Applying Contextual Bandits for Recommendations with Tensorflow and TF-Agents recensioni

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I pip install -U tensorflow and pip install -U tf_agents in jupyter notebook. However, that was not sufficient, I got stuck at experience, unused_info = next(iter(dataset)) in cell 16: --------------------------------------------------------------------------- InvalidArgumentError Traceback (most recent call last) Cell In[17], line 14 6 batch_size = driver.env.batch_size 8 dataset = buf.as_dataset( 9 10 sample_batch_size = BATCH_SIZE, 11 num_steps=STEPS_PER_LOOP, 12 single_deterministic_pass=True) ---> 14 experience, unused_info = next(iter(dataset)) 15 train_loss = agent.train(experience).loss 16 buf.clear() File /opt/conda/lib/python3.9/site-packages/tensorflow/python/data/ops/iterator_ops.py:810, in OwnedIterator.__next__(self) 808 def __next__(self): 809 try: --> 810 return self._next_internal() 811 except errors.OutOfRangeError: 812 raise StopIteration File /opt/conda/lib/python3.9/site-packages/tensorflow/python/data/ops/iterator_ops.py:773, in OwnedIterator._next_internal(self) 770 # TODO(b/77291417): This runs in sync mode as iterators use an error status 771 # to communicate that there is no more data to iterate over. 772 with context.execution_mode(context.SYNC): --> 773 ret = gen_dataset_ops.iterator_get_next( 774 self._iterator_resource, 775 output_types=self._flat_output_types, 776 output_shapes=self._flat_output_shapes) 778 try: 779 # Fast path for the case `self._structure` is not a nested structure. 780 return self._element_spec._from_compatible_tensor_list(ret) # pylint: disable=protected-access File /opt/conda/lib/python3.9/site-packages/tensorflow/python/ops/gen_dataset_ops.py:3029, in iterator_get_next(iterator, output_types, output_shapes, name) 3027 return _result 3028 except _core._NotOkStatusException as e: -> 3029 _ops.raise_from_not_ok_status(e, name) 3030 except _core._FallbackException: 3031 pass File /opt/conda/lib/python3.9/site-packages/tensorflow/python/framework/ops.py:5883, in raise_from_not_ok_status(e, name) 5881 def raise_from_not_ok_status(e, name) -> NoReturn: 5882 e.message += (" name: " + str(name if name is not None else "")) -> 5883 raise core._status_to_exception(e) from None InvalidArgumentError: {{function_node __wrapped__IteratorGetNext_output_types_7_device_/job:localhost/replica:0/task:0/device:CPU:0}} assertion failed: [TFUniformReplayBuffer is empty. Make sure to add items before asking the buffer for data.] [Condition x < y did not hold element-wise:] [x (TFUniformReplayBuffer/single_deterministic_pass_dataset/SelectV2:0) = ] [0] [y (TFUniformReplayBuffer/single_deterministic_pass_dataset/SelectV2_1:0) = ] [0] [[{{function_node TFUniformReplayBuffer_single_deterministic_pass_dataset_assert_less_Assert_AssertGuard_false_1161}}{{node TFUniformReplayBuffer/single_deterministic_pass_dataset/assert_less/Assert/AssertGuard/Assert}}]] [Op:IteratorGetNext] name:

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ImportError: This version of TensorFlow Probability requires TensorFlow version >= 2.15; Detected an installation of version 2.11.0. Please upgrade TensorFlow to proceed.

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