@ARTICLE{11345156,
  author={Liu, Hongda and Liu, Yunfan and Ren, Min and Sui, Lin and Wang, Yunlong and Sun, Zhenan},
  journal={IEEE Transactions on Biometrics, Behavior, and Identity Science}, 
  title={Affinity Contrastive Learning for Skeleton-Based Human Activity Understanding}, 
  year={2026},
  volume={8},
  number={2},
  pages={244-254},
  keywords={Contrastive learning;Skeleton;Biometrics;Semantics;Temperature measurement;Gait recognition;Feature extraction;Graph convolutional networks;Human activity recognition;Human activity understanding;skeleton;graph convolutional networks;contrastive learning},
  doi={10.1109/TBIOM.2026.3652637}}