/*
* 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.app.analyst;
import org.encog.ml.train.MLTrain;
import org.encog.util.Format;
import org.encog.util.Stopwatch;
/**
* A console implementation of the Encog Analyst listener. Will report all
* progress to the console.
*/
public class ConsoleAnalystListener implements AnalystListener {
/**
* The current task.
*/
private String currentTask = "";
/**
* Stopwatch to time process.
*/
private final Stopwatch stopwatch = new Stopwatch();
/**
* True if shutdown has been requested.
*/
private boolean shutdownRequested;
/**
* True if the current command should be canceled.
*/
private boolean cancelCommand;
/**
* {@inheritDoc}
*/
@Override
public void report(final int total, final int current,
final String message) {
if (total == 0) {
System.out.println(current + " : " + message);
} else {
System.out.println(current + "/" + total + " : " + message);
}
}
/**
* {@inheritDoc}
*/
@Override
public void reportCommandBegin(final int total, final int current,
final String name) {
System.out.println();
if (total == 0) {
System.out.println("Beginning Task#" + current + " : " + name);
} else {
System.out.println("Beginning Task#" + current + "/" + total
+ " : " + name);
}
this.currentTask = name;
this.stopwatch.start();
}
/**
* {@inheritDoc}
*/
@Override
public void reportCommandEnd(final boolean cancel) {
String cancelStr = "";
this.cancelCommand = false;
this.stopwatch.stop();
if (cancel) {
cancelStr = "canceled";
} else {
cancelStr = "completed";
}
System.out.println("Task "
+ this.currentTask
+ " "
+ cancelStr
+ ", task elapsed time "
+ Format.formatTimeSpan((int) (this.stopwatch
.getElapsedMilliseconds() / Format.MILI_IN_SEC)));
}
/**
* {@inheritDoc}
*/
@Override
public void reportTraining(final MLTrain train) {
System.out.println("Iteration #"
+ Format.formatInteger(train.getIteration())
+ " Error:"
+ Format.formatPercent(train.getError())
+ " elapsed time = "
+ Format.formatTimeSpan((int) (this.stopwatch
.getElapsedMilliseconds() / Format.MILI_IN_SEC)));
}
/**
* {@inheritDoc}
*/
@Override
public void reportTrainingBegin() {
}
/**
* {@inheritDoc}
*/
@Override
public void reportTrainingEnd() {
}
/**
* {@inheritDoc}
*/
@Override
public synchronized void requestCancelCommand() {
this.cancelCommand = true;
}
/**
* {@inheritDoc}
*/
@Override
public synchronized void requestShutdown() {
this.shutdownRequested = true;
}
/**
* {@inheritDoc}
*/
@Override
public synchronized boolean shouldShutDown() {
return this.shutdownRequested;
}
/**
* {@inheritDoc}
*/
@Override
public synchronized boolean shouldStopCommand() {
return this.cancelCommand;
}
}