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Zhongkui Ma

University of Queensland

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#artificial intelligence Preprint Sep 2026

Shadow Queries for Private Retrieval in Vector Databases

SHAQ (shadow query generation), a semantic-decomposition and embedding-decoupling defense against EIAs, is proposed, which uses a generative language model to create diverse shadow queries that capture different semantic aspects of each document.

Xinguo Feng, Zhongkui Ma, Zi-Han Wang et al. · 0 citations