def create_LSTM_model(): # instantiate the model model = Sequential() model.add(Input(shape=(X_train.shape[1], X_train.shape[2]))) X_train = X_train.reshape((X_train.shape[0], n_steps, 1, n_length, n_features)) # cnn1d Layers model.add(ConvLSTM2D(filters=64, kernel_size=(1,3), activation='relu', input_shape=(n_steps, 1, n_length, n_features))) model.add(Flatten()) model.add(RepeatVector(n_outputs)) model.add(MaxPooling1D()) # 添加lstm层 model.add(LSTM(64, activation = 'relu', return_sequences=True)) model.add(Dropout(0.5)) #添加注意力层 model.add(LSTM(64, activation = 'relu', return_sequences=False)) # 添加dropout model.add(Dropout(0.5)) model.add(Dense(128)) # 输出层 model.add(Dense(1, name='Output')) # 编译模型 model.compile(optimizer='adam', loss='mse', metrics=['mae']) return model # lstm network model = create_LSTM_model() # summary print(model.summary())修改该代码，解决UnboundLocalError: local variable 'X_train' referenced before assignment问题

在函数中，我们应该在使用变量 `X_train` 之前先对其进行赋值。因此，我们需要将 `X_train = X_train.reshape((X_train.shape[0], n_steps, 1, n_length, n_features))` 这一行代码的位置提前，放在 `model.add(Input(shape=(X_train.shape[1], X_train.shape[2])))` 的前面即可解决问题。修改后的代码如下：

def create_LSTM_model():
    # instantiate the model
    model = Sequential()
    X_train = X_train.reshape((X_train.shape[0], n_steps, 1, n_length, n_features))
    model.add(Input(shape=(X_train.shape[1], X_train.shape[2])))

    # cnn1d Layers
    model.add(ConvLSTM2D(filters=64, kernel_size=(1,3), activation='relu', 
                         input_shape=(n_steps, 1, n_length, n_features)))
    model.add(Flatten())
    model.add(RepeatVector(n_outputs))
    model.add(MaxPooling1D())

    # 添加lstm层
    model.add(LSTM(64, activation='relu', return_sequences=True))
    model.add(Dropout(0.5))
    
    #添加注意力层
    model.add(LSTM(64, activation='relu', return_sequences=False))

    # 添加dropout
    model.add(Dropout(0.5))
    model.add(Dense(128))

    # 输出层
    model.add(Dense(1, name='Output'))

    # 编译模型
    model.compile(optimizer='adam', loss='mse', metrics=['mae'])

    return model

# lstm network
model = create_LSTM_model()

# summary
print(model.summary())