org.nd4j.linalg.api.ops.impl.shape.Permute Maven / Gradle / Ivy
/*
* ******************************************************************************
* *
* *
* * 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.
* *
* * See the NOTICE file distributed with this work for additional
* * information regarding copyright ownership.
* * 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.shape;
import org.apache.commons.lang3.ArrayUtils;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.imports.NoOpNameFoundException;
import org.nd4j.linalg.api.ndarray.INDArray;
import java.util.Collections;
import java.util.List;
public class Permute extends Transpose {
private int[] reverseDims;
public Permute(SameDiff sameDiff, SDVariable i_v, int... permuteDims) {
super(sameDiff, i_v);
this.permuteDims = permuteDims;
this.reverseDims = new int[permuteDims.length];
for (int i = 0; i < reverseDims.length; i++) {
reverseDims[i] = ArrayUtils.indexOf(permuteDims, i);
}
addIArgument(permuteDims);
}
public Permute(INDArray input, INDArray result, int... permuteDims){
super(input, result);
this.permuteDims = permuteDims;
this.reverseDims = new int[permuteDims.length];
for (int i = 0; i < reverseDims.length; i++) {
reverseDims[i] = ArrayUtils.indexOf(permuteDims, i);
}
addIArgument(permuteDims);
}
public Permute(SameDiff sd, SDVariable input, SDVariable permuteDims){
super(sd, input, permuteDims);
}
public Permute(INDArray input, int... permuteDims){
super(input, null);
this.permuteDims = permuteDims;
addIArgument(permuteDims);
}
public Permute() {
}
@Override
public String opName() {
return "permute";
}
@Override
public List doDiff(List i_v) {
SDVariable ret;
if(args().length == 1) {
//Static dimensions
ret = sameDiff.permute(i_v.get(0), reverseDims);
} else {
//Dynamic dimensions
ret = sameDiff.permute(i_v.get(0), sameDiff.invertPermutation(arg(1)));
}
return Collections.singletonList(ret);
}
@Override
public String tensorflowName() {
throw new NoOpNameFoundException("No tensorflow op opName found for " + opName());
}
@Override
public String onnxName() {
throw new NoOpNameFoundException("No onnx op opName found for " + opName());
}
}