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org.nd4j.linalg.api.ops.impl.layers.convolution.Conv1DDerivative Maven / Gradle / Ivy
/* ******************************************************************************
* Copyright (c) 2019 Konduit K.K.
*
* 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.layers.convolution;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.base.Preconditions;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.DynamicCustomOp;
import org.nd4j.linalg.api.ops.impl.layers.convolution.config.Conv1DConfig;
import org.nd4j.linalg.api.ops.impl.layers.convolution.config.PaddingMode;
import org.nd4j.linalg.util.ArrayUtil;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
/**
* Conv1D Backprop operation
*
* @author Alex Black
*/
@Slf4j
@Getter
@NoArgsConstructor
public class Conv1DDerivative extends DynamicCustomOp {
protected Conv1DConfig config;
private static final String INVALID_CONFIGURATION = "Invalid Conv1D configuration : s = %s p = %s ";
public Conv1DDerivative(@NonNull SameDiff sameDiff,
@NonNull SDVariable[] inputs,
@NonNull Conv1DConfig config) {
super(sameDiff, inputs);
initConfig(config);
}
public Conv1DDerivative(@NonNull SameDiff sd, @NonNull SDVariable input, @NonNull SDVariable weights, SDVariable bias, SDVariable gradOut, @NonNull Conv1DConfig config){
this(sd, wrapFilterNull(input, weights, bias, gradOut), config);
}
public Conv1DDerivative(INDArray[] inputs, INDArray[] outputs, Conv1DConfig config){
super(inputs, outputs);
initConfig(config);
}
public Conv1DDerivative(@NonNull INDArray input, @NonNull INDArray weights, INDArray bias, @NonNull INDArray gradOut, INDArray output, @NonNull Conv1DConfig config){
this(wrapFilterNull(input, weights, bias, gradOut), wrapOrNull(output), config);
}
private void initConfig(Conv1DConfig config){
this.config = config;
Preconditions.checkState(config.getS() >= 1 && config.getP() >= 0, INVALID_CONFIGURATION, config.getS(), config.getP());
addArgs();
}
protected void addArgs() {
if (config == null)
config = Conv1DConfig.builder().build();
addIArgument(config.getK(),
config.getS(),
config.getP(),
config.getD(),
config.getPaddingMode().ordinal(),
ArrayUtil.fromBoolean(config.isNWC()));
}
@Override
public long[] iArgs() {
if (iArguments.size() == 0)
addArgs();
return super.iArgs();
}
@Override
public Object getValue(Field property) {
if (config == null && !iArguments.isEmpty()) {
config = Conv1DConfig.builder()
.k(iArguments.get(0))
.s(iArguments.get(1))
.p(iArguments.get(2))
.d(iArguments.get(3))
.paddingMode(PaddingMode.values()[iArguments.get(4).intValue()])
.dataFormat(iArguments.get(5) == 1 ? Conv1DConfig.NCW : Conv1DConfig.NWC)
.build();
}
return config.getValue(property);
}
@Override
public Map propertiesForFunction() {
return config.toProperties();
}
@Override
public boolean isConfigProperties() {
return true;
}
@Override
public String configFieldName() {
return "config";
}
@Override
public String opName() {
return "conv1d_bp";
}
@Override
public int getNumOutputs(){
if(args().length == 4){
return 3; //Includes bias
} else {
return 2; //No bias - only input + weight grads
}
}
@Override
public List calculateOutputDataTypes(List inputDataTypes){
int n = args().length;
Preconditions.checkState(inputDataTypes != null && inputDataTypes.size() == n, "Expected %s input data types for %s, got %s", n, getClass(), inputDataTypes);
return new ArrayList<>(inputDataTypes.subList(0, inputDataTypes.size()-1)); //All except gradient input variable
}
}