/*
* 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.train.strategy.end;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import org.encog.ml.train.MLTrain;
public class EndMinutesStrategy implements EndTrainingStrategy {
private final int minutes;
private long startedTime;
private boolean started;
private final AtomicInteger minutesLeft = new AtomicInteger(0);
public EndMinutesStrategy(int minutes)
{
this.minutes = minutes;
started = false;
this.minutesLeft.set(minutes);
}
/**
* {@inheritDoc}
*/
@Override
public boolean shouldStop() {
final boolean timeUp = getMinutesLeft() <= 0;
if (timeUp) {
//LOG.info("Max training minutes exceed.");
}
return started && timeUp;
}
/**
* {@inheritDoc}
*/
@Override
public void init(MLTrain train) {
this.started = true;
this.startedTime = System.currentTimeMillis();
}
/**
* {@inheritDoc}
*/
@Override
public void postIteration() {
final long now = System.currentTimeMillis();
final long minutesPassed = (now - this.startedTime) / TimeUnit.MINUTES.toMillis(1);
this.minutesLeft.set((int) Math.ceil(getMinutes() - minutesPassed));
//LOG.info("Number of minutes remaining to termination by time: " + this.minutesLeft.get());
}
/**
* {@inheritDoc}
*/
@Override
public void preIteration() {
}
/**
* @return the minutesLeft
*/
public int getMinutesLeft() {
return minutesLeft.get();
}
/**
* @return the minutes
*/
public int getMinutes() {
return minutes;
}
}