/*
* 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.data.versatile.normalizers;
import org.encog.EncogError;
import org.encog.ml.data.MLData;
import org.encog.ml.data.versatile.columns.ColumnDefinition;
/**
* A normalizer that simply passes the value through unnormalized.
*/
public class PassThroughNormalizer implements Normalizer {
private static final long serialVersionUID = 1L;
@Override
public boolean equals(Object obj) {
return ( obj instanceof PassThroughNormalizer );
}
/**
* {@inheritDoc}
*/
@Override
public int outputSize(ColumnDefinition colDef) {
return 1;
}
/**
* {@inheritDoc}
*/
@Override
public int normalizeColumn(ColumnDefinition colDef, String value,
double[] outputData, int outputColumn) {
throw new EncogError("Can't use a pass-through normalizer on a string value: "+value);
}
/**
* {@inheritDoc}
*/
@Override
public String denormalizeColumn(ColumnDefinition colDef, MLData data,
int dataColumn) {
return ""+data.getData(dataColumn);
}
@Override
public int normalizeColumn(ColumnDefinition colDef, double value,
double[] outputData, int outputColumn) {
outputData[outputColumn]=value;
return outputColumn+1;
}
}