nd4j/nd4j-backends/nd4j-api-parent/nd4j-api/src/main/java/org/nd4j/linalg/api/ops/impl/transforms/custom/XwPlusBBp.java
/*
* ******************************************************************************
* *
* *
* * 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.transforms.custom;
import lombok.NoArgsConstructor;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.common.base.Preconditions;
import org.nd4j.imports.NoOpNameFoundException;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.DynamicCustomOp;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
@NoArgsConstructor
public class XwPlusBBp extends DynamicCustomOp {
private boolean aTranpose,bTranspose;
public XwPlusBBp(SameDiff sameDiff, SDVariable input, SDVariable weights, SDVariable bias,SDVariable dldX, boolean transposeA, boolean transposeB) {
super(null, sameDiff, new SDVariable[] {input, weights, bias,dldX}, false);
addIArgument(transposeA ? 1 : 0, transposeB ? 1 : 0);
this.aTranpose = transposeA;
this.bTranspose = transposeB;
}
public XwPlusBBp(INDArray input, INDArray weights, INDArray bias) {
super(new INDArray[] {input, weights, bias}, null);
}
public XwPlusBBp(INDArray[] inputs, INDArray output){
super(inputs, wrapOrNull(output));
}
@Override
public String opName() {
return "xw_plus_b_bp";
}
@Override
public String tensorflowName() {
throw new NoOpNameFoundException("No tensorflow name found for shape " + opName());
}
@Override
public String onnxName() {
throw new NoOpNameFoundException("No onnx name found for shape " + opName());
}
@Override
public List<SDVariable> doDiff(List<SDVariable> gradient) {
throw new UnsupportedOperationException("Unable to take gradient of a back prop op");
}
@Override
public List<DataType> calculateOutputDataTypes(List<DataType> dataTypes) {
DataType first = dataTypes.get(0);
for( int i = 0; i < 4; i++) {
Preconditions.checkState(dataTypes.get(i).isFPType(), "Input %s datatype must be a floating point type, got datypes %s", dataTypes);
if(i > 0){
Preconditions.checkState(first == dataTypes.get(i), "All datatypes must be same type, got input datatypes %s", dataTypes);
}
}
return dataTypes.subList(0,3);
}
}