org.nd4j.linalg.api.ops.impl.loss.bp.SoftmaxCrossEntropyWithLogitsLossBp 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.nd4j.linalg.api.ops.impl.loss.bp;
import lombok.NoArgsConstructor;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.linalg.api.ops.DynamicCustomOp;
import java.util.List;
/**
* Softmax cross entropy loss with Logits
*
* @author Max Pumperla
*/
@NoArgsConstructor
public class SoftmaxCrossEntropyWithLogitsLossBp extends DynamicCustomOp {
protected int classesDim;
public SoftmaxCrossEntropyWithLogitsLossBp(SameDiff sameDiff, SDVariable logits, SDVariable weights, SDVariable labels, int classesDim) {
super(null, sameDiff, new SDVariable[]{logits, weights, labels}, false);
this.classesDim = classesDim;
addIArgument(classesDim);
}
@Override
public String opName() {
return "softmax_cross_entropy_loss_with_logits_grad";
}
@Override
public List doDiff(List grad){
throw new UnsupportedOperationException("Differentiation of " + getClass().getName() + " not supported");
}
}