Author

Zongxi Liu

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Preprint Aug 2026

InSituANN: Revisiting IVF for PCIe-Efficient Billion-Scale Vector Search

Approximate nearest neighbor search (ANNS) over billion-scale vector datasets has become a foundational operator for modern retrieval systems, powering large-scale recommendation, semantic search, and LLM/RAG workloads. Although GPUs offer massive parallelism and high-bandwidth memory for batched vector search, their l...

Yue-Meng Xu, Zongxi Liu, Junyu Long et al. · 0 citations

Preprint Aug 2026

Once Poisoned, Arbitrarily Controlled: A Programmable Backdoor in VLMs

This work shows that a single poisoning phase can implant a programmable backdoor into a VLM, allowing an attacker to choose previously unseen target-caption semantics at inference time and synthesize corresponding stealthy triggers on demand.

Tao Lin, Gao-Jie Jin, Zongxi Liu et al. · 0 citations