Papers by Ilias Triantafyllopoulos
Knowing When Not to Answer: Lightweight KB-Aligned OOD Detection for Safe RAG (2026.acl-long)
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| Challenge: | Retrieval-Augmented Generation (RAG) systems are increasingly deployed in high-stakes domains where safety depends on how a system answers . out-of-domain (OOD) queries can impair performance and safety . |
| Approach: | They propose to use lightweight, KB-aligned OOD detection as an always-on gate for RAG systems. |
| Outcome: | The proposed method scores queries in a compact subspace selected either by explained-variance retention (EVR) or by a separability-driven -test ranking. |