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#natural language process... Preprint Sep 2026

Beyond Magnitude: Contrastive Routing for Modular Mixture-of-Experts

The Contrastive Routing Mechanism (CoRM) is proposed, which scores each expert by the gap between its affinity for the incoming token and its affinity for this shared reference state, interpreted through a distinct per-expert projection.

N. Xiros, Dimitrios Damianos, Maria-Eleni Zoumpoulidi et al. · 0 citations
#natural language process... Preprint Aug 2026

More Capable, Less Faithful: A Multilingual Analysis of Mathematical (Un)Solvability Detection in LLMs

The first multilingual benchmark of paired solvable and unsolvable mathematical problems, extending ReliableMath to French and Greek, finds that Solvability Belief is encoded as a largely universal, language-agnostic feature, and that higher-resource languages, despite achieving stronger mathematical reasoning performance, exhibit lower solvability-detection faithfulness.

Maria-Eleni Zoumpoulidi, N. Xiros, Georgios Paraskevopoulos · 0 citations

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