Yi Tian Xu

Projects

Pattern completion

This project relates to the work I did in my master thesis at McGill University. We can look at certain learning problems as associating the partial input signal pattern to the larger (or complete) signal pattern learned by the agent. In this view, we can not only retrieve the best output to the task in question but also other information related to the input signal.

Visit here for a more complete idea of pattern completion.

So far, this idea has been tested on Human3.6M dataset in this paper and supplimentary results, and on MNIST dataset in this repo.

Respiration sensing using WiFi

WiFi signal reflected off a static human chest has a periodic pattern that is correlated with the respiration rate. With sophisticated signal processing tools and data-driven classification, we can push the sensing accuracy in a noisy environment to a higher level. This project is done at Samsung AI Center, and can be viewed in this paper.

Demo

• Kinova robot arm cutting a cake: this was to make a suprise video for a professor during my master studies. The underlying algorithm was simply to replay a recorded trajectory. I chose a spatula as the cutting tool for safety. Here is a blooper played at 10x the actual speed.

Sample Artworks

• Drawings: 1 2 3 4 5 6
• Experimental music
• Poems

Publications

Conference papers

• Jikun Kang, Xi Chen, Di Wu, Yi Tian Xu, Xue Liu, Gregory Dudek, Taeseop Lee, and Intaik Park, "Hierarchical Policy Learning for Hybrid Communication Load Balancing", ICC 2021 (Proceedings of IEEE 2021 International Conference on Communications).
• Yi Tian Xu, Xi Chen , Xue Liu, David Meger, Gregory Dudek, "PresSense: Passive Respiration Sensing via Ambient WiFi Signals in Noisy Environments", IROS 2020 (Proceedings of 2020 IEEE/RSJ International Conference on Intelligent Robots and Systems). [paper]
• Yi Tian Xu, Yaqiao Li, David Meger, "Human motion prediction via pattern completion in latent representation space", CRV 2019 (16th conference on Computer and Robot Vision).[paper]
• David Jurgens, Tyler Finethy, James McCorriston, Yi Tian Xu, Derek Ruths, "Geolocation Prediction in Twitter Using Social Networks: A Critical Analysis and Review of Current Practice", ICWSM 2015 (Proceedings of the 9th International AAAI Conference on Web and Social Media). [project link][paper]