/*
* 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.util.normalize.segregate;
import java.util.ArrayList;
import java.util.Collection;
import org.encog.util.normalize.DataNormalization;
import org.encog.util.normalize.input.InputField;
/**
* Range segregators are used to segregate data and include or exclude if it is
* within a certain range.
*/
public class RangeSegregator implements Segregator {
/**
* The source field that this is based on.
*/
private InputField sourceField;
/**
* If none of the ranges match, should this data be included.
*/
private boolean include;
/**
* The ranges.
*/
private final Collection<SegregationRange> ranges =
new ArrayList<SegregationRange>();
/**
* The normalization object.
*/
private DataNormalization normalization;
/**
* Default constructor for reflection.
*/
public RangeSegregator() {
}
/**
* Construct a range segregator.
*
* @param sourceField
* The source field.
* @param include
* Default action, if the data is not in any of the ranges,
* should it be included.
*/
public RangeSegregator(final InputField sourceField,
final boolean include) {
this.sourceField = sourceField;
this.include = include;
}
/**
* Add a range.
*
* @param low
* The low end of the range.
* @param high
* The high end of the range.
* @param include
* Should this range be included.
*/
public void addRange(final double low, final double high,
final boolean include) {
final SegregationRange range = new SegregationRange(low, high, include);
addRange(range);
}
/**
* Add a range.
*
* @param range
* The range to add.
*/
public void addRange(final SegregationRange range) {
this.ranges.add(range);
}
/**
* @return The normalization object used by this object.
*/
public DataNormalization getNormalization() {
return this.normalization;
}
/**
* @return The source field that the ranges are compared against.
*/
public InputField getSourceField() {
return this.sourceField;
}
/**
* Init the object.
* @param normalization The normalization object that owns this range.
*/
public void init(final DataNormalization normalization) {
this.normalization = normalization;
}
/**
* @return True if the current row should be included according to this
* segregator.
*/
public boolean shouldInclude() {
final double value = this.sourceField.getCurrentValue();
for (final SegregationRange range : this.ranges) {
if (range.inRange(value)) {
return range.isIncluded();
}
}
return this.include;
}
/**
* Nothing needs to be done to setup for a pass.
*/
public void passInit() {
}
}