Rank4Gen: RAG-Preference-Aligned Document Set Selection and Ranking. - Yongqi Fan; Yuxiang Chu; Zhentao Xia; Xiaoyang Chen 001; Jie Liu 075; Haijin Liang; Jin Ma 003; Ben He 001; Yingfei Sun; Dezhi Ye; Tong Ruan (CoRR, 2026)

PsychēChat: An Empathic Framework Focused on Emotion Shift Tracking and Safety Risk Analysis in Psychological Counseling. - Zhentao Xia; Yongqi Fan; Yuxiang Chu; Yichao Yin; Liangliang Chen; Tong Ruan; Weiyan Zhang (CoRR, 2026)