org.nd4j.linalg.api.ops.impl.reduce.bp.CumProdBp 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.reduce.bp;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.linalg.api.ndarray.INDArray;
/**
* Backprop op for cumulative product operation
*
* @author Alex Black
*/
public class CumProdBp extends BaseReductionBp {
private boolean exclusive;
private boolean reverse;
public CumProdBp(SameDiff sameDiff, SDVariable origInput, SDVariable gradAtOutput, boolean exclusive, boolean reverse, int... axis) {
super(sameDiff, origInput, gradAtOutput, false, axis);
this.exclusive = exclusive;
this.reverse = reverse;
iArguments.clear();
tArguments.clear();
addArgs();
}
public CumProdBp(INDArray origInput, INDArray gradAtOutput, INDArray output, boolean exclusive, boolean reverse, int... axis){
super(origInput, gradAtOutput, output, false, axis);
this.exclusive = exclusive;
this.reverse = reverse;
iArguments.clear();
tArguments.clear();
addArgs();
}
public CumProdBp(){}
@Override
public int getNumOutputs() {
if (args().length == 2)
return 1;
else
return 2;
}
@Override
protected void addArgs(){
addIArgument(exclusive ? 1 : 0);
addIArgument(reverse ? 1 : 0);
if(dimensions != null && dimensions.length > 0){
addIArgument(dimensions);
}
}
@Override
public String opName() {
return "cumprod_bp";
}
}