tensorflow runtime_error ai_generated true

LookupError: No gradient defined for operation

ID: tensorflow/custom-gradient-error

Also available as: JSON · Markdown
78%Fix Rate
82%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
2 active — — —

Root Cause

TF op has no gradient implementation for backpropagation.

generic

Workarounds

  1. 90% success Register custom gradient with @tf.custom_gradient decorator
  2. 85% success Use tf.py_function with gradient override for custom ops

Dead Ends

Common approaches that don't work:

  1. Use tf.stop_gradient everywhere 82% fail

    No learning for those parameters

  2. Implement numerical gradient 78% fail

    Very slow and inaccurate