我在神经网络中输入多个数据源时遇到了问题。我的数据框是：

                           0  1  2                   3   4  0        [True, True, False]  3 -1  [False, True, True]  1

输入与前四列相关，输出是最后一列。当我训练我的神经网络时，我得到了Setting an array element with a sequence.

def network():        model = Sequential()        model.add(Dense(output_dim=50, activation='relu', input_dim=4))        model.add(Dense(output_dim=50, activation='relu'))        model.add(Dense(output_dim=50, activation='relu'))        model.add(Dense(output_dim=1, activation='softmax'))        opt = RMSprop(lr=0.00025)        model.compile(loss='mse', optimizer=opt)        return model    data = pd.DataFrame()    state = [0]*3    for i in range(3):        state[i]= random.choice([True, False])    move = random.randint(1,4)    reward = random.choice([-1, -10, 10])    future_state = [0]*3    for i in range(3):        future_state[i] = random.choice([True, False])    Q = 1    array = [state, move, reward, future_state, Q]    data = data.append([array])    training = data.drop([4], axis = 1)    target = data[4]    model = network()    model.fit(training,target,epochs=2)

Python 错误跟踪：

Traceback (most recent call last):  File "D:/Documents/PycharmProjects/SnakeGA/try.py", line 33, in <module>    model.fit(training,target,epochs=2)  File "D:\Anaconda3\lib\site-packages\keras\models.py", line 845, in fit    initial_epoch=initial_epoch)  File "D:\Anaconda3\lib\site-packages\keras\engine\training.py", line 1485, in fit    initial_epoch=initial_epoch)  File "D:\Anaconda3\lib\site-packages\keras\engine\training.py", line 1140, in _fit_loop    outs = f(ins_batch)  File "D:\Anaconda3\lib\site-packages\keras\backend\tensorflow_backend.py", line 2075, in __call__    feed_dict=feed_dict)  File "D:\Anaconda3\lib\site-packages\tensorflow\python\client\session.py", line 900, in run    run_metadata_ptr)  File "D:\Anaconda3\lib\site-packages\tensorflow\python\client\session.py", line 1104, in _run    np_val = np.asarray(subfeed_val, dtype=subfeed_dtype)  File "D:\Anaconda3\lib\site-packages\numpy\core\numeric.py", line 492, in asarray    return array(a, dtype, copy=False, order=order)ValueError: setting an array element with a sequence.

这是因为我在某些列中使用了数组，而在其他列中使用了整数吗？我以为Keras可以处理这种情况，但也许我错了。我不清楚如何处理来自多个来源的拼接数据。谢谢！

回答：

在插入之前，需要将numpy数组中的列表展平。

array 在原始实现中是 [[False, False, True], 4, -10, [False, True, False], 1]，

应该展平为 [False, False, True, 4, -10, False, True, False, 1]。

这里 有一个演示此操作的jupyter笔记本工作示例。