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Multi-Hop Reasoning Accuracy and Latency Trade-offs in RAG Systems with MA-DPR and Lexical Retrieval

Assignee Research

Zenodo (CERN European Organization for Nuclear Research), 2026

Abstract

This report synthesises findings from 13 peer-reviewed papers addressing the following research question: How does the integration of MA-DPR versus lexical methods impact the reasoning accuracy and latency trade-offs in RAG systems when evaluated on complex multi-hop question-answering benchmarks like. Large Language Models (LLMs) showcase impressive capabilities but encounter challenges like hallucination, outdated knowledge, and non-transparent, untraceable reasoning processes. Retrieval-Augmented Generation (RAG) has emerged as a promising solution by incorporating. 9 claims were extracted from source literature; 9 were independently verified against retrieved documents. An automated multi-reviewer quality assessment produced a score of 8.8/10. This report is a machine-generated literature synthesis and does not constitute original research. Research goal: How does the integration of MA-DPR versus lexical methods impact the reasoning accuracy and latency trade-offs in RAG systems when evaluated on complex multi-hop question-answering benchmarks like HotpotQA? Autonomous literature synthesis. Automated review score: 8.8/10. Full text and citation available at Assignee Research.

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