org.nd4j.linalg.api.ops.impl.transforms.gradient.DynamicPartitionBp Maven / Gradle / Ivy
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* 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
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* under the License.
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* SPDX-License-Identifier: Apache-2.0
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package org.nd4j.linalg.api.ops.impl.transforms.gradient;
import lombok.val;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.imports.descriptors.properties.PropertyMapping;
import org.nd4j.imports.graphmapper.tf.TFGraphMapper;
import org.nd4j.linalg.api.ops.DynamicCustomOp;
import org.tensorflow.framework.AttrValue;
import org.tensorflow.framework.GraphDef;
import org.tensorflow.framework.NodeDef;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
/**
* Backprop operation for dynamic partition
* @author Alex Black
*/
public class DynamicPartitionBp extends DynamicCustomOp {
private int numPartitions;
public DynamicPartitionBp() {
}
public DynamicPartitionBp(SameDiff sameDiff, SDVariable input, SDVariable partitions, SDVariable[] gradsAtOutput, int numPartitions) {
super(null, sameDiff, argsArray(input, partitions, gradsAtOutput), false);
this.numPartitions = numPartitions;
addArgs();
}
@Override
public List doDiff(List i_v) {
throw new UnsupportedOperationException("Backprop not supported");
}
protected void addArgs() {
addIArgument(numPartitions);
}
@Override
public String opName() {
return "dynamic_partition_bp";
}
@Override
public int getNumOutputs(){
return 2; //input and partitions
}
private static SDVariable[] argsArray(SDVariable input, SDVariable partitions, SDVariable[] grads){
SDVariable[] out = new SDVariable[grads.length + 2];
out[0] = input;
out[1] = partitions;
System.arraycopy(grads, 0, out, 2, grads.length);
return out;
}
}