{"record":{"id":"286f810fba3ee08c","repo":"tensorflow/models","slug":"unsupported-act-type","errorCode":null,"errorMessage":"Unsupported act_type {}","messagePattern":"Unsupported act_type (.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"official/projects/edgetpu/vision/modeling/heads/bifpn_head.py","lineNumber":40,"sourceCode":"import tensorflow as tf, tf_keras\n\nfrom official.projects.edgetpu.vision.modeling import common_modules\n\n\ndef activation_fn(features: tf.Tensor, act_type: Text):\n  \"\"\"Customized non-linear activation type.\"\"\"\n  if act_type in ('silu', 'swish'):\n    return tf.nn.swish(features)\n  elif act_type == 'swish_native':\n    return features * tf.sigmoid(features)\n  elif act_type == 'hswish':\n    return features * tf.nn.relu6(features + 3) / 6\n  elif act_type == 'relu':\n    return tf.nn.relu(features)\n  elif act_type == 'relu6':\n    return tf.nn.relu6(features)\n  else:\n    raise ValueError('Unsupported act_type {}'.format(act_type))\n\n\ndef build_batch_norm(is_training_bn: bool,\n                     beta_initializer: Text = 'zeros',\n                     gamma_initializer: Text = 'ones',\n                     data_format: Text = 'channels_last',\n                     momentum: float = 0.99,\n                     epsilon: float = 1e-3,\n                     strategy: Optional[Text] = None,\n                     name: Text = 'tpu_batch_normalization'):\n  \"\"\"Builds a batch normalization layer.\n\n  Args:\n    is_training_bn: `bool` for whether the model is training.\n    beta_initializer: `str`, beta initializer.\n    gamma_initializer: `str`, gamma initializer.\n    data_format: `str` either \"channels_first\" for `[batch, channels, height,\n      width]` or \"channels_last for `[batch, height, width, channels]`.","sourceCodeStart":22,"sourceCodeEnd":58,"githubUrl":"https://github.com/tensorflow/models/blob/e006f5f0d534913e49c1f1dae87364039fa607e2/official/projects/edgetpu/vision/modeling/heads/bifpn_head.py#L22-L58","documentation":"Error \"Unsupported act_type {}\" thrown in tensorflow/models.","triggerScenarios":"Thrown at official/projects/edgetpu/vision/modeling/heads/bifpn_head.py:40 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"}