Preprint
Sep 2026
Fast Label-Filtering Approximate Nearest Neighbor Search via Progressive Label Set Stratification
Approximate nearest neighbor search (ANNS) retrieves the most similar vectors to a query vector in high-dimensional space. Label-filtering ANNS (LFANNS) extends ANNS with a label filter that the labels of base vectors must satisfy a set relation (e.g., equality, containment, or overlap) with the query labels. Existing...
Zi-Qi Wang, Jingzhe Zhang, Shuo Shen et al.
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