TFLearn：定义DNN的正确尺寸

Question

我正在使用Python 3.5中的TFLearn构建用于模式识别问题的DNN。 我的输入的形状为[50，300]，因此大致来说，我的训练集是一个数组列表，每个数组由50个元素组成，这些元素是300个元素的数组。

我正在构建的所有数组都是NumPy数组。

这是我正在使用的代码：

training = np.array(training)

# create train and test lists
train_x = list(training[:,0])
print(train_x[0])
train_y = list(training[:,1])
# reset underlying graph data
tf.reset_default_graph()
mean = int(len(train_x[0])/len(train_y[0]))
net = tflearn.input_data(shape=[None, 50, 300])
net = tflearn.fully_connected(net, mean)
net = tflearn.fully_connected(net, mean)
net = tflearn.fully_connected(net, len(train_y[0]), activation='softmax')
net = tflearn.regression(net)
# Define model and setup tensorboard
model = tflearn.DNN(net, tensorboard_dir='tflearn_logs')
# Start training (apply gradient descent algorithm)
model.fit(train_x, train_y, show_metric=True)

但是我得到的错误如下：

Traceback (most recent call last):
  File "/Users/Foo/Bar/test.py", line 82, in <module>
model.fit(train_x, train_y, show_metric=True)
  File "/usr/local/lib/python3.5/site-packages/tflearn/models/dnn.py", line 215, in fit
callbacks=callbacks)
  File "/usr/local/lib/python3.5/site-packages/tflearn/helpers/trainer.py", line 336, in fit
show_metric)
  File "/usr/local/lib/python3.5/site-packages/tflearn/helpers/trainer.py", line 777, in _train
feed_batch)
  File "/usr/local/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 778, in run
run_metadata_ptr)
  File "/usr/local/lib/python3.5/site-packages/tensorflow/python/client/session.py", line 954, in _run
np_val = np.asarray(subfeed_val, dtype=subfeed_dtype)
  File "/usr/local/lib/python3.5/site-packages/numpy/core/numeric.py", line 531, in asarray
return array(a, dtype, copy=False, order=order)
ValueError: setting an array element with a sequence.

可能我没有很好地定义网络的形状。 我该如何解决？

谢谢建议

Answer 1

定义网络没有错，但问题是X和Y，首先它们是列表，但它们应该是数组，如果先修复该问题然后检查适合的数组的形状，则更好。

检查一下：

# create train and test lists
train_x = training[:,0].reshape([-1,50,300])
print(train_x.shape)
train_y = training[:,1]