/*
* 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.neural.networks.training.pnn;
/**
* Calculate criteria.
*
*/
public interface CalculationCriteria {
/**
* Calculate the error with a single sigma.
* @param sigma The sigma.
* @return The error.
*/
double calcErrorWithSingleSigma(double sigma);
/**
* Calculate the error with multiple sigmas.
* @param x The data.
* @param direc The first derivative.
* @param deriv2 The 2nd derivatives.
* @param b Calculate the derivative.
* @return The error.
*/
double calcErrorWithMultipleSigma(double[] x, double[] direc,
double[] deriv2, boolean b);
}