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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.commons.math3.optim;
/**
* Base class for all convergence checker implementations.
*
* @param <PAIR> Type of (point, value) pair.
* @since 3.0
*/
public abstract class AbstractConvergenceChecker<PAIR> implements ConvergenceChecker<PAIR> {
/** Relative tolerance threshold. */
private final double relativeThreshold;
/** Absolute tolerance threshold. */
private final double absoluteThreshold;
/**
* Build an instance with a specified thresholds.
*
* @param relativeThreshold relative tolerance threshold
* @param absoluteThreshold absolute tolerance threshold
*/
public AbstractConvergenceChecker(
final double relativeThreshold, final double absoluteThreshold) {
this.relativeThreshold = relativeThreshold;
this.absoluteThreshold = absoluteThreshold;
}
/**
* @return the relative threshold.
*/
public double getRelativeThreshold() {
return relativeThreshold;
}
/**
* @return the absolute threshold.
*/
public double getAbsoluteThreshold() {
return absoluteThreshold;
}
/** {@inheritDoc} */
public abstract boolean converged(int iteration, PAIR previous, PAIR current);
}
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