TFLearn：定义 DNN 的正确维度

Question

我正在使用 Python 3.5 中的 TFLearn 为模式识别问题构建 DNN。我的输入形状为 [50, 300]，所以粗略地说，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？

感谢您的建议

Answer 1

定义网络没有问题，但问题是 X 和 Y，首先它们是列表但它们应该是数组，如果你先修复它然后检查你适合的数组的形状会更好。

检查这个：

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