Authors

Haocheng Xi

Publications 2

Preprint Open access

MosaiChunk: Compositing Spatio-Temporal Memory for Autoregressive Video Generation

Yiwen Zhang, Haocheng Xi, Michael Tian-Yue Liu et al. · 2026

Long-horizon autoregressive video generation is limited by a finite context window. When an object or scene falls out of context, its fine-grained visual details may be lost and difficult to recover upon reappearance. To retain access to such visual details, we introduce MosaiChunk, a spatio-temporal memory mechanism t …

Preprint Open access

LeapQuant: Efficient Linear Attention with Accurate Recurrent State Quantization

Yi Pan, Haocheng Xi, Kan Zhu et al. · 2026

Recent LLMs increasingly adopt hybrid designs that replace standard attention with linear attention, such as Gated DeltaNet (GDN) and Kimi Delta Attention (KDA). Although they compress the context into a fixed-size recurrent state and substantially reduce the cost of long-context processing, repeatedly reading and upda …

Co-authors

Yi Pan Kan Zhu Xingyang Li Yibo Wu Mayank Mishra Hongtao Zhang William X. Zheng Baris Kasikci Song Han Kurt Keutzer Rishabh Iyer Ion Stoica