Hongyi Wen was an Information Science PhD student at Cornell Tech working with Prof. Deborah Estrin. His research focused on user-centric recommendation systems that incorporate effective and sustainable user-control mechanisms. He was interested in developing socially-responsible personalization systems towards diverse, fair and privacy-aware. As a DLI fellow, Hongyi studied how implicit or explicit manipulations on recommendation outcomes can be mitigated by improving algorithmic and user-facing system designs.