问题说明
利用梯度带计算梯度时发现有些层的梯度返回None。
解决方法
将正向传播中所有的操作都用tensorflow中的API执行，不能使用numpy等其他库中的API，比如np.concatenate需要被换成tf.concat。
详细解决方案
Tensorflow2.0 求梯度返回None（WARNING:tensorflow:Gradients do not exist for variables）
热度：31 发布时间：2023-10-28 13:04:27.0
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