How Does NLP Benefit Legal System: A Summary of Legal Artificial Intelligence
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Abstract (arXiv)
Legal Artificial Intelligence (LegalAI) focuses on applying the technology of artificial intelligence, especially natural language processing, to benefit tasks in the legal domain. In recent years, LegalAI has drawn increasing attention rapidly from both AI researchers and legal professionals, as LegalAI is beneficial to the legal system for liberating legal professionals from a maze of paperwork. Legal professionals often think about how to solve tasks from rule-based and symbol-based methods, while NLP researchers concentrate more on data-driven and embedding methods. In this paper, we introduce the history, the current state, and the future directions of research in LegalAI. We illustrate the tasks from the perspectives of legal professionals and NLP researchers and show several representative applications in LegalAI. We conduct experiments and provide an in-depth analysis of the advantages and disadvantages of existing works to explore possible future directions. You can find the implementation of our work from https://github.com/thunlp/CLAIM.
Key facts. Cited by 128 papers in the map (data through 7 Oct 2026). First posted on arXiv 25 Apr 2020.
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Citing papers per year: 2021: 17; 2022: 17; 2023: 33; 2024: 21; 2025: 20; 2026: 20.
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- 2021LexGLUE: A Benchmark Dataset for Legal Language Understanding in Englishcited by 302
- 2021CUAD: An Expert-Annotated NLP Dataset for Legal Contract Reviewcited by 232
- 2021When Does Pretraining Help? Assessing Self-Supervised Learning for Law and the CaseHOLD Datasetcited by 199
- 2023Large Language Models in Law: A Surveycited by 128
- 2023DISC-LawLLM: Fine-tuning Large Language Models for Intelligent Legal Servicescited by 117
- 2021Lawformer: A Pre-trained Language Model for Chinese Legal Long Documentscited by 115
- 2021MultiEURLEX -- A multi-lingual and multi-label legal document classification dataset for zero-shot cross-lingual transfercited by 89
- 2021Turn the Combination Lock: Learnable Textual Backdoor Attacks via Word Substitutioncited by 85
- 2021Paragraph-level Rationale Extraction through Regularization: A case study on European Court of Human Rights Casescited by 77
- 2023LEXTREME: A Multi-Lingual and Multi-Task Benchmark for the Legal Domaincited by 68
- 2021Swiss-Judgment-Prediction: A Multilingual Legal Judgment Prediction Benchmarkcited by 60
- 2023Precedent-Enhanced Legal Judgment Prediction with LLM and Domain-Model Collaborationcited by 52
38 more
- 2022A Survey on Legal Judgment Prediction: Datasets, Metrics, Models and Challengescited by 50
- 2022FairLex: A Multilingual Benchmark for Evaluating Fairness in Legal Text Processingcited by 48
- 2024Natural Language Processing for the Legal Domain: A Survey of Tasks, Datasets, Models, and Challengescited by 42
- 2022Pre-trained Language Models for the Legal Domain: A Case Study on Indian Lawcited by 39
- 2024AgentsCourt: Building Judicial Decision-Making Agents with Court Debate Simulation and Legal Knowledge Augmentationcited by 39
- 2023Natural Language Processing in the Legal Domaincited by 38
- 2024LawLLM: Law Large Language Model for the US Legal Systemcited by 37
- 2022LEVEN: A Large-Scale Chinese Legal Event Detection Datasetcited by 36
- 2024Facing the Elephant in the Room: Visual Prompt Tuning or Full Finetuning?cited by 31
- 2023KnowGPT: Knowledge Graph based Prompting for Large Language Modelscited by 30
- 2023A Comprehensive Evaluation of Large Language Models on Legal Judgment Predictioncited by 27
- 2021On the Ethical Limits of Natural Language Processing on Legal Textcited by 26
- 2022Named Entity Recognition in Indian court judgmentscited by 26
- 2024Federated Large Language Models: Current Progress and Future Directionscited by 22
- 2021Multi-granular Legal Topic Classification on Greek Legislationcited by 15
- 2021AutoLAW: Augmented Legal Reasoning through Legal Precedent Predictioncited by 14
- 2023The Cambridge Law Corpus: A Dataset for Legal AI Researchcited by 14
- 2021Dependency Learning for Legal Judgment Prediction with a Unified Text-to-Text Transformercited by 13
- 2023Bringing order into the realm of Transformer-based language models for artificial intelligence and lawcited by 13
- 2024Evaluating Differentially Private Synthetic Data Generation in High-Stakes Domainscited by 12
- 2021Equality before the Law: Legal Judgment Consistency Analysis for Fairnesscited by 11
- 2022HLDC: Hindi Legal Documents Corpuscited by 11
- 2023PIVOINE: Instruction Tuning for Open-world Information Extractioncited by 10
- 2023BLT: Can Large Language Models Handle Basic Legal Text?cited by 10
- 2023Finding the Law: Enhancing Statutory Article Retrieval via Graph Neural Networkscited by 9
- 2023Legal Extractive Summarization of U.S. Court Opinionscited by 9
- 2023Prototype-Based Interpretability for Legal Citation Predictioncited by 9
- 2023LAiW: A Chinese Legal Large Language Models Benchmarkcited by 9
- 2025Debate-Feedback: A Multi-Agent Framework for Efficient Legal Judgment Predictioncited by 9
- 2025Large Language Models Meet Legal Artificial Intelligence: A Surveycited by 9
- 2025Benchmarking Multi-Step Legal Reasoning and Analyzing Chain-of-Thought Effects in Large Language Modelscited by 9
- 2021Similar Cases Recommendation using Legal Knowledge Graphscited by 8
- 2022Exploiting Contrastive Learning and Numerical Evidence for Confusing Legal Judgment Predictioncited by 8
- 2023The Law and NLP: Bridging Disciplinary Disconnectscited by 8
- 2023MUSER: A Multi-View Similar Case Retrieval Datasetcited by 8
- 2022LegalRelectra: Mixed-domain Language Modeling for Long-range Legal Text Comprehensioncited by 7
- 2023Large Language Model Prompt Chaining for Long Legal Document Classificationcited by 7
- 2024LexSumm and LexT5: Benchmarking and Modeling Legal Summarization Tasks in Englishcited by 7
50 most cited of 128 All 128 (JSON)
- 2026ViLegalExpert: A Large-Scale Benchmark for Vietnamese Legal Retrieval and Question Answering from Real-World Consultations30 Sep 2026
- 2026Automated Regulatory Compliance Question Answering in Financial Services with Domain-Adapted Retrieval-Augmented Generation24 Sep 2026
- 2026An Instrument to Evaluate Governance Proposals: AI Policy Analysis at Scale30 Jul 2026
- 2026Constraint-Aware Hierarchical Search for Regulation-Driven Fine-Grained Classification12 Jul 2026
- 2026L-MAD: A Systematic Evaluation of Multi-Agent Debate Structures in Legal Reasoning10 Jul 2026
- 2026Legal Domain Adaptation of Modern BERT Models26 Jun 2026
- 2026Traceable by Design: An LLM Pipeline and Dashboard for EU Regulatory Consultation Analysis29 May 2026
- 2026The Cases LJP Never Sees: Prosecution Decision Prediction for More Complete Criminal Liability Assessment27 May 2026
- 2026Calibration vs Decision Making: Revisiting the Reliability Paradox in Unlearned Language Models20 May 2026
- 2026MAP-Law: Coverage-Driven Retrieval Control for Multi-Turn Legal Consultation2 May 2026
- 2026ReLeVAnT: Relevance Lexical Vectors for Accurate Legal Text Classification24 Apr 2026
- 2026REGREACT: Self-Correcting Multi-Agent Pipelines for Structured Regulatory Information Extraction13 Apr 2026
38 more
- 2026RCBSF: A Multi-Agent Framework for Automated Contract Revision via Stackelberg Game12 Apr 2026
- 2026From Query to Counsel: Structured Reasoning with a Multi-Agent Framework and Dataset for Legal Consultation12 Apr 2026
- 2026The Conundrum of Trustworthy Research on Attacking Personally Identifiable Information Removal Techniques9 Mar 2026
- 2026From Entropy to Calibrated Uncertainty: Training Language Models to Reason About Uncertainty6 Mar 2026
- 2026A Study on Building Efficient Zero-Shot Relation Extraction Models1 Mar 2026
- 2026SteuerLLM: Local specialized large language model for German tax law analysis11 Feb 2026
- 2026Knowledge Augmented Entity and Relation Extraction for Legal Documents with Hypergraph Neural Network9 Feb 2026
- 2026Mecellem Models: Turkish Models Trained from Scratch and Continually Pre-trained for the Legal Domain22 Jan 2026
- 2025Classifying long legal documents using short random chunks31 Dec 2025
- 2025Benchmarking Multi-Step Legal Reasoning and Analyzing Chain-of-Thought Effects in Large Language Models11 Nov 2025
- 2025Cross-Document Topic-Aligned Chunking for Retrieval-Augmented Generation8 Nov 2025
- 2025Comparison of Unsupervised Metrics for Evaluating Judicial Decision Extraction2 Oct 2025
- 2025Combining Knowledge Graphs and NLP to Analyze Instant Messaging Data in Criminal Investigations30 Sep 2025
- 2025Controlled Generation for Private Synthetic Text30 Sep 2025
- 2025Large Language Models Meet Legal Artificial Intelligence: A Survey12 Sep 2025
- 2025NOWJ@COLIEE 2025: A Multi-stage Framework Integrating Embedding Models and Large Language Models for Legal Retrieval and Entailment9 Sep 2025
- 2025ClaimGen-CN: A Large-scale Chinese Dataset for Legal Claim Generation24 Aug 2025
- 2025Incorporating Legal Logic into Deep Learning: An Intelligent Approach to Probation Prediction17 Aug 2025
- 2025The Judge Variable: Challenging Judge-Agnostic Legal Judgment Prediction18 Jul 2025
- 2025When Large Language Models Meet Law: Dual-Lens Taxonomy, Technical Advances, and Ethical Governance10 Jul 2025
- 2025A Data Science Approach to Calcutta High Court Judgments: An Efficient LLM and RAG-powered Framework for Summarization and Similar Cases Retrieval28 Jun 2025
- 2025LLMPR: A Novel LLM-Driven Transfer Learning based Petition Ranking Model27 May 2025
- 2025AppealCase: A Dataset and Benchmark for Civil Case Appeal Scenarios22 May 2025
- 2025Elevating Semantic Exploration: A Novel Approach Utilizing Distributed Repositories6 May 2025
- 2025LegalRAG: A Hybrid RAG System for Multilingual Legal Information Retrieval19 Apr 2025
- 2025Debate-Feedback: A Multi-Agent Framework for Efficient Legal Judgment Prediction7 Apr 2025
- 2025Improving Similar Case Retrieval Ranking Performance By Revisiting RankSVM16 Feb 2025
- 2025LawGPT: Knowledge-Guided Data Generation and Its Application to Legal LLM10 Feb 2025
- 2024Hybrid Deep Learning for Legal Text Analysis: Predicting Punishment Durations in Indonesian Court Rulings26 Oct 2024
- 2024Natural Language Processing for the Legal Domain: A Survey of Tasks, Datasets, Models, and Challenges25 Oct 2024
- 2024Exploring Possibilities of AI-Powered Legal Assistance in Bangladesh through Large Language Modeling22 Oct 2024
- 2024LexSumm and LexT5: Benchmarking and Modeling Legal Summarization Tasks in English12 Oct 2024
- 2024Evaluating Differentially Private Synthetic Data Generation in High-Stakes Domains10 Oct 2024
- 2024Federated Large Language Models: Current Progress and Future Directions24 Sep 2024
- 2024Experimenting with Legal AI Solutions: The Case of Question-Answering for Access to Justice12 Sep 2024
- 2024SEMDR: A Semantic-Aware Dual Encoder Model for Legal Judgment Prediction with Legal Clue Tracing19 Aug 2024
- 2024A Multi-Source Heterogeneous Knowledge Injected Prompt Learning Method for Legal Charge Prediction5 Aug 2024
- 2024LawLLM: Law Large Language Model for the US Legal System27 Jul 2024
50 newest of 128 All 128 (JSON)
- 2024AgentsCourt: Building Judicial Decision-Making Agents with Court Debate Simulation and Legal Knowledge Augmentationcited by 39
- 2025Debate-Feedback: A Multi-Agent Framework for Efficient Legal Judgment Predictioncited by 9
- 2026RCBSF: A Multi-Agent Framework for Automated Contract Revision via Stackelberg Gamecited by 3
- 2026REGREACT: Self-Correcting Multi-Agent Pipelines for Structured Regulatory Information Extractioncited by 0
- 2026L-MAD: A Systematic Evaluation of Multi-Agent Debate Structures in Legal Reasoningcited by 0
- 2026L-MAD: A Systematic Evaluation of Multi-Agent Debate Structures in Legal Reasoning10 Jul 2026
- 2026REGREACT: Self-Correcting Multi-Agent Pipelines for Structured Regulatory Information Extraction13 Apr 2026
- 2026RCBSF: A Multi-Agent Framework for Automated Contract Revision via Stackelberg Game12 Apr 2026
- 2025Debate-Feedback: A Multi-Agent Framework for Efficient Legal Judgment Prediction7 Apr 2025
- 2024AgentsCourt: Building Judicial Decision-Making Agents with Court Debate Simulation and Legal Knowledge Augmentation5 Mar 2024
- 2025Benchmarking Multi-Step Legal Reasoning and Analyzing Chain-of-Thought Effects in Large Language Modelscited by 9
- 2026From Query to Counsel: Structured Reasoning with a Multi-Agent Framework and Dataset for Legal Consultationcited by 3
- 2026SteuerLLM: Local specialized large language model for German tax law analysiscited by 1
- 2026From Entropy to Calibrated Uncertainty: Training Language Models to Reason About Uncertaintycited by 1
- 2026From Query to Counsel: Structured Reasoning with a Multi-Agent Framework and Dataset for Legal Consultation12 Apr 2026
- 2026From Entropy to Calibrated Uncertainty: Training Language Models to Reason About Uncertainty6 Mar 2026
- 2026SteuerLLM: Local specialized large language model for German tax law analysis11 Feb 2026
- 2025Benchmarking Multi-Step Legal Reasoning and Analyzing Chain-of-Thought Effects in Large Language Models11 Nov 2025
- 2025LegalRAG: A Hybrid RAG System for Multilingual Legal Information Retrievalcited by 5
- 2025Cross-Document Topic-Aligned Chunking for Retrieval-Augmented Generationcited by 1
- 2026Automated Regulatory Compliance Question Answering in Financial Services with Domain-Adapted Retrieval-Augmented Generationcited by 0
- 2026Automated Regulatory Compliance Question Answering in Financial Services with Domain-Adapted Retrieval-Augmented Generation24 Sep 2026
- 2025Cross-Document Topic-Aligned Chunking for Retrieval-Augmented Generation8 Nov 2025
- 2025LegalRAG: A Hybrid RAG System for Multilingual Legal Information Retrieval19 Apr 2025
- 2021LexGLUE: A Benchmark Dataset for Legal Language Understanding in Englishcited by 302
- 2021CUAD: An Expert-Annotated NLP Dataset for Legal Contract Reviewcited by 232
- 2021When Does Pretraining Help? Assessing Self-Supervised Learning for Law and the CaseHOLD Datasetcited by 199
- 2023Large Language Models in Law: A Surveycited by 128
- 2023DISC-LawLLM: Fine-tuning Large Language Models for Intelligent Legal Servicescited by 117
- 2021Lawformer: A Pre-trained Language Model for Chinese Legal Long Documentscited by 115
- 2021MultiEURLEX -- A multi-lingual and multi-label legal document classification dataset for zero-shot cross-lingual transfercited by 89
- 2021Paragraph-level Rationale Extraction through Regularization: A case study on European Court of Human Rights Casescited by 77
- 2023LEXTREME: A Multi-Lingual and Multi-Task Benchmark for the Legal Domaincited by 68
- 2021Swiss-Judgment-Prediction: A Multilingual Legal Judgment Prediction Benchmarkcited by 60
- 2023Precedent-Enhanced Legal Judgment Prediction with LLM and Domain-Model Collaborationcited by 52
- 2022A Survey on Legal Judgment Prediction: Datasets, Metrics, Models and Challengescited by 50
12 most cited of 113 All 113 (JSON)
- 2026ViLegalExpert: A Large-Scale Benchmark for Vietnamese Legal Retrieval and Question Answering from Real-World Consultations30 Sep 2026
- 2026An Instrument to Evaluate Governance Proposals: AI Policy Analysis at Scale30 Jul 2026
- 2026Constraint-Aware Hierarchical Search for Regulation-Driven Fine-Grained Classification12 Jul 2026
- 2026Legal Domain Adaptation of Modern BERT Models26 Jun 2026
- 2026Traceable by Design: An LLM Pipeline and Dashboard for EU Regulatory Consultation Analysis29 May 2026
- 2026The Cases LJP Never Sees: Prosecution Decision Prediction for More Complete Criminal Liability Assessment27 May 2026
- 2026MAP-Law: Coverage-Driven Retrieval Control for Multi-Turn Legal Consultation2 May 2026
- 2026ReLeVAnT: Relevance Lexical Vectors for Accurate Legal Text Classification24 Apr 2026
- 2026The Conundrum of Trustworthy Research on Attacking Personally Identifiable Information Removal Techniques9 Mar 2026
- 2026A Study on Building Efficient Zero-Shot Relation Extraction Models1 Mar 2026
- 2026Knowledge Augmented Entity and Relation Extraction for Legal Documents with Hypergraph Neural Network9 Feb 2026
- 2026Mecellem Models: Turkish Models Trained from Scratch and Continually Pre-trained for the Legal Domain22 Jan 2026
12 newest of 113 All 113 (JSON)