AMBER: Adaptive Meta Balanced Paradigm for Heterogeneous Graph-Based Knowledge Tracing. - Lifan Sun; Zichen Yuan; Ersheng Ni; Weihua Cheng; Xinyuan Song 002; Linkun Dai; Hongwei Jiang; Sibo Xu; Mengmeng Chen; Yucen Zhuang; Yongxin Ni; Youhua Li (CIKM, 2025)