A Survey of Knowledge Enhanced Pre-trained Language Models
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Abstract (arXiv)
Pre-trained Language Models (PLMs) which are trained on large text corpus via self-supervised learning method, have yielded promising performance on various tasks in Natural Language Processing (NLP). However, though PLMs with huge parameters can effectively possess rich knowledge learned from massive training text and benefit downstream tasks at the fine-tuning stage, they still have some limitations such as poor reasoning ability due to the lack of external knowledge. Research has been dedicated to incorporating knowledge into PLMs to tackle these issues. In this paper, we present a comprehensive review of Knowledge Enhanced Pre-trained Language Models (KE-PLMs) to provide a clear insight into this thriving field. We introduce appropriate taxonomies respectively for Natural Language Understanding (NLU) and Natural Language Generation (NLG) to highlight these two main tasks of NLP. For NLU, we divide the types of knowledge into four categories: linguistic knowledge, text knowledge, knowledge graph (KG), and rule knowledge. The KE-PLMs for NLG are categorized into KG-based and retrieval-based methods. Finally, we point out some promising future directions of KE-PLMs.
Key facts. Cited by 76 papers in the map (data through 7 Oct 2026). Builds on 110 of its 145 references that are in the map. First posted on arXiv 11 Nov 2022.
Builds on
110 of 145 references.
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50 most cited of 110 All 110 (JSON)
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Citing papers per year: 2022: 1; 2023: 17; 2024: 31; 2025: 19; 2026: 8.
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- 2024FiDeLiS: Faithful Reasoning in Large Language Model for Knowledge Graph Question Answeringcited by 38
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- 2024Can Knowledge Graphs Make Large Language Models More Trustworthy? An Empirical Study Over Open-ended Question Answering10 Oct 2024
- 2024LLM-Powered Explanations: Unraveling Recommendations Through Subgraph Reasoning22 Jun 2024
- 2024FiDeLiS: Faithful Reasoning in Large Language Model for Knowledge Graph Question Answering22 May 2024
- 2024Demystifying Chains, Trees, and Graphs of Thoughts25 Jan 2024
- 2023Knowledge Graphs are not Created Equal: Exploring the Properties and Structure of Real KGs10 Nov 2023
- 2023LatEval: An Interactive LLMs Evaluation Benchmark with Incomplete Information from Lateral Thinking Puzzles21 Aug 2023
- 2023Think-on-Graph: Deep and Responsible Reasoning of Large Language Model on Knowledge Graph15 Jul 2023
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- 2023Give Us the Facts: Enhancing Large Language Models with Knowledge Graphs for Fact-aware Language Modelingcited by 56
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- 2026Knowledge Graphs Meet Graph Neural Networks: A Comprehensive Survey12 May 2026
- 2026DSIPA: Detecting LLM-Generated Texts via Sentiment-Invariant Patterns Divergence Analysis29 Apr 2026
- 2026Generalizing Dynamics Modeling More Easily from Representation Perspective24 Mar 2026
- 2026Beyond Static Models: An Evolving Framework for Continual Learning in Large Language Models across Training Stages13 Mar 2026
- 2026<SOG_k>: One LLM Token for Explicit Graph Structural Understanding2 Feb 2026
- 2025LIME: Making LLM Data More Efficient with Linguistic Metadata Embeddings8 Dec 2025
- 2025Robust and Generalizable GNN Fine-Tuning via Uncertainty-aware Adapter Learning24 Nov 2025
- 2025REx86: A Local Large Language Model for Assisting in x86 Assembly Reverse Engineering23 Oct 2025
- 2025Large Language Models' Varying Accuracy in Recognizing Risk-Promoting and Health-Supporting Sentiments in Public Health Discourse: The Cases of HPV Vaccination and Heated Tobacco Products6 Jul 2025
- 2025Instruction Learning Paradigms: A Dual Perspective on White-box and Black-box LLMs14 Jun 2025
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