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Implement L2Loss gradient. #12391

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merged 4 commits into from
Aug 28, 2017
Merged

Implement L2Loss gradient. #12391

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641e71a
Implement L2Loss gradient.
bpiel Aug 18, 2017
da88b94
Merge branch 'master' into l2lossgrad
jhseu Aug 24, 2017
e5ac94c
Merge remote-tracking branch 'origin/master' into l2lossgrad
bpiel Aug 25, 2017
02a5938
Merge remote-tracking branch 'tensorflow/master' into l2lossgrad
bpiel Aug 26, 2017
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8 changes: 8 additions & 0 deletions tensorflow/cc/gradients/nn_grad.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -95,6 +95,14 @@ Status SeluGradHelper(const Scope& scope, const Operation& op,
}
REGISTER_GRADIENT_OP("Selu", SeluGradHelper);

Status L2LossGrad(const Scope& scope, const Operation& op,
const std::vector<Output>& grad_inputs,
std::vector<Output>* grad_outputs) {
grad_outputs->push_back(Mul(scope, op.input(0), grad_inputs[0]));
return scope.status();
}
REGISTER_GRADIENT_OP("L2Loss", L2LossGrad);

Status BiasAddGradHelper(const Scope& scope, const Operation& op,
const std::vector<Output>& grad_inputs,
std::vector<Output>* grad_outputs) {
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8 changes: 8 additions & 0 deletions tensorflow/cc/gradients/nn_grad_test.cc
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Expand Up @@ -122,6 +122,14 @@ TEST_F(NNGradTest, SeluGrad) {
RunTest(x, x_init_value, y, shape);
}

TEST_F(NNGradTest, L2LossGrad) {
TensorShape x_shape({5, 2});
TensorShape y_shape({1});
auto x = Placeholder(scope_, DT_FLOAT, Placeholder::Shape(x_shape));
auto y = L2Loss(scope_, x);
RunTest(x, x_shape, y, y_shape);
}

TEST_F(NNGradTest, BiasAddGradHelper) {
TensorShape shape({4, 5});
TensorShape bias_shape({5});
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