org.nd4j.linalg.api.ops.random.impl.DropOut Maven / Gradle / Ivy
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* * terms of the Apache License, Version 2.0 which is available at
* * https://www.apache.org/licenses/LICENSE-2.0.
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* * SPDX-License-Identifier: Apache-2.0
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package org.nd4j.linalg.api.ops.random.impl;
import lombok.NoArgsConstructor;
import lombok.NonNull;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.OpContext;
import org.nd4j.linalg.api.ops.random.BaseRandomOp;
import org.nd4j.linalg.api.shape.LongShapeDescriptor;
import java.util.Arrays;
import java.util.List;
@NoArgsConstructor
public class DropOut extends BaseRandomOp {
private double p;
public DropOut(SameDiff sameDiff, SDVariable input, double p) {
super(sameDiff, input);
this.p = p;
this.extraArgs = new Object[] {p};
}
public DropOut(@NonNull INDArray x, double p) {
this(x, x, p);
}
public DropOut(@NonNull INDArray x, @NonNull INDArray z, double p) {
super(x,null,z);
this.p = p;
this.extraArgs = new Object[] {p};
}
@Override
public int opNum() {
return 1;
}
@Override
public String opName() {
return "dropout";
}
@Override
public Type opType() {
return Type.RANDOM ;
}
@Override
public List calculateOutputShape(OpContext oc) {
INDArray input = oc.getInputArray(0);
return Arrays.asList(input.shapeDescriptor());
}
@Override
public List doDiff(List f1) {
throw new UnsupportedOperationException("Not supported"); //We should only use *inverted* dropout with samediff
}
}