Author

Zongxi Liu

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Preprint Aug 2026

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

This work presents InSituANN, an IVF-based ANNS engine that enables billion-scale vector search on a single commodity GPU, and keeps original base vectors in host memory, performs fine search in situ, and uses the GPU for compact routing and optional pruning.

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