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SaxpyMap.java
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SaxpyMap.java
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/*
*
* * Copyright 2015 Skymind,Inc.
* *
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://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.
*
*/
package org.deeplearning4j.spark.models.embeddings.common;
import com.hazelcast.core.IFunction;
import org.deeplearning4j.models.embeddings.inmemory.InMemoryLookupTable;
import org.nd4j.linalg.api.buffer.DataBuffer;
import org.nd4j.linalg.factory.Nd4j;
/**
* Run a saxpy function on a hazelcast object
* @author Adam Gibson
*/
public class SaxpyMap extends BaseWord2VecFunction implements IFunction<InMemoryLookupTable,InMemoryLookupTable> {
private Number alpha;
public SaxpyMap(Number alpha, int fromIndex, int toIndex, String from, String to) {
super(fromIndex, toIndex, from, to);
this.alpha = alpha;
}
@Override
public InMemoryLookupTable apply(InMemoryLookupTable inMemoryLookupTable) {
if(inMemoryLookupTable.getSyn0().data().dataType() == DataBuffer.Type.DOUBLE)
Nd4j.getBlasWrapper().axpy(alpha.doubleValue(),getFrom(inMemoryLookupTable),getTo(inMemoryLookupTable));
else
Nd4j.getBlasWrapper().axpy(alpha.floatValue(),getFrom(inMemoryLookupTable),getTo(inMemoryLookupTable));
return inMemoryLookupTable;
}
}