org.deeplearning4j.models.sequencevectors.listeners.SimilarityListener Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
package org.deeplearning4j.models.sequencevectors.listeners;
import org.deeplearning4j.models.sequencevectors.SequenceVectors;
import org.deeplearning4j.models.sequencevectors.enums.ListenerEvent;
import org.deeplearning4j.models.sequencevectors.interfaces.VectorsListener;
import org.deeplearning4j.models.sequencevectors.sequence.SequenceElement;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.atomic.AtomicLong;
/**
* Simple listener, to monitor similarity between selected elements during training
*
* @author [email protected]
*/
public class SimilarityListener implements VectorsListener {
protected static final Logger logger = LoggerFactory.getLogger(SimilarityListener.class);
private final ListenerEvent targetEvent;
private final int frequency;
private final String element1;
private final String element2;
private final AtomicLong counter = new AtomicLong(0);
public SimilarityListener(ListenerEvent targetEvent, int frequency, String label1, String label2) {
this.targetEvent = targetEvent;
this.frequency = frequency;
this.element1 = label1;
this.element2 = label2;
}
@Override
public boolean validateEvent(ListenerEvent event, long argument) {
return event == targetEvent;
}
@Override
public void processEvent(ListenerEvent event, SequenceVectors sequenceVectors, long argument) {
if (event != targetEvent)
return;
long cnt = counter.getAndIncrement();
if (cnt % frequency != 0)
return;
double similarity = sequenceVectors.similarity(element1, element2);
logger.info("Invocation: {}, similarity: {}", cnt, similarity);
}
}