org.deeplearning4j.arbiter.conf.updater.AdamSpace Maven / Gradle / Ivy
package org.deeplearning4j.arbiter.conf.updater;
import lombok.Data;
import lombok.EqualsAndHashCode;
import org.deeplearning4j.arbiter.optimize.api.ParameterSpace;
import org.nd4j.linalg.learning.config.Adam;
import org.nd4j.linalg.learning.config.IUpdater;
import org.nd4j.linalg.schedule.ISchedule;
import org.nd4j.shade.jackson.annotation.JsonProperty;
@Data
@EqualsAndHashCode(callSuper = false)
public class AdamSpace extends BaseUpdaterSpace {
private ParameterSpace learningRate;
private ParameterSpace learningRateSchedule;
private ParameterSpace beta1;
private ParameterSpace beta2;
private ParameterSpace epsilon;
public AdamSpace(ParameterSpace learningRate) {
this(learningRate, null, null, null);
}
public AdamSpace(ParameterSpace learningRate, ParameterSpace beta1,
ParameterSpace beta2, ParameterSpace epsilon) {
this(learningRate, null, beta1, beta2, epsilon);
}
public static AdamSpace withLR(ParameterSpace lr){
return new AdamSpace(lr, null, null, null, null);
}
public static AdamSpace withLRSchedule(ParameterSpace lrSchedule){
return new AdamSpace(null, lrSchedule, null, null, null);
}
protected AdamSpace(@JsonProperty("learningRate") ParameterSpace learningRate,
@JsonProperty("learningRateSchedule") ParameterSpace learningRateSchedule,
@JsonProperty("beta1") ParameterSpace beta1,
@JsonProperty("beta2") ParameterSpace beta2,
@JsonProperty("epsilon") ParameterSpace epsilon){
this.learningRate = learningRate;
this.learningRateSchedule = learningRateSchedule;
this.beta1 = beta1;
this.beta2 = beta2;
this.epsilon = epsilon;
}
@Override
public IUpdater getValue(double[] parameterValues) {
double lr = learningRate == null ? Adam.DEFAULT_ADAM_LEARNING_RATE : learningRate.getValue(parameterValues);
ISchedule lrS = learningRateSchedule == null ? null : learningRateSchedule.getValue(parameterValues);
double b1 = beta1 == null ? Adam.DEFAULT_ADAM_LEARNING_RATE : beta1.getValue(parameterValues);
double b2 = beta2 == null ? Adam.DEFAULT_ADAM_LEARNING_RATE : beta2.getValue(parameterValues);
double eps = epsilon == null ? Adam.DEFAULT_ADAM_LEARNING_RATE : epsilon.getValue(parameterValues);
if(lrS == null){
return new Adam(lr, b1, b2, eps);
} else {
Adam a = new Adam(lrS);
a.setBeta1(b1);
a.setBeta2(b2);
a.setEpsilon(eps);
return a;
}
}
}