tf.gather

tf.gather:用一个一维的索引数组,将张量中对应索引的向量提取出来

import tensorflow as tf 
 
a = tf.Variable([[1,2,3,4,5], [6,7,8,9,10], [11,12,13,14,15]])
index_a = tf.Variable([0,2])
 
b = tf.Variable([1,2,3,4,5,6,7,8,9,10])
index_b = tf.Variable([2,4,6,8])
 
with tf.Session() as sess:
    sess.run(tf.global_variables_initializer())
    print(sess.run(tf.gather(a, index_a)))
    print(sess.run(tf.gather(b, index_b)))
 
#  [[ 1  2  3  4  5]
#   [11 12 13 14 15]]
 
#  [3 5 7 9]

 

参考博客:

https://www.cnblogs.com/estragon/p/9809154.html

posted @ 2019-12-05 12:11  xd_xumaomao  阅读(77)  评论(0编辑  收藏  举报