激活函数-dropout

import tensorflow as tfa = tf.constant([[-1.0, 2.0, 3.0, 4.0]])with tf.Session() as sess:    b = tf.nn.dropout(a, 0.5, noise_shape = [1,4])    print sess.run(b)    b = tf.nn.dropout(a, 0.5, noise_shape = [1,1])    print sess.run(b)

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