CORTEXA
← Browse

Jiexi Liu

2 papers indexed

arxivcs.CVq-bio.NC2026-07-31

Multi-Source Multi-View Graph Domain Adaptation with Hyperbolic Residual Encoding for Cross-Site MDD Identification from rs-fMRI

Zhanpeng Zheng, Xiran Chen, Haiteng Jiang, Renjie Tian, Qinyu Cai, Jiexi Liu, et al.

Cross-site identification of major depressive disorder (MDD) from resting-state functional magnetic resonance imaging (rs-fMRI) is hindered by inter-site distribution shifts and heterogeneous functional connectivity (FC) views. These views capture complementary neural relationshi…

View free PDFSource page
arxivcs.AI2026-07-03

Oyster-II: Reinforcement Learning for Constructive Safety Alignment in Large Language Models

Jiyang Guan, Yong Xie, Jun Chen, Jiexi Liu, Zipeng Ye, Defeng Li, et al.

Large language models (LLMs) have demonstrated remarkable capabilities across diverse applications, yet ensuring their simultaneous safety, helpfulness, and trustworthiness remains a persistent challenge. Conventional refusal-oriented alignment strategies mitigate harmful content…

View free PDFSource page