/*
* 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;
import java.io.Serializable;
import org.encog.Encog;
import org.encog.util.csv.CSVFormat;
/**
* A choice in a Bayesian network. Choices can be either discrete or continuous.
* For continuous choices the number must be made discrete by mapping it to
* discrete ranges.
*
*/
public class BayesianChoice implements Serializable, Comparable<BayesianChoice> {
/**
* The label for this choice.
*/
final private String label;
/**
* The min values, if continuous, or the index if discrete.
*/
final double min;
/**
* The max values, if continuous, or the index if discrete.
*/
final double max;
/**
* Construct a continuous choice that covers the specified range.
*
* @param label
* The label for this choice.
* @param min
* The minimum value for this range.
* @param max
* The maximum value for this range.
*/
public BayesianChoice(String label, double min, double max) {
super();
this.label = label;
this.min = min;
this.max = max;
}
/**
* Construct a discrete choice for the specified index.
*
* @param label
* The label for this choice.
* @param index
* The index for this choice.
*/
public BayesianChoice(String label, int index) {
super();
this.label = label;
this.min = index;
this.max = index;
}
/**
* @return Get the label.
*/
public String getLabel() {
return label;
}
/**
* @return Get the min.
*/
public double getMin() {
return min;
}
/**
* @return Get the max.
*/
public double getMax() {
return max;
}
/**
* @return True, if this choice has an index, as opposed to min/max. If the
* value has an idex, then it is discrete.
*/
public boolean isIndex() {
return Math.abs(this.min - this.max) < Encog.DEFAULT_DOUBLE_EQUAL;
}
/**
* {@inheritDoc}
*/
public String toString() {
return this.label;
}
/**
* @return A string representation of this choice.
*/
public String toFullString() {
StringBuilder result = new StringBuilder();
result.append(this.label);
if (!isIndex()) {
result.append(":");
result.append(CSVFormat.EG_FORMAT.format(this.min, 4));
result.append(" to ");
result.append(CSVFormat.EG_FORMAT.format(this.max, 4));
}
return result.toString();
}
/**
* {@inheritDoc}
*/
@Override
public int compareTo(BayesianChoice other) {
if( this.max<other.max ) {
return -1;
} else {
return 1;
}
}
}