Update README.md

README.md

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 # Awesome Incremental Learning / Lifelong learning
 ## Feel free to contact me if you find any interesting paper is missing.
 
-## [Awesome Long-Tailed Recognition / Imbalanced Learning] (https://github.com/xialeiliu/Awesome-LongTailed-Recognition)
+## [Awesome Long-Tailed Recognition / Imbalanced Learning](https://github.com/xialeiliu/Awesome-LongTailed-Recognition)
 #### Find it interesting that there are more shared techniques than I thought for incremental learning (exemplars-based). 
 
 ## ContinualAI wiki
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 #### [4th Lifelong Learning Workshop at ICML 2020](https://lifelongml.github.io/)
 #### [Continual Learning in Computer Vision Workshop CVPR 2020](https://sites.google.com/view/clvision2020/overview)
 
-## single-head v.s. multi-head; w exemplars or w/o exemplars
-#### Being aware of different training and test settings.
-
 ## Challenges or Competitions
 #### [Lifelong Robotic Vision Challenge IROS 2019](https://lifelong-robotic-vision.github.io)
 #### [Continual Learning in Computer Vision Challenge CVPR 2020](https://sites.google.com/view/clvision2020/challenge?authuser=0)