Researchers have conducted an ablation study on agentic retrieval-augmented generation (RAG) systems, specifically focusing on multi-hop question answering with a local 7B parameter model, Qwen2.5-7B-Instruct. The study found that a fixed hybrid retrieval method using reciprocal rank fusion outperformed adaptive routing, and that two retrieval iterations captured most of the performance gains, with diminishing returns from deeper loops. Query decomposition and cross-encoder reranking also provided significant, though smaller, improvements. AI
IMPACT Suggests simpler, fixed retrieval methods can be competitive with adaptive routing in resource-constrained agentic RAG systems.
RANK_REASON Academic paper detailing an ablation study on RAG systems. [lever_c_demoted from research: ic=1 ai=1.0]
Read on arXiv cs.IR (Information Retrieval) →
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