Tflearn ValueError：形状（256，？）必须至少排名 3答案

【问题标题】：Tflearn ValueError: Shape (256, ?) must have rank at least 3Tflearn ValueError：形状（256，？）必须至少排名 3
【发布时间】：2018-05-19 17:53:37
【问题描述】：

    print(network.shape ) # ( ? , 256, 2, 128 ) 
    network = reshape(network,[-1,256,256])
    print(network.shape) # ( ? , 256, 256 )  batch_Size,time_stamp,features 
    network = bidirectional_rnn(network, GRUCell(32 ), GRUCell(32) )

我正在尝试使用 tflearn 编写 CRNN，这是我得到的日志：

  File "data_clean.py", line 117, in sai_net
    network = bidirectional_rnn(network, GRUCell(32 ), GRUCell(32) )
  File "/usr/local/lib/python2.7/dist-packages/tflearn/layers/recurrent.py", line 374, in bidirectional_rnn
    dtype=tf.float32)
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/ops/rnn.py", line 405, in bidirectional_dynamic_rnn
    time_major=time_major, scope=fw_scope)
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/ops/rnn.py", line 598, in dynamic_rnn
    dtype=dtype)
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/ops/rnn.py", line 661, in _dynamic_rnn_loop
    for input_ in flat_input)
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/ops/rnn.py", line 661, in <genexpr>
    for input_ in flat_input)
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/framework/tensor_shape.py", line 654, in with_rank_at_least
    raise ValueError("Shape %s must have rank at least %d" % (self, rank))
ValueError: Shape (256, ?) must have rank at least 3

我错过了什么吗，因为张量是三个维度的，第一个是批量大小，我将提供给网络。类似的代码在 keras 上完美运行。我在这里错过了什么吗？

【问题讨论】：

标签： python tensorflow lstm rnn tflearn

【解决方案1】：

似乎是一个已知问题：https://github.com/tflearn/tflearn/issues/818，发生在 tensorflow 1.2 及更高版本中。

【讨论】：