Rank fusion (RRF) reaches the highest relevance (nDCG@10 = 0.828) on expert COVID-19 queries while a projection fusion variant (B5) is 33% faster and produces more diverse results.
SPLADE: Sparse Lex- ical and Expansion Model for First Stage Ranking,
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Hybrid Retrieval for COVID-19 Literature: Comparing Rank Fusion and Projection Fusion with Diversity Reranking
Rank fusion (RRF) reaches the highest relevance (nDCG@10 = 0.828) on expert COVID-19 queries while a projection fusion variant (B5) is 33% faster and produces more diverse results.