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AI-Powered Interactive Legal Role-Playing Tool for Courtroom Advocacy Training

Year: 2026

Type: conference-paper

Abstract: This paper presents an AI-powered interactive legal role-playing tool designed to simulate courtroom advocacy while continuously evaluating the legal quality of learner arguments. The system implements a two-stage Fast Brain and Smart Brain audit pipeline, where a fine-tuned BERT-based model assesses legal density and Gemini generates plain-English explanatory feedback. The platform generates Sri Lankan courtroom scenarios, manages five AI personas, and maintains autonomous dialogue through a heartbeat-driven engine. Model B achieves 98.28% accuracy and AUC-ROC of 0.9951. A reward-based response selection loop produces a 29.5% score uplift by selecting the highest-scoring of three generated candidates.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.20752812

Authors: Majuwana Gamage, Janith Viranga, Dias, Sumudu Deshan, Wijesinghe, K.T. Himaya, Muthunayaka, A. Kamesh Dilshan, Yapa Abeywardena, Kavinga, Kodagoda, Gamhewage Nuwan

Institution: Sri Lanka Institute of Information Technology

Language: English

Topic: Artificial Intelligence in Law

Subfield: Political Science and International Relations

Field: Social Sciences

Domain: Social Sciences

SDG: Peace, justice, and strong institutions

Open Access status: green

OpenAlex ID: W7165174154

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