Commit 82ea80b9 authored by A. Unique TensorFlower's avatar A. Unique TensorFlower Committed by TensorFlower Gardener
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Add option in tf.gradients() to return zero tensors for unconnected gradients. 

tf.gradients currently returns [NONE] when the gradient of unconnected variables
is required. This backwards compatable change adds in the option to have zero
tensors returned that match the dimensions of the input tensor.

PiperOrigin-RevId: 215725488
parent 2c9369c8
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