Author

Sean MacAvaney

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Preprint Aug 2026

Robustness of IR Models to Collection Growth

This study empirically evaluates the robustness of an IR model to the addition of non-relevant documents by merging two collections with negligible topic overlap and finds that MDA is more effective than MDD for retrieval, whereas MDD and MDA rerankers are equally effective.

Emmanouil Georgios Lionis, Sean MacAvaney, Debasis Ganguly · 0 citations