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LLM-KG4QA: Large Language Models and Knowledge Graphs for Question Answering

Awesome Stars Forks

🔔 News

  • 2025-05 The preprint of our extended survey is avaliable on arXiv.
  • 2025-02 Our tutorial was accepted to be presented at EDBT2025
  • 2024-12 We create this repository to maintain a paper list on LLMs and KGs for QA.

If you find our work is useful, please cite our paper by using the following BibTeX entry.

@article{ma2025llmkg4qa,
  title={Large Language Models Meet Knowledge Graphs for Question Answering: Synthesis and Opportunities},
  author={Ma, Chuangtao and Chen, Yongrui and Wu, Tianxing and Khan, Arijit and Wang, Haofen},
  journal={arXiv preprint arXiv:2505.20099},
  year={2025}
}

Content


1. LLMs and KGs for QA

KGs as Background Knowledge

Pre-training and Fine-tuning

NO Title Venue Year Category Paper Link
1 Deep Bidirectional Language-Knowledge Graph pretraining NeurIPS 2022 Pre-training Link
2 GreaseLM: Graph REASoning Enhanced Language Models ICLR 2022 Pre-training Link
3 InfuserKI: Enhancing Large Language Models with Knowledge Graphs via Infuser-Guided Knowledge Integration LLM+KG@VLDB 2024 Pre-training Link
4 Large Language Models Meet Knowledge Graphs to Answer Factoid Questions PACLIC 2023 Pre-training Link
5 KaLM: Knowledge-aligned Autoregressive Language Modeling via Dual-view Knowledge Graph Contrastive Learning arXiv 2024 Pre-training Link
6 KBLaM: Knowledge Base augmented Language Model ICLR 2025 Pre-training Link
7 KnowLA: Enhancing Parameter-efficient Finetuning with Knowledgeable Adaptation NAACL 2024 Fine-Tuning Link
8 KG-Adapter: Enabling Knowledge Graph Integration in Large Language Models through Parameter-Efficient Fine-Tuning ACL Findlings 2024 Fine-Tuning Link
9 A GAIL Fine-Tuned LLM Enhanced Framework for Low-Resource Knowledge Graph Question Answering CIKM 2024 Fine-Tuning Link
10 Knowledge Graph Finetuning Enhances Knowledge Manipulation in Large Language Models ICLR 2025 Fine-Tuning Link
11 KLearn Together: Joint Multitask Finetuning of Pretrained KG-enhanced LLM for Downstream Tasks GenAIK@COLING 2025 Fine-Tuning Link
12 Improving Pre-trained Language Models with Knowledge Enhancement and Filtering Framework NAACL Findings 2025 Fine-Tuning Link
13 Prompting Large Language Models with Knowledge Graphs for Question Answering Involving Long-tail Facts arXiv 2024 KG-Augmented Prompting Link
14 KnowGPT: Knowledge Graph based Prompting for Large Language Models arXiv 2024 KG-Augmented Prompting Link
15 Knowledge-Augmented Language Model Prompting for Zero-Shot Knowledge Graph Question Answering NLRSE 2023 KG-Augmented Prompting Link
16 Retrieve-Rewrite-Answer: A KG-to-Text Enhanced LLMs Framework for Knowledge Graph Question Answering IJCKG 2023 KG-Augmented Prompting Link
17 Mitigating LLM Hallucinations with Knowledge Graphs: A Case Study arXiv 2025 KG-Augmented Prompting Link

RAG (Retrieval Augmented Generation)

NO Title Venue Year Category Paper Link
1 Enhancing Textbook Question Answering Task with Large Language Models and Retrieval Augmented Generation arXiv 2024 RAG Link
2 Retrieval-enhanced Knowledge Editing in Language Models for Multi-Hop Question Answering CIKM 2024 RAG Link
3 Understand What LLM Needs: Dual Preference Alignment for Retrieval-Augmented Generation arXiv 2024 RAG Link
4 RAG-based Question Answering over Heterogeneous Data and Text arXiv 2024 RAG Link
5 Awakening Augmented Generation: Learning to Awaken Internal Knowledge of Large Language Models for Question Answering COLING 2025 RAG Link
6 SAGE: A Framework of Precise Retrieval for RAG arXiv 2025 RAG Link
7 From Local to Global: A Graph RAG Approach to Query-Focused Summarization arXiv 2024 Graph RAG Link
8 LightRAG: Simple and Fast Retrieval-Augmented Generatio arXiv 2024 Graph RAG Link
9 GRAG: Graph Retrieval-Augmented Generation arXiv 2024 Graph RAG Link
10 HybGRAG: Hybrid Retrieval-Augmented Generation on Textual and Relational Knowledge Bases arXiv 2024 Graph RAG Link
11 CG-RAG: Research Question Answering by Citation Graph Retrieval-Augmented LLMs arXiv 2025 Graph RAG Link
12 MiniRAG: Towards Extremely Simple Retrieval-Augmented Generation arXiv 2025 Graph RAG Link
13 GFM-RAG: Graph Foundation Model for Retrieval Augmented Generation arXiv 2025 Graph RAG Link
14 MSG-LLM: A Multi-scale Interactive Framework for Graph-enhanced Large Language Models COLING 2025 Graph RAG Link
15 PathRAG: Pruning Graph-based Retrieval Augmented Generation with Relational Paths arXiv 2025 Graph RAG Link
16 In-depth Analysis of Graph-based RAG in a Unified Framework arXiv 2025 Graph RAG Link
17 Empowering GraphRAG with Knowledge Filtering and Integration arXiv 2025 Graph RAG Link
18 Graph Neural Network Enhanced Retrieval for Question Answering of Large Language Models NAACL 2025 Graph RAG Link
19 NodeRAG: Structuring Graph-based RAG with Heterogeneous Nodes arXiv 2025 Graph RAG Link
20 KG-RAG: Bridging the Gap Between Knowledge and Creativity arXiv 2024 KG RAG Link
21 Knowledge Graph-extended Retrieval Augmented Generation for Question Answering arXiv 2025 KG RAG Link
22 Retrieval-Augmented Generation with Knowledge Graphs for Customer Service Question Answering SIGIR 2024 KG RAG Link
23 REnhancing Large Language Models with Knowledge Graphs for Robust Question Answering ICPADS 2024 KG RAG Link
24 FRAG: A Flexible Modular Framework for Retrieval-Augmented Generation based on Knowledge Graphs arXiv 2025 KG RAG Link
25 SimGRAG: Leveraging Similar Subgraphs for Knowledge Graphs Driven Retrieval-Augmented Generation arXiv 2025 KG RAG Link
26 RGR-KBQA: Generating Logical Forms for Question Answering Using Knowledge-Graph-Enhanced Large Language Model COLING 2025 KG RAG Link
27 Knowledge Graph-Guided Retrieval Augmented Generation arXiv 2025 KG RAG Link
28 Simple Is Effective: The Roles of Graphs and Large Language Models in Knowledge-Graph-Based Retrieval-Augmented Generation ICLR 2025 KG RAG Link
29 CoT-RAG: Integrating Chain of Thought and Retrieval-Augmented Generation to Enhance Reasoning in Large Language Models arXiv 2025 KG RAG Link
30 A Pilot Empirical Study on When and How to Use Knowledge Graphs as Retrieval Augmented Generation arXiv 2025 KG RAG Link
31 A Systematic Exploration of Knowledge Graph Alignment with Large Language Models in Retrieval Augmented Generation AAAI 2025 KG RAG Link
32 Evaluating Knowledge Graph Based Retrieval Augmented Generation Methods under Knowledge Incompleteness arXiv 2025 KG RAG Link
33 RAG-KG-IL: A Multi-Agent Hybrid Framework for Reducing Hallucinations and Enhancing LLM Reasoning through RAG and Incremental Knowledge Graph Learning Integration arXiv 2025 KG RAG Link
34 Empowering LLMs by hybrid retrieval-augmented generation for domain-centric Q&A in smart manufacturing Advanced Engineering Informatics 2025 Hybrid RAG Link
35 Spatial-RAG: Spatial Retrieval Augmented Generation for Real-World Spatial Reasoning Questions arXiv 2025 Spatial RAG Link
36 Spatial-RAG: Spatial Retrieval Augmented Generation for Real-World Spatial Reasoning Questions arXiv 2025 Spatial RAG Link

KGs as Reasoning Guideline

NO Title Venue Year Category Paper Link
1 Subgraph Retrieval Enhanced Model for Multi-hop Knowledge Base Question Answerings ACL 2022 Offline KG Guidelines Link
2 keqing: knowledge-based question answering is a nature chain-of-thought mentor of LLM arXiv 2023 Offline KG Guidelines Link
3 Explore then Determine: A GNN-LLM Synergy Framework for Reasoning over Knowledge Graph arXiv 2024 Offline KG Guidelines Link
4 Graph-constrained Reasoning: Faithful Reasoning on Knowledge Graphs with Large Language Models arXiv 2024 Offline KG Guidelines Link
5 Reasoning with Trees: Faithful Question Answering over Knowledge Graph COLING 2025 Offline KG Guidelines Link
6 Empowering Language Models with Knowledge Graph Reasoning for Open-Domain Question Answering EMNLP 2022 Online KG Guildlines Link
7 Knowledge-Enhanced Iterative Instruction Generation and Reasoning for Knowledge Base Question Answering NLPCC 2022 Online KG Guildlines Link
8 Evaluating and Enhancing Large Language Models for Conversational Reasoning on Knowledge Graphs arXiv 2023 Online KG Guildlines Link
9 Think-on-Graph: Deep and Responsible Reasoning of Large Language Model on Knowledge Graph ICLR 2024 Online KG Guildlines Link
10 Think-on-Graph 2.0: Deep and Faithful Large Language Model Reasoning with Knowledge-guided Retrieval Augmented Generation ICLR 2024 Online KG Guildlines Link
11 KARPA: A Training-free Method of Adapting Knowledge Graph as References for Large Language Model's Reasoning Path Aggregation arXiv 2024 Online KG Guildlines Link
12 Retrieval and Reasoning on KGs: Integrate Knowledge Graphs into Large Language Models for Complex Question Answering EMNLP 2024 Online KG Guildlines Link
13 KG-Agent: An Efficient Autonomous Agent Framework for Complex Reasoning over Knowledge Grap arXiv 2024 Agent-based KG Guildlines Link
14 ODA: Observation-Driven Agent for integrating LLMs and Knowledge Graphs ACL Findings 2024 Agent-based KG Guildlines Link
15 A Collaborative Reasoning Framework Powered by Reinforcement Learning and Large Language Models for Complex Questions Answering over Knowledge Graph COLING 2025 Collaborative Reasoning Link
16 Rule-KBQA: Rule-Guided Reasoning for Complex Knowledge Base Question Answering with Large Language Models COLING 2025 Rule-Guided Reasoning Link

KGs as Refiner and Filter

NO Title Venue Year Category Paper Link
1 Answer Candidate Type Selection: Text-To-Text Language Model for Closed Book Question Answering Meets Knowledge Graphs KONVENS 2023 KG-Driven Filtering and Validation Link
2 KG-Rank: Enhancing Large Language Models for Medical QA with Knowledge Graphs and Ranking Techniques BioNLP Workshop 2024 KG-Driven Filtering and Validation Link
3 Mitigating Large Language Model Hallucinations via Autonomous Knowledge Graph-based Retrofitting AAAI 2024 KG-Driven Filtering and Validation Link
4 Evidence-Focused Fact Summarization for Knowledge-Augmented Zero-Shot Question Answering ariXv 2024 KG-Augmented Output Refinement Link
5 Interactive-KBQA: Multi-Turn Interactions for Knowledge Base Question Answering with Large Language Models ACL 2024 KG-Augmented Output Refinement Link
6 Learning to Plan for Retrieval-Augmented Large Language Models from Knowledge Graphs arXiv 2024 KG-Augmented Output Refinement Link
7 Optimizing Knowledge Integration in Retrieval-Augmented Generation with Self-Selection arXiv 2025 RAG-based Answers Selection Link

2. Complex QA

Explainable QA

NO Title Venue Year Category Paper Link
1 Reasoning over Hierarchical Question Decomposition Tree for Explainable Question Answering ACL 2024 - Link
2 Explainable Conversational Question Answering over Heterogeneous Sources via Iterative Graph Neural Networks SIGIR 2023 - Link
3 Retrieval In Decoder benefits generative models for explainable complex question answering Neural Networks 2025 - Link

Multi-Modal QA

NO Title Venue Year Category Paper Link
1 Lako: Knowledge-driven visual question answering via late knowledge-to text injection IJCKG 2022 VQA Link
2 Modality-Aware Integration with Large Language Models for Knowledge-Based Visual Question Answering ACL 2024 VQA Link
3 Knowledge-Enhanced Visual Question Answering with Multi-modal Joint Guidance JCKG 2024 VQA Link
4 ReasVQA: Advancing VideoQA with Imperfect Reasoning Process arXiv 2025 VQA Link
5 Fine-grained knowledge fusion for retrieval-augmented medical visual question answering Information Fusion 2025 VQA Link
6 RAMQA: A Unified Framework for Retrieval-Augmented Multi-Modal Question Answering arXiv 2025 Multi-Modal QA Link
7 MuRAR: A Simple and Effective Multimodal Retrieval and Answer Refinement Framework for Multimodal Question Answering arXiv 2024 Multi-Modal QA Link

Multi-Document QA

NO Title Venue Year Category Paper Link
1 Knowledge Graph Prompting for Multi-Document Question Answering AAAI 2024 Multi-doc QA Link
2 CuriousLLM: Elevating Multi-Document QA with Reasoning-Infused Knowledge Graph Prompting arXiv 2024 Multi-doc QA Link
3 VisDoM: Multi-Document QA with Visually Rich Elements Using Multimodal Retrieval-Augmented Generation arXiv 2024 Multi-doc QA Link

Multi-Hop QA

NO Title Venue Year Category Paper Link
1 GraphLLM: A General Framework for Multi-hop Question Answering over Knowledge Graphs Using Large Language Models NLPCC 2024 Multi-Hop QA Link
2 LLM-KGMQA: Large Language Model-Augmented Multi-Hop Question-Answering System based on Knowledge Graph in Medical Field KBS 2024 Multi-Hop QA Link
3 PokeMQA: Programmable knowledge editing for Multi-hop Question Answering ACL 2024 Multi-Hop QA Link
4 HOLMES: Hyper-Relational Knowledge Graphs for Multi-hop Question Answering using LLMs ACL 2024 Multi-Hop QA Link
5 LLM-Based Multi-Hop Question Answering with Knowledge Graph Integration in Evolving Environments EMNLP 2024 Multi-Hop QA Link
6 SG-RAG: Multi-Hop Question Answering With Large Language Models Through Knowledge Graphs ICNLSP 2024 Multi-Hop QA Link
7 From Superficial to Deep: Integrating External Knowledge for Follow-up Question Generation Using Knowledge Graph and LLM COLING 2025 Multi-Hop QA Link
8 Multi-Hop Question Answering with LLMs & Knowledge Graphs Blog 2023 Multi-Hop QA Link
9 Mitigating Lost-in-Retrieval Problems in Retrieval Augmented Multi-Hop Question Answering arXiv 2025 Multi-Hop QA Link
10 Knowledge Graph Based Retrieval-Augmented Generation for Multi-Hop Question Answering Enhancement IEEE IKT 2024 Multi-Hop QA Link
11 A Framework of Knowledge Graph-Enhanced Large Language Model Based on Question Decomposition and Atomic Retrieval EMNLP Findings 2024 Multi-Hop QA Link

Multi-run and Conversational QA

NO Title Venue Year Category Paper Link
1 Explainable Conversational Question Answering over Heterogeneous Sources via Iterative Graph Neural Networks SIGIR 2023 Conversational QA Link
2 Conversational Question Answering with Language Models Generated Reformulations over Knowledge Graph ACL Findings 2024 Conversational QA Link
3 LLM-Based Multi-Hop Question Answering with Knowledge Graph Integration in Evolving Environments EMNLP 2024 Multi-Hop QA Link
4 Learning When to Retrieve, What to Rewrite, and How to Respond in Conversational QA EMNLP 2024 Conversational QA Link
5 ConvKGYarn: Spinning Configurable and Scalable Conversational Knowledge Graph QA Datasets with Large Language Models EMNLP 2024 Conversational QA Link
6 Dialogue Benchmark Generation from Knowledge Graphs with Cost-Effective Retrieval-Augmented LLMs SIGMOD 2025 Dialogue Link

Temporal QA

NO Title Venue Year Category Paper Link
1 KG-IRAG: A Knowledge Graph-Based Iterative Retrieval-Augmented Generation Framework for Temporal Reasoning arXiv 2025 Temporal QA Link
2 Two-stage Generative Question Answering on Temporal Knowledge Graph Using Large Language Models ACL Findings 2024 Temporal QA Link
3 TimeR4 : Time-aware Retrieval-Augmented Large Language Models for Temporal Knowledge Graph Question Answering EMNLP 2024 Temporal QA Link

Multi-domain and Multilingual QA

NO Title Venue Year Category Paper Link
1 MKG-Rank: Enhancing Large Language Models with Knowledge Graph for Multilingual Medical Question Answering arXiv 2025 Multilingual QA Link
2 Language Models as SPARQL Query Filtering for Improving the Quality of Multilingual Question Answering over Knowledge Graphs IWCE 2024 Multilingual QA Link

3. Advanced Topics

Optimization

NO Title Venue Year Category Paper Link
1 Empowering Large Language Models to Set up a Knowledge Retrieval Indexer via Self-Learning arXiv 2023 Index-based Optimization Link
2 Graph of Records: Boosting Retrieval Augmented Generation for Long-context Summarization with Graphs ICLR 2024 Index-based Optimization Link
3 KG-Retriever: Efficient Knowledge Indexing for Retrieval-Augmented Large Language Models arXiv 2024 Index-based Optimization Link
4 Prompting Is Programming: A Query Language for Large Language Models PLDL 2023 Prompting-based Optimization Link
5 LLM as Prompter: Low-resource Inductive Reasoning on Arbitrary Knowledge Graphs ACL Findings 2024 Prompting-based Optimization Link
6 LightRAG: Simple and Fast Retrieval-Augmented Generation arXiv 2024 Graph retrieval-based optimization Link
7 Clue-Guided Path Exploration: Optimizing Knowledge Graph Retrieval with Large Language Models to Address the Information Black Box Challenge arXiv 2024 Graph retrieval-based optimization Link
8 Optimizing open-domain question answering with graph-based retrieval augmented generation arXiv 2025 Graph retrieval-based optimization Link
9 Understand What LLM Needs: Dual Preference Alignment for Retrieval-Augmented Generation WWW 2025 Graph retrieval-based optimization Link
10 Optimizing Knowledge Integration in Retrieval-Augmented Generation with Self-Selection arXiv 2025 Graph retrieval-based optimization Link
11 Systematic Knowledge Injection into Large Language Models via Diverse Augmentation for Domain-Specific RAG arXiv 2025 Graph retrieval-based optimization Link
12 KG-Rank: Enhancing Large Language Models for Medical QA with Knowledge Graphs and Ranking Techniques BioNLP Workshop 2024 Ranking-based optimization Link
13 KS-LLM: Knowledge Selection of Large Language Models with Evidence Document for Question Answering arXiv 2024 Ranking-based optimization Link
14 RAG-based Question Answering over Heterogeneous Data and Text arXiv 2024 Ranking-based optimization Link
15 Cost-efficient Knowledge-based Question Answering with Large Language Models arXiv 2024 Cost-based optimization Link
16 KGLens: Towards Efficient and Effective Knowledge Probing of Large Language Models with Knowledge Graphs arXiv 2024 Cost-based optimization Link
17 Knowledge Graph-Enhanced Large Language Models via Path Selection ACL Findings 2024 Path-based optimization Link
18 LEGO-GraphRAG: Modularizing Graph-based Retrieval-Augmented Generation for Design Space Exploration arXiv 2024 Path-based optimization Link
19 Query Optimization for Parametric Knowledge Refinement in Retrieval-Augmented Large Language Models arXiv 2024 Query-based optimization Link
20 A MapReduce Approach to Effectively Utilize Long Context Information in Retrieval Augmented Language Models arXiv 2024 MapReduce-based optimization Link
21 PIP-KAG: Mitigating Knowledge Conflicts in Knowledge-Augmented Generation via Parametric Pruning arXiv 2025 Knowledge conflicts mitigation Link
22 Direct Retrieval-augmented Optimization: Synergizing Knowledge Selection and Language Models arXiv 2025 Knowledge conflicts mitigation Link

Data Management

NO Title Venue Year Category Paper Link
1 Triple Augmented Generative Language Models for SPARQL Query Generation from Natural Language Questions arXiv 2024 NL2GQL Link
2 R3-NL2GQL: A Model Coordination and Knowledge Graph Alignment Approach for NL2GQL ACL Findings 2024 NL2GQL Link
3 Aligning Large Language Models to a Domain-specific Graph Database for NL2GQL CIKM 2024 NL2GQL Link
4 UniOQA: A Unified Framework for Knowledge Graph Question Answering with Large Language Models arXiv 2024 NL2GQL Link
5 NAT-NL2GQL: A Novel Multi-Agent Framework for Translating Natural Language to Graph Query Language arXiv 2024 NL2GQL Link
6 CypherBench: Towards Precise Retrieval over Full-scale Modern Knowledge Graphs in the LLM Era arXiv 2024 NL2GQL Link
7 SpCQL: A Semantic Parsing Dataset for Converting Natural Language into Cypher CIKM 2022 NL2GQL Link
8 Robust Text-to-Cypher Using Combination of BERT, GraphSAGE, and Transformer (CoBGT) Model Applied Sciences 2024 NL2GQL Link
9 Real-Time Text-to-Cypher Query Generation with Large Language Models for Graph Databases Future Internet 2024 NL2GQL Link
10 LLM4QA: Leveraging Large Language Model for Efficient Knowledge Graph Reasoning with SPARQL Query JAIT 2024 NL2GQL Link
11 Text to Graph Query Using Filter Condition Attributes LSGDA@VLDB 2024 NL2GQL Link
12 Text-to-CQL Based on Large Language Model and Graph Pattern Enhancement PRML 2024 NL2GQL Link
13 Demystifying Natural Language to Cypher Conversion with OpenAI, Neo4j, LangChain, and LangSmith Blog 2024 NL2GQL Link
14 Text2Cypher, the beginning of the Graph + LLM stack Blog 2023 NL2GQL Link
15 Text2Cypher - Natural Language Queries Blog 2023 NL2GQL Link
16 A Framework for Question Answering on Knowledge Graphs Using Large Language Models ESWC 2024 NL2GQL Link
17 LLaSA: Large Language and Structured Data Assistant arXiv 2024 Structured Data Assistant Link
18 GraphRAG and role of Graph Databases in Advancing AI IJRCAIT 2024 Graph DB Link
19 TigerVector: Supporting Vector Search in Graph Databases for Advanced RAGs arXiv 2025 Graph DB Link
20 Increasing Accuracy of LLM-powered Question Answering on SQL databases: Knowledge Graphs to the Rescue Data Engineering Bulletin 2024 RDB QA Link
21 Symphony: Towards Trustworthy Question Answering and Verification using RAG over Multimodal Data Lakes Data Engineering Bulletin 2024 RDB QA Link
22 Increasing the LLM Accuracy for Question Answering: Ontologies to the Rescue! arXiv 2024 RDB QA Link
23 GTR: Graph-Table-RAG for Cross-Table Question Answering arXiv 2025 RDB QA Link
24 ER-RAG: Enhance RAG with ER-Based Unified Modeling of Heterogeneous Data Sources arXiv 2025 RDB QA Link

4. Benchmark and Applications

Benchmark Dataset

NO Title Venue Year Dataset Category Paper Link
1 The Value of Semantic Parse Labeling for Knowledge Base Question Answering ACL 2016 WebQSP KBQA and KGQA Link
2 Benchmarking Large Language Models in Complex Question Answering Attribution using Knowledge Graphs arXiv 2024 CAQA KBQA and KGQA Link
3 G-Retriever: Retrieval-Augmented Generation for Textual Graph Understanding and Question Answering NeurIPS 2024 GraphQA KBQA and KGQA Link
4 Automatic Question-Answer Generation for Long-Tail Knowledge KnowledgeNL@KDD 2023 Long-tail QA KBQA and KGQA Link
5 BioASQ-QA: A manually curated corpus for Biomedical Question Answering Scientific Data 2023 BioASQ-QA KBQA and KGQA Link
6 HotpotQA: A Dataset for Diverse, Explainable Multi-hop Question Answering EMNLP 2018 HotpotQA KBQA and KGQA Link
7 CR-LT-KGQA: A Knowledge Graph Question Answering Dataset Requiring Commonsense Reasoning and Long-Tail Knowledge arXiv 2024 CR-LT-KGQA KBQA and KGQA Link
8 CPAT-Questions: A Self-Updating Benchmark for Present-Anchored Temporal Question-Answering ACL Findings 2024 TemporalQA KBQA and KGQA Link
9 SituatedQA: Incorporating Extra-Linguistic Contexts into QA EMNLP 2024 SituatedQA Open-retrieval QA Link
10 CommonsenseQA: A Question Answering Challenge Targeting Commonsense Knowledge NAACL 2024 CommonsenseQA Multiple-choice QA Link
11 FanOutQA: A Multi-Hop, Multi-Document Question Answering Benchmark for Large Language Models ACL 2024 FanOutQA Multi-hop QA Link
12 MINTQA: A Multi-Hop Question Answering Benchmark for Evaluating LLMs on New and Tail Knowledge arXiv 2024 MINTQA Multi-hop QA Link
13 What Disease Does This Patient Have? A Large-Scale Open Domain Question Answering Dataset from Medical Exams Applied Sciences 2021 MedQA Multiple-choice QA Link
14 PAT-Questions: A Self-Updating Benchmark for Present-Anchored Temporal Question-Answering ACL Findings 2024 PAQA Temporal QA Link
15 MenatQA: A New Dataset for Testing the Temporal Comprehension and Reasoning Abilities of Large Language Models ACL Findings 2023 MenatQA Temporal QA Link
16 TempTabQA: Temporal Question Answering for Semi-Structured Tables EMNLP 2023 TempTabQA Temporal QA Link
17 Complex Temporal Question Answering on Knowledge Graphs CIKM 2021 EXAQT Temporal QA Link
18 Leave No Document Behind: Benchmarking Long-Context LLMs with Extended Multi-Doc QA EMNLP 2024 Loong Multi-doc QA Link
19 MRAMG-Bench: A BeyondText Benchmark for Multimodal Retrieval-Augmented Multimodal Generation arXiv 2025 MRAMG Multi-modal QA Link
20 OMG-QA: Building Open-Domain Multi-Modal Generative Question Answering Systems EMNLP 2024 OMG-QA Multi-domain Multilingual QA Link
21 WebFAQ: A Multilingual Collection of Natural Q&A Datasets for Dense Retrieval arXiv 2025 WebFAQ Multi-domain Multilingual QA Link
22 M2QA: Multi-domain Multilingual Question Answering EMNLP 2024 M2QA Multi-modal QA Link
23 M3SciQA: A Multi-Modal Multi-Document Scientific QA Benchmark for Evaluating Foundation Models ACL Findings 2024 M3SciQA Multi-modal QA Link
24 A Benchmark to Understand the Role of Knowledge Graphs on Large Language Model's Accuracy for Question Answering on Enterprise SQL Databases GRADES-NDA 2024 ChatData LLM and KGs for QA Link
25 XplainLLM: A Knowledge-Augmented Dataset for Reliable Grounded Explanations in LLMs EMNLP 2024 XplainLLM LLM and KGs for QA Link
26 Developing a Scalable Benchmark for Assessing Large Language Models in Knowledge Graph Engineering SEMANTICS 2023 LLM-KG-Bench LLM and KGs for QA Link
27 Docugami Knowledge Graph Retrieval Augmented Generation (KG-RAG) Datasets - 2023 KG-RAG LLM and KGs for QA -
28 How Credible Is an Answer From Retrieval-Augmented LLMs? Investigation and Evaluation With Multi-Hop QA ACL ARR 2024 - LLM and KGs for QA Link
29 Can Knowledge Graphs Make Large Language Models More Trustworthy? An Empirical Study over Open-ended Question Answering arXiv 2024 OKGQA LLM and KGs for QA Link
30 MiniRAG: Towards Extremely Simple Retrieval-Augmented Generation arXiv 2025 LiHua-World LLM and KGs for QA Link
31 Learn to Explain: Multimodal Reasoning via Thought Chains for Science Question Answering NeurIPS Dataset and Benchmarks Track 2022 ScienceQA LLM and KGs for QA Link
32 STaRK: Benchmarking LLM Retrieval on Textual and Relational Knowledge Bases NeurIPS Dataset and Benchmarks Track 2024 STaRK LLM and KGs for QA Link
33 mmRAG: A Modular Benchmark for Retrieval-Augmented Generation over Text, Tables, and Knowledge Graphs arXiv 2025 mmRAG LLM and KGs for QA Link
34 LaRA: Benchmarking Retrieval-Augmented Generation and Long-Context LLMs -- No Silver Bullet for LC or RAG Routing arXiv 2025 LaRA LLM and KGs for QA Link
35 KGQAGen: Diagnosing and Addressing Pitfalls in KG-RAG Datasets, toward More Reliable Benchmarking - 2025 KGQAGen LLM and KGs for QA -

Industrial and Scientific Applications

NO Title Venue Year Github Category Paper Link
1 KAG: Boosting LLMs in Professional Domains via Knowledge Augmented Generation arXiv 2024 KAG LLM and KGs for QA Link
2 Fact Finder -- Enhancing Domain Expertise of Large Language Models by Incorporating Knowledge Graphs arXiv 2024 Fact Finder LLM and KGs for QA Link
3 Leveraging Large Language Models and Knowledge Graphs for Advanced Biomedical Question Answering Systems CSA 2024 2024 Cypher Translator LLM and KGs for QA Link
4 A Prompt Engineering Approach and a Knowledge Graph based Framework for Tackling Legal Implications of Large Language Model Answers arXiv 2024 - LLM and KGs for QA Link
5 Ontology-Aware RAG for Improved Question-Answering in Cybersecurity Education arXiv 2024 - LLM and KGs for QA Link
6 Knowledge Graphs as a source of trust for LLM-powered enterprise question answering Journal of Web Semantics 2025 - LLM and KGs for QA Link
7 MedRAG: Enhancing Retrieval-augmented Generation with Knowledge Graph-Elicited Reasoning for Healthcare Copilot WWW 2025 MedRAG LLM and KGs for QA Link
8 EICopilot: Search and Explore Enterprise Information over Large-scale Knowledge Graphs with LLM-driven Agents arXiv 2025 - LLM and KGs for QA Link
9 Nanjing Yunjin intelligent question-answering system based on knowledge graphs and retrieval augmented generation technology Heritage Science 2024 - LLM and KGs for QA Link
10 A Joint LLM-KG System for Disease Q&A IEEE JBHI 2025 - LLM and KGs for QA Link

Demo

NO Name Description Source Github
1 GraphRAG-QA An industrial demo of GraphRAG integrating several query engine for augmenting QA, NLP2Cypher-based KG query engine, vector RAG query engine, and Graph vector RAG query engine. NebulaGraph GraphRAG-QA
2 Neo4jRAG-QA This sample application demonstrates how to implement a Large Language Model (LLM) and Retrieval Augmented Generation (RAG) system with a Neo4j Graph Database. Neo4j Graph Neo4j Graph RAG
3 BioGraphRAG This a platform to integrate biomedical knowledge graphs stored in NebulaGraph with LLMs via GraphRAG architecture. BioGraphRAG
4 kotaemon An open-source clean & customizable RAG UI for chatting with your documents. Built with both end users and developers in mind. Cinnamon AI kotaemon
5 PIKE-RAG A secIalized KnowledgE and Rationale Augmented Generation, which focuses on extracting, understanding, and applying domain-specific knowledge to gradually guide LLMs toward accurate responses. Microsoft PIKE-RAG
6 AprèsCoT AprèsCoT: Explaining LLM Answers with Knowledge Graphs and Chain of Thought. EDBT25 Demo AprèsCoT

5. Related Survey

NO Title Venue Year Paper Link
1 Unifying Large Language Models and Knowledge Graphs: A Roadmap TKDE 2024 Link
2 Graph Retrieval-Augmented Generation: A Survey arXiv 2024 Link
3 Retrieval-Augmented Generation with Graphs (GraphRAG) arXiv 2024 Link
4 Multilingual Question Answering Systems for Knowledge Graphs—A Survey Semantic Web 2024 Link
5 Temporal Knowledge Graph Question Answering: A Survey arXiv 2024 Link
6 Knowledge Graph and Large Language Model Co-learning via Structure-oriented Retrieval Augmented Generation Data Engineering Bulletin 2024 Link
7 Research Trends for the Interplay between Large Language Models and Knowledge Graphs LLM+KG@VLDB2024 2024 Link
8 Neural-Symbolic Reasoning over Knowledge Graphs: A Survey from a Query Perspective arXiv 2024 Link
9 Large Language Models, Knowledge Graphs and Search Engines: A Crossroads for Answering Users' Questions arXiv 2025 Link
10 Knowledge Graphs, Large Language Models, and Hallucinations: An NLP Perspective Journal of Web Semantics 2025 Link
11 A Survey of Graph Retrieval-Augmented Generation for Customized Large Language Models arXiv 2025 Link
12 Agentic Retrieval-Augmented Generation: A Survey on Agentic RAG arXiv 2025 Link
13 A survey on augmenting knowledge graphs (KGs) with large language models (LLMs): models, evaluation metrics, benchmarks, and challenges Discover Artificial Intelligence 2024 Link
14 Unifying Large Language Models and Knowledge Graphs for efficient Regulatory Information Retrieval and Answer Generation REgNLP Workshop 2025 Link
15 A Comprehensive Survey of Knowledge-Based Vision Question Answering Systems: The Lifecycle of Knowledge in Visual Reasoning Task arXiv 2025 Link
16 Knowledge Conflicts for LLMs: A Survey EMNLP 2024 Link
17 A comprehensive survey on integrating large language models with knowledge-based methods Knowledge-Based Systems 2025 Link
18 Synergizing RAG and Reasoning: A Systematic Review arXiv 2025 Link
19 A Survey of Multimodal Retrieval-Augmented Generation arXiv 2025 Link
20 Retrieval-Augmented Generation with Knowledge Graphs: A Survey OpenReview 2025 Link
21 Complex QA and language models hybrid architectures, Survey arXiv 2023 Link
22 Injecting Domain-Specific Knowledge into Large Language Models: A Comprehensive Survey arXiv 2025 Link

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LLM-KG4QA: Large Language Models and Knowledge Graphs for Question Answering

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