70 lines
2.4 KiB
Java
70 lines
2.4 KiB
Java
/*******************************************************************************
|
|
* 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.earlystopping.saver;
|
|
|
|
import org.deeplearning4j.earlystopping.EarlyStoppingModelSaver;
|
|
import org.deeplearning4j.nn.api.Model;
|
|
|
|
import java.io.IOException;
|
|
|
|
/** Save the best (and latest) models for early stopping training to memory for later retrieval
|
|
* <b>Note</b>: Assumes that network is cloneable via .clone() method
|
|
* @param <T> Type of model. For example, {@link org.deeplearning4j.nn.multilayer.MultiLayerNetwork} or {@link org.deeplearning4j.nn.graph.ComputationGraph}
|
|
*/
|
|
public class InMemoryModelSaver<T extends Model> implements EarlyStoppingModelSaver<T> {
|
|
|
|
private transient T bestModel;
|
|
private transient T latestModel;
|
|
|
|
@Override
|
|
@SuppressWarnings("unchecked")
|
|
public void saveBestModel(T net, double score) throws IOException {
|
|
try {
|
|
//Necessary because close is protected :S
|
|
bestModel = (T) (net.getClass().getDeclaredMethod("clone")).invoke(net);
|
|
} catch (Exception e) {
|
|
throw new RuntimeException(e);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
@SuppressWarnings("unchecked")
|
|
public void saveLatestModel(T net, double score) throws IOException {
|
|
try {
|
|
//Necessary because close is protected :S
|
|
latestModel = (T) (net.getClass().getDeclaredMethod("clone")).invoke(net);
|
|
} catch (Exception e) {
|
|
throw new RuntimeException(e);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public T getBestModel() throws IOException {
|
|
return bestModel;
|
|
}
|
|
|
|
@Override
|
|
public T getLatestModel() throws IOException {
|
|
return latestModel;
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
return "InMemoryModelSaver()";
|
|
}
|
|
}
|