org.nd4j.weightinit.impl.LecunUniformInitScheme 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 LecunUniformInitScheme extends BaseWeightInitScheme {
private double fanIn;
@Builder
public LecunUniformInitScheme(char order, double fanIn) {
super(order);
this.fanIn = fanIn;
}
@Override
public INDArray doCreate(int[] shape, INDArray paramsView) {
double b = 3.0 / Math.sqrt(fanIn);
return Nd4j.rand(shape, Nd4j.getDistributions().createUniform(-b, b));
}
@Override
public WeightInit type() {
return WeightInit.LECUN_UNIFORM;
}
}