TypeError：不兼容的可廣播尺寸。預計（假），得到（真）

Question

我正在與theano和烤寬麪條。

我想使用BatchNorm，我得到這個錯誤。有人能指導我，有什麼可能是錯的？或者，如果我可以得到具有這種不匹配的變量的名稱？

謝謝！

EDIT1：

我試圖做這樣的事情：

inputTarget = lasagne.layers.InputLayer(shape=(1,2,32, 32, 32), input_var=T.concatenate([tX, tY], axis=1)) 
network = lasagne.layers.SliceLayer(inputTarget, indices=slice(0, 1),axis=1) 
tX_new = lasagne.layers.get_output(network) 
network = lasagne.layers.batch_norm(network) 
tY_predicted = lasagne.layers.get_output(network) 
target= lasagne.layers.SliceLayer(inputTarget, indices=slice(1, None), axis=1) 

tY_new = lasagne.layers.get_output(target) 
loss = lasagne.objectives.squared_error(tY_predicted, tY_new).mean() 
updates = lasagne.updates.adam(loss, params, learning_rate=lr) 
train_fn = theano.function([tX, tY], [tY_predicted, loss, tY_new, tX_new], updates=updates) 

日誌：

Traceback (most recent call last): 
    train_fn = theano.function([tX, tY], [tY_predicted, loss, tY_new, tX_new], updates=updates) 
    File "/lib/python2.7/site-packages/theano/compile/function.py", line 326, in function 
    output_keys=output_keys) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 449, in pfunc 
    no_default_updates=no_default_updates) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 219, in rebuild_collect_shared 
    cloned_v = clone_v_get_shared_updates(v, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 93, in clone_v_get_shared_updates 
    clone_v_get_shared_updates(i, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 93, in clone_v_get_shared_updates 
    clone_v_get_shared_updates(i, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 219, in rebuild_collect_shared 
    cloned_v = clone_v_get_shared_updates(v, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 93, in clone_v_get_shared_updates 
    clone_v_get_shared_updates(i, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 93, in clone_v_get_shared_updates 
    clone_v_get_shared_updates(i, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 93, in clone_v_get_shared_updates 
    clone_v_get_shared_updates(i, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 93, in clone_v_get_shared_updates 
    clone_v_get_shared_updates(i, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 93, in clone_v_get_shared_updates 
    clone_v_get_shared_updates(i, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 93, in clone_v_get_shared_updates 
    clone_v_get_shared_updates(i, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 93, in clone_v_get_shared_updates 
    clone_v_get_shared_updates(i, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 93, in clone_v_get_shared_updates 
    clone_v_get_shared_updates(i, copy_inputs_over) 
    File "/lib/python2.7/site-packages/theano/compile/pfunc.py", line 114, in clone_v_get_shared_updates 
    allow_convert=False) 
    File "/lib/python2.7/site-packages/theano/sandbox/cuda/type.py", line 185, in filter_variable 
    str(self.broadcastable))) 
TypeError: Incompatible broadcastable dimensions. Expected (False,), got (True,). 

檢查變量之後，我知道這些代碼減免平均值。我無法弄清楚爲什麼。

Answer 1

Theano不會像numpy那樣（自動）做廣播。您必須手動設置您需要進行廣播的維度。有關於廣播here的驚人教程。如果在閱讀本教程後，您的問題仍然存在，請分享您的代碼和完整的回溯信息，以幫助您進一步瞭解。