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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
* 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.same;
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.BaseReduceSameOp;
import java.util.Collections;
import java.util.List;
/**
* Calculate the max over an array
*
* @author Adam Gibson
*/
public class Max extends BaseReduceSameOp {
public Max(SameDiff sameDiff, SDVariable i_v, boolean keepDims, int[] dimensions) {
super(sameDiff, i_v, dimensions, keepDims);
}
public Max(SameDiff sameDiff, SDVariable i_v, SDVariable i_v2, int[] dimensions) {
super(sameDiff, i_v, i_v2, dimensions);
}
public Max() {
}
/**
* Initialize with the given
* input, pairwise transform, result, and number
* of elements
*
* @param x the input
* @param y the pairwise transform
* @param z the result
* @param n the number of elements
*/
public Max(INDArray x, int... axis) {
super(x, null, null, axis);
}
public Max(INDArray x, boolean keepDims, int... axis) {
super(x, keepDims, axis);
}
public Max(INDArray x, INDArray z, int... axis) {
super(x, null, z, axis);
}
public Max(INDArray x, INDArray z, boolean keepDims, int... dimensions) {
super(x, z, keepDims, dimensions);
}
@Override
public int opNum() {
return 1;
}
@Override
public String opName() {
return "reduce_max";
}
@Override
public List doDiff(List grad) {
return Collections.singletonList(f().maxBp(arg(), grad.get(0), keepDims, dimensions));
}
@Override
public String onnxName() {
return "ReduceMax";
}
@Override
public String tensorflowName() {
return "Max";
}
}