.heatonresearch.com/copyright
*/
package org.encog.ml.bayesian.parse;
import java.util.ArrayList;
import java.util.List;
import org.encog.ml.bayesian.BayesianChoice;
import org.encog.ml.bayesian.BayesianError;
import org.encog.ml.bayesian.BayesianEvent;
/**
* A parsed event.
*/
public class ParsedEvent {
/**
* The event label.
*/
private final String label;
/**
* The event value.
*/
private String value;
/**
* The choices.
*/
private final List<ParsedChoice> list = new ArrayList<ParsedChoice>();
/**
* Construct a parsed even with the specified label.
* @param theLabel The label for this event.
*/
public ParsedEvent(String theLabel) {
this.label = theLabel;
}
/**
* @return The value for this event, or null if undefined.
*/
public String getValue() {
return value;
}
/**
* Set the value for this event.
* @param value The value for this event.
*/
public void setValue(String value) {
this.value = value;
}
/**
* @return The label for this event.
*/
public String getLabel() {
return label;
}
/**
* Resolve the event to an actual value.
* @param actualEvent The actual event.
* @return The value.
*/
public int resolveValue(BayesianEvent actualEvent) {
int result = 0;
if( this.value==null ) {
throw new BayesianError("Value is undefined for " + this.label + " should express a value with +, - or =.");
}
for(BayesianChoice choice: actualEvent.getChoices()) {
if( this.value.equals(choice.getLabel())) {
return result;
}
result++;
}
// resolve true/false if not found, probably came from +/- notation
if( this.value.equalsIgnoreCase("true")) {
return 0;
} else if( this.value.equalsIgnoreCase("false")) {
return 1;
}
// try to resolve numeric index
try {
int i = Integer.parseInt(this.value);
if( i<actualEvent.getChoices().size() ) {
return i;
}
} catch(NumberFormatException ex) {
// well, we tried
}
// error out if nothing found
throw new BayesianError("Can'f find choice " + this.value + " in the event " + this.label );
}
/**
* @return A list of choices.
*/
public List<ParsedChoice> getList() {
return list;
}
/**
* {@inheritDoc}
*/
public String toString() {
StringBuilder result = new StringBuilder();
result.append("[ParsedEvent:label=");
result.append(this.label);
result.append(",value=");
result.append(this.value);
result.append("]");
return result.toString();
}
}