Challenge: Existing LLMs require substantial computational resources and are prone to generating hallucinated or unreliable content.
Approach: They propose an expert-oriented Retrieval-Augmented Generation framework which leverages user modeling to identify archived questions with answers that fully or partially address the user’s new query.
Outcome: The proposed framework synthesizes expert-written answers from similar questions to generate unified answers.

Similar Papers

Question Decomposition for Retrieval-Augmented Generation (2025.acl-srw)

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Challenge: Retrieval-augmented generation (RAG) is effective for question answering tasks . multi-hop questions, such as "Which company among NVIDIA, Apple, and Google made the biggest profit in 2023?" challenge RAG because relevant facts are often distributed across multiple documents .
Approach: They propose a pipeline that incorporates question decomposition to ground large language models in verifiable external sources.
Outcome: The proposed approach improves retrieval and answer accuracy over standard RAG . multi-hop questions often require multiple documents to support the model .
Open-RAG: Enhanced Retrieval Augmented Reasoning with Open-Source Large Language Models (2024.findings-emnlp)

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Challenge: Existing methods to integrate Large Language Models with external knowledge suffer from limited reasoning capabilities, especially when using open-source LLMs.
Approach: They propose a framework that transforms an arbitrary dense LLM into a parameter-efficient sparse mixture of experts (MoE) model capable of handling complex reasoning tasks.
Outcome: The proposed framework transforms an arbitrary dense LLM into a parameter-efficient sparse mixture of experts (MoE) model capable of handling complex reasoning tasks, including both single- and multi-hop queries.
Is Agentic RAG worth it? An experimental comparison of RAG approaches (2026.acl-industry)

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Challenge: Retrieval-Augmented Generation (RAG) systems have several limitations, including noisy or suboptimal retrieval, misuse of retrieval for out-of-scope queries, weak query–document matching, and variability or cost associated with the generator.
Approach: They propose to use a "Enhanced" RAG to address weaknesses in the workflow . they propose to orchestrate the entire process, deciding which actions to perform, when to perform them, and whether to iterate .
Outcome: The proposed models address shortcomings in the RAG workflow, and provide practical insights into the trade-offs between them.
A Survey of RAG-Reasoning Systems in Large Language Models (2025.findings-emnlp)

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Challenge: a survey of RAG-based reasoning-based approaches shows that it is not effective for multi-step inferences.
Approach: They map how advanced reasoning optimizes each stage of RAG . they show how retrieved knowledge supply missing premises and expand context for complex inference .
Outcome: The proposed frameworks achieve state-of-the-art across knowledge-intensive benchmarks.
Know Your RAG: Dataset Taxonomy and Generation Strategies for Evaluating RAG Systems (2025.coling-industry)

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Challenge: Retrieval Augmented Generation (RAG) systems are widespread in the industry.
Approach: They propose to use Q&A datasets to assess retrieval performance and label-targeted data generation to refine RAG datasets.
Outcome: The proposed system can generate Q&A datasets with fine-tuned small LLMs.
MES-RAG: Bringing Multi-modal, Entity-Storage, and Secure Enhancements to RAG (2025.findings-naacl)

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Challenge: Existing approaches to retrieve entity information are limited by document level retrieval and intermingled storage of information from different entities.
Approach: They propose a framework that enhances entity-specific query handling . MES-RAG introduces proactive security measures that ensure system integrity .
Outcome: Experimental results show that MES-RAG improves accuracy and recall . the framework can be integrated into existing RAG architectures .
Enhancing Retrieval-Augmented Generation: A Study of Best Practices (2025.coling-main)

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Challenge: Retrieval-augmented generation systems have shown remarkable advancements by integrating retrieval mechanisms into language models, enhancing their ability to produce more accurate and contextually relevant responses.
Approach: They propose to integrate query expansion, various novel retrieval strategies, and a Contrastive In-Context Learning RAG to improve response quality.
Outcome: The proposed RAGs incorporate query expansion, various novel retrieval strategies, and a novel Contrastive In-Context Learning RAG.
RAG in the Wild: On the (In)effectiveness of LLMs with Mixture-of-Knowledge Retrieval Augmentation (2026.findings-acl)

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Challenge: Retrieval-augmented generation (RAG) enhances large language models by integrating external knowledge retrieved at inference time.
Approach: They evaluate RAG systems using MassiveDS, a large-scale datastore with mixture of knowledge.
Outcome: The proposed approach improves performance on knowledge-intensive NLP tasks.
Searching for Best Practices in Retrieval-Augmented Generation (2024.emnlp-main)

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Challenge: Retrieval-augmented generation (RAG) techniques have proven to be effective in integrating up-to-date information, mitigating hallucinations, and enhancing response quality, especially in specialized domains.
Approach: They propose several strategies for deploying RAG that balance performance and efficiency.
Outcome: The proposed approaches can significantly enhance question-answering capabilities and accelerate the generation of multimodal content using a “retrieval as generation” strategy.
RAGLAB: A Modular and Research-Oriented Unified Framework for Retrieval-Augmented Generation (2024.emnlp-demo)

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Challenge: Existing research on Retrieval Augmented Generation (RAG) does not address the problem of hallucinations and real-time updating of knowledge.
Approach: They propose a modular open-source library to equip LLMs with external knowledge.
Outcome: The proposed approach reduces the need for expensive open-source tools and lacks fair comparisons between novel RAG algorithms.

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