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KaihuaTang / Long-Tailed-Recognition.pytorch

[NeurIPS 2020] This project provides a strong single-stage baseline for Long-Tailed Classification, Detection, and Instance Segmentation (LVIS). It is also a PyTorch implementation of the NeurIPS 2020 paper 'Long-Tailed Classification by Keeping the Good and Removing the Bad Momentum Causal Effect'.
GNU General Public License v3.0
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关于multi_head classifier #11

Open Vickeyhw opened 4 years ago

Vickeyhw commented 4 years ago

请问用多头分类器的动机是什么？从实验结果看，它确实有效，是因为多头分类器引入了投票集成的思想吗？

KaihuaTang commented 4 years ago

因为我们用采样的思想取近似P(M)所以multi-head可以理解为sample了K个特征空间。不过提升也不全靠这个，看补充实验，K=1，也就是没multi-head提升也很大。