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我試圖創建在自定義過濾器與keras
from keras.layers import Input, LSTM, concatenate
from keras.models import Model
from keras.utils.vis_utils import model_to_dot
from IPython.display import display, SVG
inputs = Input(shape=(None, 4))
filter_unit = LSTM(1)
conv = concatenate([filter_unit(inputs[..., 0:2]),
filter_unit(inputs[..., 2:4])])
model = Model(inputs=inputs, outputs=conv)
SVG(model_to_dot(model, show_shapes=True).create(prog='dot', format='svg'))
我試圖切片沿着特徵尺寸輸入張量分裂(人工小)輸入keras卷積網絡與兩個單位的過濾器一起使用。在這個例子中,過濾器是一個單獨的LSTM單元。我希望能夠使用任意模型代替LSTM。
然而,這種失敗的model = ...
線:如果LSTM
由Dense
替換髮生
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-6-a9f7f2ffbe17> in <module>()
9 conv = concatenate([filter_unit(inputs[..., 0:2]),
10 filter_unit(inputs[..., 2:4])])
---> 11 model = Model(inputs=inputs, outputs=conv)
12 SVG(model_to_dot(model, show_shapes=True).create(prog='dot', format='svg'))
~/.local/opt/anaconda3/envs/trafficprediction/lib/python3.6/site-packages/keras/legacy/interfaces.py in wrapper(*args, **kwargs)
86 warnings.warn('Update your `' + object_name +
87 '` call to the Keras 2 API: ' + signature, stacklevel=2)
---> 88 return func(*args, **kwargs)
89 wrapper._legacy_support_signature = inspect.getargspec(func)
90 return wrapper
~/.local/opt/anaconda3/envs/trafficprediction/lib/python3.6/site-packages/keras/engine/topology.py in __init__(self, inputs, outputs, name)
1703 nodes_in_progress = set()
1704 for x in self.outputs:
-> 1705 build_map_of_graph(x, finished_nodes, nodes_in_progress)
1706
1707 for node in reversed(nodes_in_decreasing_depth):
~/.local/opt/anaconda3/envs/trafficprediction/lib/python3.6/site-packages/keras/engine/topology.py in build_map_of_graph(tensor, finished_nodes, nodes_in_progress, layer, node_index, tensor_index)
1693 tensor_index = node.tensor_indices[i]
1694 build_map_of_graph(x, finished_nodes, nodes_in_progress,
-> 1695 layer, node_index, tensor_index)
1696
1697 finished_nodes.add(node)
~/.local/opt/anaconda3/envs/trafficprediction/lib/python3.6/site-packages/keras/engine/topology.py in build_map_of_graph(tensor, finished_nodes, nodes_in_progress, layer, node_index, tensor_index)
1693 tensor_index = node.tensor_indices[i]
1694 build_map_of_graph(x, finished_nodes, nodes_in_progress,
-> 1695 layer, node_index, tensor_index)
1696
1697 finished_nodes.add(node)
~/.local/opt/anaconda3/envs/trafficprediction/lib/python3.6/site-packages/keras/engine/topology.py in build_map_of_graph(tensor, finished_nodes, nodes_in_progress, layer, node_index, tensor_index)
1663 """
1664 if not layer or node_index is None or tensor_index is None:
-> 1665 layer, node_index, tensor_index = tensor._keras_history
1666 node = layer.inbound_nodes[node_index]
1667
AttributeError: 'Tensor' object has no attribute '_keras_history'
相同的問題。這個錯誤消息意味着什麼,這遠遠不清楚。我究竟做錯了什麼?
關於同一個錯誤有一個問題(下面的鏈接),但我不清楚應該如何使用Lambda層,或者如果這是甚至正確的解決方案。
AttributeError: 'Tensor' object has no attribute '_keras_history'
我認爲問題是你必須使用嵌入連接LSTM層。你見過[這篇文章](https://stackoverflow.com/questions/41052494/how-to-merge-two-lstm-layers-in-keras#41175522)? – rll
@rll感謝您的提示。然而,對網絡的輸入將是時間序列(實值),嵌入似乎主要用於單熱型輸入。另外,我描述的問題也發生在''LSTM''被''Dense''取代(我將更新問題以包含該信息)。 – josteinb