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RankRAG: Unifying Context Ranking with Retrieval-Augmented Generation in LLMs

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arxiv 2407.02485 v1 pith:OHF4FMDV submitted 2024-07-02 cs.CL cs.AIcs.IRcs.LG

RankRAG: Unifying Context Ranking with Retrieval-Augmented Generation in LLMs

classification cs.CL cs.AIcs.IRcs.LG
keywords rankinggenerationbenchmarksdatallmsmodelsbiomedicalcontext
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Large language models (LLMs) typically utilize the top-k contexts from a retriever in retrieval-augmented generation (RAG). In this work, we propose a novel instruction fine-tuning framework RankRAG, which instruction-tunes a single LLM for the dual purpose of context ranking and answer generation in RAG. In particular, the instruction-tuned LLMs work surprisingly well by adding a small fraction of ranking data into the training blend, and outperform existing expert ranking models, including the same LLM exclusively fine-tuned on a large amount of ranking data. For generation, we compare our model with many strong baselines, including GPT-4-0613, GPT-4-turbo-2024-0409, and ChatQA-1.5, an open-sourced model with the state-of-the-art performance on RAG benchmarks. Specifically, our Llama3-RankRAG significantly outperforms Llama3-ChatQA-1.5 and GPT-4 models on nine knowledge-intensive benchmarks. In addition, it also performs comparably to GPT-4 on five RAG benchmarks in the biomedical domain without instruction fine-tuning on biomedical data, demonstrating its superb capability for generalization to new domains.

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Forward citations

Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. TrustMargin: Training-Free Arbitration between Parametric Memory and Retrieved Evidence in Large Language Models

    cs.CL 2026-06 conditional novelty 7.0

    TrustMargin arbitrates between direct and RAG answers from a frozen LLM by combining a parametric-prior margin and an evidence-binding margin computed from model likelihoods, improving results on 2WikiMQA and CWQA.

  2. MemFlow: Intent-Driven Memory Orchestration for Small Language Model Agents

    cs.MA 2026-05 unverdicted novelty 7.0

    MemFlow routes queries by intent to tiered memory operations, nearly doubling accuracy of a 1.7B SLM on long-horizon benchmarks compared to full-context baselines.

  3. From 3D Perception to Safety Reasoning: A Graph-Based Framework for Real-Time Underground Mine Monitoring

    cs.CV 2026-06 unverdicted novelty 5.0

    A graph-structured framework fuses 3D perception with rule-based, LLM, and memory reasoning to raise hazard coverage from 57% to 93% across 115 simulated underground mine scenarios.

  4. Self-Describing Structured Data with Dual-Layer Guidance: A Lightweight Alternative to RAG for Precision Retrieval in Large-Scale LLM Knowledge Navigation

    cs.CL 2026-03 unverdicted novelty 5.0

    SDSR places human metadata at file primacy and combines it with prompt routing rules to reach 100% primary category accuracy on a 119-category benchmark, far above the 65% no-guidance baseline.

  5. Reducing Redundancy in Retrieval-Augmented Generation through Chunk Filtering

    cs.CL 2026-04 unverdicted novelty 4.0

    Entity-based chunk filtering reduces RAG vector index size by 25-36% with retrieval quality near baseline levels.

  6. LightRAG: Simple and Fast Retrieval-Augmented Generation

    cs.IR 2024-10 unverdicted novelty 4.0

    LightRAG builds graph structures into RAG indexing and retrieval with dual-level search and incremental updates to improve accuracy and speed.