org.nd4j.linalg.api.ops.impl.indexaccum.custom.ArgMin Maven / Gradle / Ivy
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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.indexaccum.custom;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.base.Preconditions;
import org.nd4j.imports.graphmapper.tf.TFGraphMapper;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.api.ops.DynamicCustomOp;
import org.tensorflow.framework.AttrValue;
import org.tensorflow.framework.GraphDef;
import org.tensorflow.framework.NodeDef;
import java.util.Collections;
import java.util.List;
import java.util.Map;
/**
* ArgMin function
*
* @author Alex Black
*/
public class ArgMin extends DynamicCustomOp {
protected DataType outputType = DataType.LONG;
@Override
public String opName() {
return "argmin";
}
@Override
public String tensorflowName() {
return "ArgMin";
}
@Override
public void initFromTensorFlow(NodeDef nodeDef, SameDiff initWith, Map attributesForNode, GraphDef graph) {
if(attributesForNode.containsKey("output_type")) {
outputType = TFGraphMapper.convertType(attributesForNode.get("output_type").getType());
} else {
outputType = DataType.LONG;
}
}
@Override
public List calculateOutputDataTypes(List inputDataTypes){
Preconditions.checkState(inputDataTypes != null && (inputDataTypes.size() == 1 || inputDataTypes.size() == 2),
"Expected 1 or 2 input datatype to argmax, got %s", inputDataTypes); //2nd input: axis
//TODO make this output datatype configurable! (long/int)
return Collections.singletonList(outputType == null ? DataType.LONG : outputType);
}
}