nd4j/nd4j-backends/nd4j-api-parent/nd4j-api/src/main/java/org/nd4j/linalg/api/ops/impl/transforms/custom/Fill.java
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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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* * information regarding copyright ownership.
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* * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* * SPDX-License-Identifier: Apache-2.0
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package org.nd4j.linalg.api.ops.impl.transforms.custom;
import lombok.val;
import onnx.Onnx;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.common.base.Preconditions;
import org.nd4j.imports.descriptors.properties.adapters.DataTypeAdapter;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.DynamicCustomOp;
import org.nd4j.linalg.api.ops.Op;
import org.nd4j.linalg.exception.ND4JIllegalStateException;
import org.nd4j.linalg.factory.Nd4j;
import org.tensorflow.framework.AttrValue;
import org.tensorflow.framework.GraphDef;
import org.tensorflow.framework.NodeDef;
import java.util.Collections;
import java.util.List;
import java.util.Map;
/**
* Fill an array of given "shape" with the provided "value", e.g.
* shape [2, 2] and value 42 returns [[42, 42], [42, 42]].
*
* @author Max Pumperla
*/
public class Fill extends DynamicCustomOp {
private double value;
private DataType dtype;
public Fill() {
}
public Fill(SameDiff sameDiff, SDVariable shape, DataType dtype, double value) {
super(null,sameDiff, new SDVariable[] {shape}, false);
this.value = value;
this.dtype = dtype;
addArgs();
}
public Fill(INDArray shape, DataType dtype, double value) {
super(new INDArray[]{shape, Nd4j.scalar(dtype, value)}, null);
this.value = value;
this.dtype = dtype;
}
public Fill(INDArray shape, INDArray result, double value) {
super(null, shape, result, Collections.singletonList(value), null);
this.value = value;
}
public Fill(INDArray shape, INDArray value, INDArray result) {
super(null, new INDArray[]{shape, value}, new INDArray[]{result});
}
protected void addArgs() {
addTArgument(value);
}
@Override
public void initFromTensorFlow(NodeDef nodeDef, SameDiff initWith, Map<String, AttrValue> attributesForNode, GraphDef graph) {
org.tensorflow.framework.DataType dt = attributesForNode.get("T").getType();
this.dtype = DataTypeAdapter.dtypeConv(dt);
}
@Override
public void initFromOnnx(Onnx.NodeProto node, SameDiff initWith, Map<String, Onnx.AttributeProto> attributesForNode, Onnx.GraphProto graph) {
super.initFromOnnx(node, initWith, attributesForNode, graph);
}
@Override
public void assertValidForExecution() {
val descriptor = getDescriptor();
if(descriptor.getNumInputs() > 0 && numInputArguments() > 2 || numInputArguments() < 1)
throw new ND4JIllegalStateException("Op failure for " + opName() + " Number of inputs is invalid for execution. Specified " + numInputArguments() + " but should be " + descriptor.getNumInputs());
if(descriptor.getNumOutputs() > 0 && numOutputArguments() != descriptor.getNumOutputs())
throw new ND4JIllegalStateException("Op failure for " + opName() + " Number of outputs is invalid for execution. Specified " + numOutputArguments() + " but should be " + descriptor.getNumInputs());
//< 0 means dynamic size
if(descriptor.getNumIArgs() >= 0 && numIArguments() != descriptor.getNumIArgs())
throw new ND4JIllegalStateException("Op failure for " + opName() + " Number of integer arguments is invalid for execution. Specified " + numIArguments() + " but should be " + descriptor.getNumIArgs());
if(descriptor.getNumTArgs() >= 0 && numTArguments() < 1)
throw new ND4JIllegalStateException("Op failure for " + opName() + " Number of inputs is invalid for execution. Specified " + numTArguments() + " but should be " + descriptor.getNumTArgs());
}
@Override
public String opName() {
return "fill";
}
@Override
public String onnxName() {
return "ConstantFill";
}
@Override
public String tensorflowName() {
return "Fill";
}
@Override
public Op.Type opType() {
return Op.Type.CUSTOM;
}
@Override
public List<SDVariable> doDiff(List<SDVariable> gradients){
return Collections.singletonList(sameDiff.zerosLike(arg()));
}
@Override
public List<DataType> calculateOutputDataTypes(List<DataType> dataTypes) {
if(!dArguments.isEmpty()) {
return Collections.singletonList(dArguments.get(0));
}
//1 or 2 possible: 2 for TF import (fill with specified value
Preconditions.checkState(dataTypes != null && (dataTypes.size() == 1 || dataTypes.size() == 2),
"Expected 1 or 2 input datatypes for %s, got %s", getClass(), dataTypes);
Preconditions.checkNotNull(dtype, "Output datatype was null (not set)");
return Collections.singletonList(dtype);
}
}