我正在根据本教程在 HuggingFace 的转换器中使用 Tensorflow 的 BERT 运行代码：
在 Python 中使用 BERT Tokenizer 和 TF 2.0 进行文本分类
但是，我没有创建自己的神经网络，而是使用了转换器，并且：
tokenizer = BertTokenizer.from_pretrained('bert-base-cased')
model0 = TFBertForSequenceClassification.from_pretrained('bert-base-cased')
我能够生成以下训练数据：
(<tf.Tensor: id=6582, shape=(20, 70), dtype=int32, numpy=
array([[ 191, 19888, 1186, 0, ..., 0, 0, 0, 0],
[ 7353, 1200, 2180, 1197, ..., 0, 0, 0, 0],
[ 164, 112, 12890, 5589, ..., 0, 0, 0, 0],
[ 164, 112, 21718, 19009, ..., 0, 0, 0, 0],
...,
[ 7998, 3101, 164, 112, ..., 0, 0, 0, 0],
[ 164, 112, 154, 4746, ..., 0, 0, 0, 0],
[ 164, 112, 1842, 23228, ..., 1162, 112, 166, 0],
[ 164, 112, 140, 3814, ..., 7443, 119, 112, 166]], dtype=int32)>,
<tf.Tensor: id=6583, shape=(20,), dtype=int32, numpy=array([0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0], dtype=int32)>)
但据我所见，词汇文件肯定存在问题，即未定义。运行时我还收到以下警告：
train2=[]
for i in range(0,train.shape[0]):
out=tokenizer.convert_tokens_to_ids(tokenizer.tokenize(str(train.iloc[i,1])))
print(i)
train2.append(out)
WARNING:transformers.tokenization_utils:Token indices sequence length is longer than the specified maximum sequence length for this model (6935 > 512). Running this sequence through the model will result in indexing errors
WARNING:transformers.tokenization_utils:Token indices sequence length is longer than the specified maximum sequence length for this model (3574 > 512). Running this sequence through the model will result in indexing errors
model0成功创建：
Model: "tf_bert_for_sequence_classification"
_________________________________________________________________
Layer (type) Output Shape Param #
=================================================================
bert (TFBertMainLayer) multiple 108310272
_________________________________________________________________
dropout_37 (Dropout) multiple 0
_________________________________________________________________
classifier (Dense) multiple 1538
=================================================================
Total params: 108,311,810
Trainable params: 108,311,810
Non-trainable params: 0
_________________________________________________________________
然后：
model0.fit(train_data, epochs=2, steps_per_epoch=30,validation_data=test_data, validation_steps=7)
我收到以下错误：
Train for 1 steps
Epoch 1/2
1/1 [==============================] - 21s 21s/step
---------------------------------------------------------------------------
InvalidArgumentError Traceback (most recent call last)
<ipython-input-53-61d611c37004> in <module>
----> 1 history = model0.fit(train_data, epochs=2, steps_per_epoch=1)#,validation_data=test_data, validation_steps=7)
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/keras/engine/training.py in fit(self, x, y, batch_size, epochs, verbose, callbacks, validation_split, validation_data, shuffle, class_weight, sample_weight, initial_epoch, steps_per_epoch, validation_steps, validation_freq, max_queue_size, workers, use_multiprocessing, **kwargs)
726 max_queue_size=max_queue_size,
727 workers=workers,
--> 728 use_multiprocessing=use_multiprocessing)
729
730 def evaluate(self,
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/keras/engine/training_v2.py in fit(self, model, x, y, batch_size, epochs, verbose, callbacks, validation_split, validation_data, shuffle, class_weight, sample_weight, initial_epoch, steps_per_epoch, validation_steps, validation_freq, **kwargs)
322 mode=ModeKeys.TRAIN,
323 training_context=training_context,
--> 324 total_epochs=epochs)
325 cbks.make_logs(model, epoch_logs, training_result, ModeKeys.TRAIN)
326
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/keras/engine/training_v2.py in run_one_epoch(model, iterator, execution_function, dataset_size, batch_size, strategy, steps_per_epoch, num_samples, mode, training_context, total_epochs)
121 step=step, mode=mode, size=current_batch_size) as batch_logs:
122 try:
--> 123 batch_outs = execution_function(iterator)
124 except (StopIteration, errors.OutOfRangeError):
125 # TODO(kaftan): File bug about tf function and errors.OutOfRangeError?
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/keras/engine/training_v2_utils.py in execution_function(input_fn)
84 # `numpy` translates Tensors to values in Eager mode.
85 return nest.map_structure(_non_none_constant_value,
---> 86 distributed_function(input_fn))
87
88 return execution_function
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/eager/def_function.py in __call__(self, *args, **kwds)
455
456 tracing_count = self._get_tracing_count()
--> 457 result = self._call(*args, **kwds)
458 if tracing_count == self._get_tracing_count():
459 self._call_counter.called_without_tracing()
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/eager/def_function.py in _call(self, *args, **kwds)
518 # Lifting succeeded, so variables are initialized and we can run the
519 # stateless function.
--> 520 return self._stateless_fn(*args, **kwds)
521 else:
522 canon_args, canon_kwds = \
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/eager/function.py in __call__(self, *args, **kwargs)
1821 """Calls a graph function specialized to the inputs."""
1822 graph_function, args, kwargs = self._maybe_define_function(args, kwargs)
-> 1823 return graph_function._filtered_call(args, kwargs) # pylint: disable=protected-access
1824
1825 @property
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/eager/function.py in _filtered_call(self, args, kwargs)
1139 if isinstance(t, (ops.Tensor,
1140 resource_variable_ops.BaseResourceVariable))),
-> 1141 self.captured_inputs)
1142
1143 def _call_flat(self, args, captured_inputs, cancellation_manager=None):
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/eager/function.py in _call_flat(self, args, captured_inputs, cancellation_manager)
1222 if executing_eagerly:
1223 flat_outputs = forward_function.call(
-> 1224 ctx, args, cancellation_manager=cancellation_manager)
1225 else:
1226 gradient_name = self._delayed_rewrite_functions.register()
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/eager/function.py in call(self, ctx, args, cancellation_manager)
509 inputs=args,
510 attrs=("executor_type", executor_type, "config_proto", config),
--> 511 ctx=ctx)
512 else:
513 outputs = execute.execute_with_cancellation(
/opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/eager/execute.py in quick_execute(op_name, num_outputs, inputs, attrs, ctx, name)
65 else:
66 message = e.message
---> 67 six.raise_from(core._status_to_exception(e.code, message), None)
68 except TypeError as e:
69 keras_symbolic_tensors = [
~/.local/lib/python3.7/site-packages/six.py in raise_from(value, from_value)
InvalidArgumentError: 2 root error(s) found.
(0) Invalid argument: indices[0,624] = 624 is not in [0, 512)
[[node tf_bert_for_sequence_classification/bert/embeddings/position_embeddings/embedding_lookup (defined at /opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/framework/ops.py:1751) ]]
(1) Invalid argument: indices[0,624] = 624 is not in [0, 512)
[[node tf_bert_for_sequence_classification/bert/embeddings/position_embeddings/embedding_lookup (defined at /opt/anaconda3/lib/python3.7/site-packages/tensorflow_core/python/framework/ops.py:1751) ]]
[[GroupCrossDeviceControlEdges_0/Adam/Adam/Const/_867]]
0 successful operations.
0 derived errors ignored. [Op:__inference_distributed_function_36559]
Function call stack:
distributed_function -> distributed_function
我的数据由一列 2 个类组成，另一列是短语。
我能做些什么 ？
