org.deeplearning4j.nn.updater.LayerUpdater Maven / Gradle / Ivy
/*
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* * 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.
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* * See the NOTICE file distributed with this work for additional
* * information regarding copyright ownership.
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* * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* * SPDX-License-Identifier: Apache-2.0
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package org.deeplearning4j.nn.updater;
import lombok.extern.slf4j.Slf4j;
import org.deeplearning4j.nn.api.Layer;
import org.deeplearning4j.nn.api.Trainable;
import org.deeplearning4j.nn.multilayer.MultiLayerNetwork;
import org.nd4j.linalg.api.ndarray.INDArray;
import java.util.HashMap;
@Slf4j
public class LayerUpdater extends BaseMultiLayerUpdater {
public LayerUpdater(Layer layer) {
this(layer, null);
}
public LayerUpdater(Layer layer, INDArray updaterState) {
super(layer, updaterState);
if (layer instanceof MultiLayerNetwork) {
throw new UnsupportedOperationException("Cannot use LayerUpdater for a MultiLayerNetwork");
}
layersByName = new HashMap<>();
layersByName.put(layer.conf().getLayer().getLayerName(), layer);
}
@Override
protected Trainable[] getOrderedLayers() {
return new Trainable[] {(Trainable)network};
}
@Override
public INDArray getFlattenedGradientsView() {
return network.getGradientsViewArray();
}
@Override
protected INDArray getParams() {
return network.params();
}
@Override
protected boolean isMiniBatch() {
return network.conf().isMiniBatch();
}
@Override
protected boolean isSingleLayerUpdater() {
return true;
}
}