在为神经机器翻译系统实施最低风险培训的任务中，我需要对句子进行采样并收集采样字ID的相应对数。聚会的步骤如下：
for i in range(1,self._num_of_samples):
logits, _, _, sampled_ids = self.decoder._decoding_loop(train_mode=False,sample=True)
ind=[[[tf.constant(i),tf.constant(j),sampled_ids[i][j]] for j in range(self.batch_size)] for i in range(self.decoder.max_output_len)]
gathered_logits = tf.gather_nd(logits,ind)
sentence_sum_logit = tf.reduce_sum(gathered_logits,0)
self.sample_sen_ids = self.sample_sen_ids.write(steps[i],sampled_ids)
self.sample_logits = self.sample_logits.write(steps[i], sentence_sum_logit)
self.sample_sen_ids = tf.transpose(self.sample_sen_ids.stack())
self.sample_logits = tf.transpose(self.sample_logits.stack())
但我不明白为什么经过一些批次我得到了这个：
Traceback (most recent call last):
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 1022, in _do_call
return fn(*args)
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 1004, in _run_fn
status, run_metadata)
File "/usr/lib/python3.5/contextlib.py", line 66, in __exit__
next(self.gen)
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/framework/errors_impl.py", line 466, in raise_exception_on_not_ok_status
pywrap_tensorflow.TF_GetCode(status))
tensorflow.python.framework.errors_impl.InvalidArgumentError: slice index 49 of dimension 0 out of bounds.
[[Node: sampling/strided_slice_4900 = StridedSlice[Index=DT_INT32, T=DT_INT32, begin_mask=0, ellipsis_mask=0, end_mask=0, new_axis_mask=0, shrink_axis_mask=1, _device="/job:localhost/replica:0/task:0/cpu:0"](sampling/TensorArrayStack_3/TensorArrayGatherV3, sampling/strided_slice_4900/stack, sampling/strided_slice_4900/stack_1, sampling/strided_slice_4900/stack_2)]]
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "bin/neuralmonkey-train", line 6, in <module>
main()
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/train.py", line 211, in main
initial_variables=cfg.model.initial_variables)
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/learning_utils.py", line 185, in training_loop
results, meta=tf_manager.execute(batch_dataset, [trainer],train=True, summaries=False)
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/tf_manager.py", line 217, in execute
for sess in self.sessions]
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/tf_manager.py", line 217, in <listcomp>
for sess in self.sessions]
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 767, in run
run_metadata_ptr)
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 965, in _run
feed_dict_string, options, run_metadata)
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 1015, in _do_run
target_list, options, run_metadata)
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 1035, in _do_call
raise type(e)(node_def, op, message)
tensorflow.python.framework.errors_impl.InvalidArgumentError: slice index 49 of dimension 0 out of bounds.
[[Node: sampling/strided_slice_4900 = StridedSlice[Index=DT_INT32, T=DT_INT32, begin_mask=0, ellipsis_mask=0, end_mask=0, new_axis_mask=0, shrink_axis_mask=1, _device="/job:localhost/replica:0/task:0/cpu:0"](sampling/TensorArrayStack_3/TensorArrayGatherV3, sampling/strided_slice_4900/stack, sampling/strided_slice_4900/stack_1, sampling/strided_slice_4900/stack_2)]]
Caused by op 'sampling/strided_slice_4900', defined at:
File "bin/neuralmonkey-train", line 6, in <module>
main()
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/train.py", line 170, in main
cfg.build_model(warn_unused=True)
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/config/configuration.py", line 86, in build_model
model = build_config(self.config_dict, self.ignored, warn_unused)
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/config/builder.py", line 198, in build_config
value, config_dicts, existing_objects, 0)
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/config/builder.py", line 109, in build_object
obj = instantiate_class(value[7:], all_dicts, existing_objects, depth)
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/config/builder.py", line 165, in instantiate_class
obj = clazz(*bounded_params.args, **bounded_params.kwargs)
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/trainers/mrt_trainer.py", line 80, in __init__
ind=[[[tf.constant(i),tf.constant(j),sampled_ids[i][j]] for j in range(self.batch_size)] for i in range(self.decoder.max_output_len)]
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/trainers/mrt_trainer.py", line 80, in <listcomp>
ind=[[[tf.constant(i),tf.constant(j),sampled_ids[i][j]] for j in range(self.batch_size)] for i in range(self.decoder.max_output_len)]
File "/home/stoyan/neuralmonkey/bin/neuralmonkey/trainers/mrt_trainer.py", line 80, in <listcomp>
ind=[[[tf.constant(i),tf.constant(j),sampled_ids[i][j]] for j in range(self.batch_size)] for i in range(self.decoder.max_output_len)]
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/ops/array_ops.py", line 495, in _SliceHelper
name=name)
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/ops/array_ops.py", line 653, in strided_slice
shrink_axis_mask=shrink_axis_mask)
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/ops/gen_array_ops.py", line 3688, in strided_slice
shrink_axis_mask=shrink_axis_mask, name=name)
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/framework/op_def_library.py", line 763, in apply_op
op_def=op_def)
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/framework/ops.py", line 2327, in create_op
original_op=self._default_original_op, op_def=op_def)
File "/home/stoyan/neurmon/lib/python3.5/site-packages/tensorflow/python/framework/ops.py", line 1226, in __init__
self._traceback = _extract_stack()
InvalidArgumentError (see above for traceback): slice index 49 of dimension 0 out of bounds.
[[Node: sampling/strided_slice_4900 = StridedSlice[Index=DT_INT32, T=DT_INT32, begin_mask=0, ellipsis_mask=0, end_mask=0, new_axis_mask=0, shrink_axis_mask=1, _device="/job:localhost/replica:0/task:0/cpu:0"](sampling/TensorArrayStack_3/TensorArrayGatherV3, sampling/strided_slice_4900/stack, sampling/strided_slice_4900/stack_1, sampling/strided_slice_4900/stack_2)]]
这个InvalidArgumentError应该提到什么以及出了什么问题？
最佳， 斯托
答案 0 :(得分：0)
根据堆栈跟踪，错误来自代码中的此表达式：
sampled_ids[i][j]
...但如果没有上下文，是否来自[i]切片或[j]切片是很难说的。据推测，该结构中的一个张量在第0维中具有少于15个（或错误消息中的49个）元素。如果输入数据包含用于训练模型的词汇表中不存在的单词ID，通常会发生这种情况。