Authors

Songyuan Sui

Publications 2

Preprint Open access

Do More Modalities Always Help? A Geometric Perspective on Missing-Modality Robustness

Songyuan Sui, Zhen Tan, Mohan Zhang et al. · 2026

Missing modality remains a longstanding challenge in multimodal learning. Existing methods typically address this issue through modality recovery or adaptive strategies. However, they overlook models' internal cross-modal dependencies formed during multimodal training, which later impair robustness. We systematically c …

Preprint Open access

Does Every User Need a Private LoRA? Decoupling Personalization from Per-User Adaptation

Songyuan Sui, Srikanth Malla, Chiho Choi et al. · 2026

Personalized large language models often require a complete adaptation state for each user. However, this paradigm scales poorly as the user population grows. We revisit this design through the lens of personalization capacity allocation: how much adaptation capacity can be shared across users, how the shared capacity …

Co-authors