Pillars · applied research areas

From legal questions to outputs people can use.

Area 01

Digital Notary (Cyber Notary)

“How can deeds and notarial services be created, verified and stored electronically with legal certainty?”

MethodsFormal verification · e-signature standards · document provenance
Starting focusWorkflows for creating and verifying electronic deeds
OutputA verification framework and a document-checking prototype
Area 02

Industrial Relations Disputes

PartnerKemenaker RI

“How can rulings and labour regulation data help resolve disputes faster and more fairly?”

MethodsJudgement mining · legal NLP · case-outcome analysis
Starting focusIndustrial relations court rulings and labour regulations
OutputAn annotated ruling corpus and case-analysis tools
Related publicationsPublications for this area are in preparation.
Area 04

Court Rulings & Judgement

“What can machines learn from Indonesian court rulings, and how do we test it?”

MethodsInformation extraction · legal entailment · citation networks
Starting focusInformation extraction from Supreme Court rulings
OutputA structured rulings dataset and a legal-entailment benchmark
Foundation

Legal AI Foundations

Core research that supports all four areas. Every method is tested on Indonesian-language legal data before it is used in an applied area.

Legal reasoning

Modelling how norms, facts and rulings relate, including legal entailment and argumentation.

Related publicationsBOOK CHAPTER · 2019From Logic Programming to Machine Ethics

Trust & evaluation

Benchmarks, robustness tests and evaluation protocols so legal AI systems can be held accountable.

Related publicationsJOURNAL ARTICLE · 2025Explainable clustering: Methods, challenges, and future opportunities
Ground · Data & code

Research infrastructure

Reusable data and tooling for our team and the research community.

REG

Source register

A catalogue of primary and secondary legal sources with licensing status and coverage.

ANN

Annotation guides

Schemas and guidelines for annotating entities, relations and legal document structure.

DAT

Controlled datasets

Versioned corpora with clear test splits for fair experiments.

REP

Reproducibility packages

Code, configuration and results so others can repeat our experiments.

Open dataLexID: an Indonesian-language legal datasetOur datasets and code are available for research in the lab-lexin repository.Related publicationsJournal article · JIKI 2023LexID: The Metadata and Semantic Knowledge Graph Construction of Indonesian Legal Document
Fifth pillar

Bring your legal question to Lexin.

New research areas start with partners. If your institution has a legal problem that needs data and AI, let’s design it together.

Your area
01Research partnersInstitutions, firms or agencies that bring questions and data.
02Student fellowshipResearch and theses with the team in one of the areas.
03Visiting scholarsShort-term academic collaboration from other universities.