org.nd4j.weightinit.impl.ReluInitScheme Maven / Gradle / Ivy
package org.nd4j.weightinit.impl;
import lombok.Builder;
import org.apache.commons.math3.util.FastMath;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.factory.Nd4j;
import org.nd4j.weightinit.BaseWeightInitScheme;
import org.nd4j.weightinit.WeightInit;
/**
* Initialize the weight to:
* randn(shape) //N(0, 2/nIn);
* @author Adam Gibson
*/
public class ReluInitScheme extends BaseWeightInitScheme {
private double fanIn;
@Builder
public ReluInitScheme(char order,double fanIn) {
super(order);
this.fanIn = fanIn;
}
@Override
public INDArray doCreate(int[] shape, INDArray paramsView) {
return Nd4j.randn(order(), shape).muli(FastMath.sqrt(2.0 / fanIn)); //N(0, 2/nIn);
}
@Override
public WeightInit type() {
return WeightInit.RELU;
}
}