IEKG: A Commonsense Knowledge Graph for Idiomatic Expressions. - Ziheng Zeng; Kellen Tan Cheng; Srihari Venkat Nanniyur; Jianing Zhou; Suma Bhat (EMNLP, 2023)

Backprompting: Leveraging Synthetic Production Data for Health Advice Guardrails. - Kellen Tan Cheng; Anna Lisa Gentile; Chad DeLuca; Guang-Jie Ren (CoRR, 2025)