tensorflow tensor 索引

 

 

 

 

问题:

self.q_eval4next: (100,2)

ix=【0,1,0,1---0,1】(100,1)
我想取q_eval4next[:,idx]

 

 

 

 1         #use_doubleQ  切片用!!!!
 2         self.range_index = tf.placeholder(tf.int32,[None,],name='range_index')
 3 
 4         if self.use_doubleQ:
 5 
 6             f = tf.map_fn(lambda x: x, self.range_index) # or perhaps something more useful than identity
 7             ix = tf.to_int32(tf.expand_dims(tf.argmax(self.q_eval4next,axis=1),-1))
 8             tmp=tf.to_int32(tf.expand_dims(f,-1))
 9             index_a = tf.concat([tmp,ix,],axis=1)
10             maxq =  tf.gather_nd(self.q_next,index_a)

 https://www.programcreek.com/python/example/90420/tensorflow.map_fn

https://stackoverflow.com/questions/34987509/tensorflow-max-of-a-tensor-along-an-axis

https://zhuanlan.zhihu.com/p/39295071

https://zhuanlan.zhihu.com/p/45673869

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转载自www.cnblogs.com/zle1992/p/10269187.html
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