Author

L. Zhang

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Jul 2026

BM25 Wins at Scale: A Scaling Study of Retrieval-Augmented Generation Paradigms

Overall, corpus growth increasingly favors global candidate ranking: lexical retrieval is the strongest scalable default, while agentic reasoning works best after ranked discovery rather than in place of it.

Pengyu Wang, Benfeng Xu, Shaohan Wang et al. · arXiv.org · 1 citation

Preprint Aug 2026

When Your Agent Opens the Chat App: Agent-Controlled Search over Raw Chat Logs Rivals Structured Memory

The results indicate that for precise, evidence-grounded questions over chat archives, much of the benefit credited to elaborate memory structures is recoverable by giving an agent controllable search over the unmodified record, with no LLM-based index construction at all.

Ruizhe Li, L. Zhang, Benfeng Xu et al. · 1 citation