tensorflow 2.0.0 中 tf.one_hot 的等价物是什么

Question

 train_label = tf.keras.backend.one_hot(train_label,3)
 train_label = tf.one_hot(train_label,3)

在 tensorflow 2.0.0 中给出以下错误

InternalError: Could not find valid device for node.

节点：{{node OneHot}}

Answer 1

train_label应该是一个INT类型的数据。 例如：

train_label = [1, 2 ,3]
train_label = tf.one_hot(train_label,3) // work

train_label = [1., 2., 3.]
train_label = tf.one_hot(train_label,3) // InternalError: Could not find valid device for node.