org.nd4j.linalg.api.ops.impl.loss.CtcLoss Maven / Gradle / Ivy
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* * terms of the Apache License, Version 2.0 which is available at
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package org.nd4j.linalg.api.ops.impl.loss;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.DynamicCustomOp;
import org.nd4j.linalg.api.ops.impl.loss.bp.CtcLossBp;
import java.util.List;
public class CtcLoss extends DynamicCustomOp {
public CtcLoss(INDArray targetLabels, INDArray logitInputs, INDArray targetLabelLengths, INDArray logitInputLengths) {
super(new INDArray[]{targetLabels,logitInputs,targetLabelLengths,logitInputLengths},null);
}
public CtcLoss(SameDiff sameDiff, SDVariable targetLabels,SDVariable logitInputs,SDVariable targetLabelLengths,SDVariable logitInputLengths){
super(sameDiff,new SDVariable[]{targetLabels,logitInputs,targetLabelLengths,logitInputLengths});
}
public CtcLoss(){ }
@Override
public String opName() {
return "ctc_loss";
}
@Override
public List doDiff(List grad) {
//No external gradient
//Args are: predictions, weights, label
return new CtcLossBp(sameDiff, arg(0), arg(1), arg(2),arg(3)).outputs();
}
}