Researchers have developed a new graph-based approximate nearest neighbor (ANN) system for learned sparse retrieval (LSR) called GRIP. This system challenges the prevailing notion that inverted indexes are superior to graph-based indexes for LSR. GRIP incorporates techniques such as term-based entry point seeding, approximate routing via sparse sketching, and sparse partition-based graph construction to enhance performance. On the MS MARCO v2 benchmark, GRIP demonstrated a 2.5x latency improvement over Seismic, a leading inverted index for LSR, while maintaining 95% recall@10. AI
IMPACT This research could shift the standard approach for deploying learned sparse retrieval systems, potentially leading to more efficient search technologies.
RANK_REASON The cluster contains a research paper detailing a new system and benchmark results. [lever_c_demoted from research: ic=1 ai=1.0]
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