fix backward error of huber_regression_cost

8 years ago · 73ab2d4678
parent 1c0a1a076d
commit 73ab2d4678
1 changed files with 1 additions and 1 deletions
--- a/paddle/gserver/layers/CostLayer.cpp
+++ b/paddle/gserver/layers/CostLayer.cpp
@ -644,7 +644,7 @@ void HuberRegressionLoss::backwardImp(Matrix& output,
    if (std::abs(a) <= delta_)
      grad[i] += -a;
    else
-      grad[i] += a > 0 ? delta_ : -delta_;
+      grad[i] += a > 0 ? -delta_ : delta_;
  }
  if (useGpu_) outputG.copyFrom(grad, numSamples);
 }