03 基础张量操作_3

一：统计属性

statistics

▪ norm
▪ mean、sum
▪ prod
▪ max、min、argmin、argmax
▪ kthvalue、topk

1、norm

v.s. normalize ,e.g. batch_norm
▪ matrix norm v.s. vector norm

2、Vector vs matrix

3、norm-p

4、mean、sum、min、max、prod

5、argmin, argmax

6、dim、keepdim

7、Top-k or k-th

▪ .topk
  ▪ Largest
▪ kthvalue

8、compare

▪>, >=, <, <=, !=, ==

▪torch.eq(a, b)
▪torch.equal(a, b)

二：高阶OP

Tensor advanced operation

▪ Where
▪ Gather

1、where

example

2、gather

retrieve global label

  ▪ argmax（pred） to get relative labeling

  ▪ On some condition, our label is dinstinct from relative labeling

retrieve label