IndexError: tuple index out of range

Question

跑DNN的时候，遇到了下面的问题：

model = Sequential()
model.add(Dense(1024, input_shape=(X_train.shape[1],)))#choosing the number of neurons as 2/3* input shape
model.add(Activation('relu'))
model.add(Dropout(0.5))# drop out layers to avoid overfitting
model.add(Dense(1024))
model.add(Activation('relu'))
model.add(Dropout(0.5))
model.add(Dense(1024))
model.add(Activation('relu'))
model.add(Dropout(0.5))
model.add(Dense(num_labels))#number of neurons equivalent to output
model.add(Activation('softmax'))#multi class text classification

IndexError: tuple index out of range

请教如何解决这个问题，谢谢！

Answer 1

IndexError: tuple index out of range
是元组的下标越界了
X_train.shape[1]是访问元组的第2个元素
你用len()输出下 X_train.shape 长度看看是不是小于2
或者input_shape参数的元组需要2个元素
改成
input_shape=(X_train.shape[1], 1)

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