{"record":{"id":"79f4b2fea49786ab","repo":"tensorflow/models","slug":"activation-not-supported-by-default8bitactivati-79f4b2","errorCode":null,"errorMessage":"Activation {} not supported by Default8BitActivationQuantizeConfig.","messagePattern":"Activation (.+?) not supported by Default8BitActivationQuantizeConfig\\.","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"official/projects/qat/vision/quantization/configs.py","lineNumber":300,"sourceCode":"      self,\n      layer: Layer,\n      quantize_weights: Sequence[tf.Tensor]):\n    \"\"\"See base class.\"\"\"\n    self._assert_activation_layer(layer)\n\n  def set_quantize_activations(\n      self,\n      layer: Layer,\n      quantize_activations: Sequence[Activation]):\n    \"\"\"See base class.\"\"\"\n    self._assert_activation_layer(layer)\n\n  def get_output_quantizers(self, layer: Layer) -> Sequence[Quantizer]:\n    \"\"\"See base class.\"\"\"\n    self._assert_activation_layer(layer)\n\n    if not hasattr(layer.activation, '__name__'):\n      raise ValueError('Activation {} not supported by '\n                       'Default8BitActivationQuantizeConfig.'.format(\n                           layer.activation))\n\n    # This code is copied from TFMOT repo, but added relu6 to support mobilenet.\n    if layer.activation.__name__ in ['relu', 'relu6', 'swish', 'hard_swish']:\n      # 'relu' should generally get fused into the previous layer.\n      return [tfmot.quantization.keras.quantizers.MovingAverageQuantizer(\n          num_bits=8, per_axis=False, symmetric=False, narrow_range=False)]\n    elif layer.activation.__name__ in [\n        'linear', 'softmax', 'sigmoid', 'hard_sigmoid'\n    ]:\n      return []\n\n    raise ValueError('Activation {} not supported by '\n                     'Default8BitActivationQuantizeConfig.'.format(\n                         layer.activation))\n\n  def get_config(self) -> Dict[str, Any]:","sourceCodeStart":282,"sourceCodeEnd":318,"githubUrl":"https://github.com/tensorflow/models/blob/e006f5f0d534913e49c1f1dae87364039fa607e2/official/projects/qat/vision/quantization/configs.py#L282-L318","documentation":"Error \"Activation {} not supported by Default8BitActivationQuantizeConfig.\" thrown in tensorflow/models.","triggerScenarios":"Thrown at official/projects/qat/vision/quantization/configs.py:300 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"e006f5f0d534913e49c1f1dae87364039fa607e2","analyzedAt":"2026-08-24T14:09:15.576Z","schemaVersion":2},"datasetVersion":"2026-08-24T17:17:21.512Z"}