org.nd4j.linalg.api.ops.impl.transforms.strict.SELU 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.transforms.strict;
import java.util.Collections;
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.BaseTransformFloatOp;
import org.nd4j.linalg.api.ops.BaseTransformOp;
import org.nd4j.linalg.api.ops.BaseTransformStrictOp;
import java.util.Arrays;
import java.util.List;
/**
* SELU activation function
*
* https://arxiv.org/pdf/1706.02515.pdf
*
* @author [email protected]
*/
public class SELU extends BaseTransformStrictOp {
private static final double SELU_ALPHA = 1.6732632423543772848170429916717;
private static final double SELU_LAMBDA = 1.0507009873554804934193349852946;
public SELU(SameDiff sameDiff, SDVariable i_v, boolean inPlace) {
super(sameDiff, i_v, inPlace);
}
public SELU() {
}
public SELU(INDArray x, INDArray z) {
super(x, z);
}
public SELU(INDArray x) {
super(x);
}
@Override
public int opNum() {
return 42;
}
@Override
public String opName() {
return "selu";
}
@Override
public String onnxName() {
return "Selu";
}
@Override
public String tensorflowName() {
return "Selu";
}
@Override
public List doDiff(List i_v) {
return Collections.singletonList(f().seluBp(arg(), i_v.get(0)));
}
}