Xiaomin Ouyang , Xian Shuai, Jiayu Zhou, Ivy Wang Shi, Zhiyuan Xie, Guoliang Xing , and Jianwei Huang. Cosmo: Contrastive Fusion Learning with Small Data for Multimodal Human Activity Recognition In The 28th Annual International Conference on Mobile Computing and Networking (Acceptance rate: 56/317=17.7%), 2022