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Adaptive-RAG: Learning to Adapt Retrieval-Augmented Large Language Models through Question Complexity

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arxiv 2403.14403 v2 pith:CT5EGUKV submitted 2024-03-21 cs.CL cs.AI

Adaptive-RAG: Learning to Adapt Retrieval-Augmented Large Language Models through Question Complexity

classification cs.CL cs.AI
keywords llmsqueriesretrieval-augmentedcomplexitiescomplexitymodelsqueryaccuracy
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Retrieval-Augmented Large Language Models (LLMs), which incorporate the non-parametric knowledge from external knowledge bases into LLMs, have emerged as a promising approach to enhancing response accuracy in several tasks, such as Question-Answering (QA). However, even though there are various approaches dealing with queries of different complexities, they either handle simple queries with unnecessary computational overhead or fail to adequately address complex multi-step queries; yet, not all user requests fall into only one of the simple or complex categories. In this work, we propose a novel adaptive QA framework, that can dynamically select the most suitable strategy for (retrieval-augmented) LLMs from the simplest to the most sophisticated ones based on the query complexity. Also, this selection process is operationalized with a classifier, which is a smaller LM trained to predict the complexity level of incoming queries with automatically collected labels, obtained from actual predicted outcomes of models and inherent inductive biases in datasets. This approach offers a balanced strategy, seamlessly adapting between the iterative and single-step retrieval-augmented LLMs, as well as the no-retrieval methods, in response to a range of query complexities. We validate our model on a set of open-domain QA datasets, covering multiple query complexities, and show that ours enhances the overall efficiency and accuracy of QA systems, compared to relevant baselines including the adaptive retrieval approaches. Code is available at: https://github.com/starsuzi/Adaptive-RAG.

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Cited by 34 Pith papers

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

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    A generator-specific knowledge boundary is discoverable by co-training: DPO teaches what can be internalized, then rejection finetuning calibrates search to only what remains external.

  2. AdaGATE: Adaptive Gap-Aware Token-Efficient Evidence Assembly for Multi-Hop Retrieval-Augmented Generation

    cs.CL 2026-05 unverdicted novelty 7.0

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  3. Chain of Evidence: Pixel-Level Visual Attribution for Iterative Retrieval-Augmented Generation

    cs.CV 2026-05 unverdicted novelty 7.0

    Chain of Evidence introduces a retriever-agnostic visual attribution method for iRAG that reasons over document screenshots with VLMs to output precise bounding boxes, outperforming text baselines on Wiki-CoE and SlideVQA.

  4. Do We Still Need GraphRAG? Benchmarking RAG and GraphRAG for Agentic Search Systems

    cs.IR 2026-04 unverdicted novelty 7.0

    Agentic search narrows the gap between dense RAG and GraphRAG but does not remove GraphRAG's advantage on complex multi-hop reasoning.

  5. Search Beyond What Can Be Taught: Evolving the Knowledge Boundary in Agentic Visual Generation

    cs.CV 2026-07 conditional novelty 6.0

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  6. Search Beyond What Can Be Taught: Evolving the Knowledge Boundary in Agentic Visual Generation

    cs.CV 2026-07 conditional novelty 6.0

    Selective search plus generator-reasoner co-training improves knowledge-grounded image generation, but the reported gains are scored by the same VLM judge used to train the system.

  7. Inference Cost Attacks for Retrieval-Augmented Large Language Models

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    Poisoning external knowledge bases with LLM-agent-crafted documents can increase RAG inference token consumption by up to 13.12 times at over 90% success rate while preserving answer quality.

  8. Verifier-First Evaluation of Agentic LLMs for Infrastructure-as-Code Generation

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  9. Natural Language Query to Configuration for Retrieval Agents

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  10. An Agent-Oriented Pluggable Experience-RAG Skill for Experience-Driven Retrieval Strategy Orchestration

    cs.AI 2026-05 unverdicted novelty 6.0

    Experience-RAG Skill uses experience memory to dynamically select retrieval strategies for agents, achieving 0.8924 nDCG@10 on BeIR/nq, hotpotqa, and scifact while outperforming fixed single-retriever baselines.

  11. Chain of Evidence: Pixel-Level Visual Attribution for Iterative Retrieval-Augmented Generation

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  12. LLMs Should Express Uncertainty Explicitly

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  13. LLMs Should Express Uncertainty Explicitly

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  14. Optimizing RAG Rerankers with LLM Feedback via Reinforcement Learning

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  15. Memory in the LLM Era: Modular Architectures and Strategies in a Unified Framework

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  16. ZeroSearch: Incentivize the Search Capability of LLMs without Searching

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  17. ZeroSearch: Incentivize the Search Capability of LLMs without Searching

    cs.CL 2025-05 unverdicted novelty 6.0

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  18. In-depth Analysis of Graph-based RAG in a Unified Framework

    cs.IR 2025-03 unverdicted novelty 6.0

    A unified framework and large-scale comparison of graph-based RAG methods on QA tasks yields new high-performing variants obtained by recombining existing components.

  19. ArchRAG: Attributed Community-based Hierarchical Retrieval-Augmented Generation

    cs.IR 2025-02 unverdicted novelty 6.0

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  20. Drift-Aware Temporal Graph Rewiring (DATGR) for Adaptive Semantic Modeling in Biomedical Text

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  21. Adaptive Re-Ranking

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    Adaptive Re-Ranking trains a classifier to route queries to BM25, MiniLM-L6-v2, or BGE-v2-m3 based on a utility label, yielding 1.15-53x lower median latency and competitive nDCG@10 versus always using the heaviest model.

  22. Strategic Decision Support for AI Agents

    cs.AI 2026-06 unverdicted novelty 5.0

    The paper introduces an optimization framework for AI agents to strategically seek support, proving a threshold policy on support value and providing an online algorithm to control missed-support error without distrib...

  23. Rethinking the Necessity of Adaptive Retrieval-Augmented Generation through the Lens of Adaptive Listwise Ranking

    cs.IR 2026-04 unverdicted novelty 5.0

    AdaRankLLM shows adaptive listwise reranking outperforms fixed-depth retrieval for most LLMs by acting as a noise filter for weak models and an efficiency optimizer for strong ones, with lower context use.

  24. Multimodal Large Language Model-Enabled Video Translation: A Role-Oriented Survey

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  25. Tug-of-War within A Decade: Conflict Resolution in Vulnerability Analysis via Teacher-Guided Retrieval-Augmented Generations

    cs.CL 2026-03 unverdicted novelty 5.0

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  26. RELOOP: Recursive Retrieval with Multi-Hop Reasoner and Planners for Heterogeneous QA

    cs.CL 2025-10 unverdicted novelty 5.0

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  27. Retrieval-Augmented Generation with Graphs (GraphRAG)

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  30. GuidedRAG: Semantic Steering of Retrieval-Augmented Generation

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  31. R$^2$-Searcher: Calibrating Retrieval and Reasoning Boundaries for Agentic Search

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  32. An Agent-Oriented Pluggable Experience-RAG Skill for Experience-Driven Retrieval Strategy Orchestration

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  34. A Reproducibility Study of Metacognitive Retrieval-Augmented Generation

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    MetaRAG is only partially reproducible with lower absolute scores than originally reported, gains substantially from reranking, and shows greater robustness than SIM-RAG under extended retrieval features.