Author

Michael Benigni

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#machine learning Preprint Oct 2026

Variance-Optimal Off-Policy Evaluation with Conjunct Effect Modeling

Off-policy evaluation (OPE) for contextual bandit policies becomes challenging when action-level importance weighting incurs excessive variance. Doubly robust (DR) estimation remains unbiased under common support but retains these high-variance action-level weights. A prior estimator, Off-policy evaluation with Conjunc...

Nicolò Felicioni, Michael Benigni, Maurizio Ferrari Dacrema et al. · 0 citations

#large language models Book Open access Oct 2026

Talk Less, Rank Better: A Decoupled Pipeline for Conversational Music Recommendation

This paper describes the solution submitted by team Hallucinated to the ACM RecSys Challenge 2026, based on the TalkPlayData conversational music recommendation dataset, which addresses the ranking task with a classic multi-stage pipeline that combines a diverse pool of candidate generators, Reciprocal Rank Fusion, and...

Abdallah Alkhetiar, Luigi Inguaggiato, Nicolò Locatelli et al. · Proceedings of the Workshop... · 1 citation