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cuishuhao / BNM

code of Towards Discriminability and Diversity: Batch Nuclear-norm Maximization under Label Insufficient Situations (CVPR2020 oral)
MIT License
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use nuclear-norm instead of F-norm #5

Closed weigq closed 4 years ago

weigq commented 4 years ago

~~Hi, @cuishuhao , thanks for the code release. I have some confusion about the details of the paper. According to the inequality (5) in original paper, the two norms can bound each other. Thus, optimizing F-norm is equal to optimizing nuclear-norm.. Thanks~~

cuishuhao commented 4 years ago

Two aspects to explain

  1. 'bound each other' does not equal to 'the bigger, the bigger', such as 1<2<4<8(1,4 as a group,28 as the other group) then it might become 1.2<1.8<4.8<7.2. One group becomes bigger, another becomes smaller.
  2. As in the paper, F-norm only denotes the discriminability, while nuclear norm denotes both the discriminability and diversity.
weigq commented 4 years ago

thanks for your quick reply.