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Sagan

Paper

When Global Gating Is Enough: Admission-Time Hubness Control in Anisotropic Vector Retrieval Systems

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AI summary

arXiv:2606. 19692v1 Announce Type: new Abstract: Vector hubness, where a few points become nearest neighbors of many queries, creates a poisoning risk in retrieval-augmented generation (RAG): one injected document can influence unrelated requests.