On MovieLens-1M, request-level hard selection of recommender agents underperforms BM25, while item-level learned shortlist aggregation matches or beats it and improves further with gated LLM use.
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RouteRec: Strict Evaluation of Recommender-Agent Selection and Aggregation
On MovieLens-1M, request-level hard selection of recommender agents underperforms BM25, while item-level learned shortlist aggregation matches or beats it and improves further with gated LLM use.