Article Per Year (5 Year)
p-Index From 2021 - 2026
3.67
P-Index
This Author published in this journals
All Journal IJCCS (Indonesian Journal of Computing and Cybernetics Systems) Syntax Jurnal Informatika Sinkron : Jurnal dan Penelitian Teknik Informatika Jurnal Abdimas BSI: Jurnal Pengabdian Kepada Masyarakat JURNAL MEDIA INFORMATIKA BUDIDARMA Jurnal Pilar Nusa Mandiri Jurnal Sains dan Informatika Techno Nusa Mandiri : Journal of Computing and Information Technology IJIS - Indonesian Journal On Information System Jurnal Informatika Universitas Pamulang Jurnal Teknoinfo JURNAL TEKNOLOGI DAN OPEN SOURCE KOMPUTIKA - Jurnal Sistem Komputer INTI Nusa Mandiri JATI (Jurnal Mahasiswa Teknik Informatika) Journal of Applied Data Sciences Jurnal AbdiMas Nusa Mandiri Jurnal Responsif : Riset Sains dan Informatika Indonesian Journal of Networking and Security - IJNS JUSTIN (Jurnal Sistem dan Teknologi Informasi) Informatics and Computer Engineering Journal Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS Ladang Artikel Ilmu Komputer
Lilyani Asri Utami, Lilyani Asri
Universitas Nusa Mandiri
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Mathematics Physics Social Sciences Other

Published : 41 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 41 Documents
Search

 1   2   3   4   5 
A Hybrid TF-IDF and Knowledge Graph-Enhanced Retrieval-Augmented Generation Framework with Large Language Models for Domain-Aware Question Answering Utami, Lilyani Asri; Rachmi, Hilda; Hidayatulloh, Syarif
Journal of Applied Data Sciences Vol 7, No 2: May 2026
Publisher : Bright Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47738/jads.v7i2.1136

Abstract

This study aims to develop a domain-aware legal Question-Answering (QA) system tailored for Indonesia’s Micro, Small, and Medium Enterprises (MSMEs) by proposing a hybrid Retrieval-Augmented Generation (RAG) framework that integrates Term Frequency–Inverse Document Frequency (TF-IDF), Knowledge Graph (KG), and Large Language Model (LLM) components. In this framework, TF-IDF contributes by performing lexical-level retrieval to identify the most relevant documents based on keyword weighting; the KG enriches this retrieval by providing semantic relationships among legal entities, enabling deeper contextual understanding; and the LLM generates coherent responses conditioned on both lexical and semantically grounded evidence. Together, these components work synergistically to strengthen factual grounding during retrieval and improve contextual reasoning during generation. Methodologically, the system processes a curated dataset of 1,400 legal question–answer pairs collected from national legal repositories, including legislation, government regulations, and MSME digitalization guidelines. The process includes text preprocessing, keyword extraction using TF-IDF, semantic enrichment through a KG that maps legal entities and their relationships, and answer generation via an LLM powered by the RAG pipeline. The system was evaluated using Precision, Recall, F1-Score, Bilingual Evaluation Understudy (BLEU), and Recall-Oriented Understudy for Gisting Evaluation (ROUGE) metrics, validated by five legal experts. Results show an accuracy improvement from 76.5% to 83.5% after integrating KG, with Precision of 0.853, Recall of 0.877, and F1-Score of 0.865. The generative evaluation yielded a BLEU score of 0.9276 and ROUGE-L of 0.9301, indicating strong linguistic and semantic alignment between system outputs and expert-authored references. The study concludes that this approach offers a practical foundation for building AI-based legal assistance tools and highlights future opportunities for expansion to other legal domains and multilingual RAG applications.
Co-Authors ., Juariah Abda Abda ABDUL GANI Abdul Muid Ahmad Ishaq Alby Sukmana Benti Dewansyah Briantama, Hartomo David David Deni Anugrah Sahputra Dewi Anggraini Dewi, Akhiroh Dwiantoro, Tino Eka Rini Yulia Endang Pujiastuti Feby Karina Bintang Gustomi Arifin Harits Prastanu Herby Dreffar Praja Heru Susanto Hilda Rachmi Hylenarti Hertyana Ida Ayu Putu Sri Widnyani Kaffah Febriningrum Laela Kurniawati Laela Kurniawati, Laela Lia Mazia, Lia M. Rangga Ramadhan Saelan Marshel Christian Marsuyitno, Marsuyitno Oktaviana R, Shinta Pangestu, Aditiya Dwi Pebri Harianto Prasetyo, Reynaldi Dwi Ramdhani, Dani Regani Rahayu Sitanggang Rizal Nugraha Selviana, Elsa Dwi Siti Ernawati Siti Fauziah Siti Mariana Siti Nur Khasanah Siti Nurlela Sukmana, Alby Sukmawati Anggraeni Putri Sukmawati Anggraeni Putri, Sukmawati Anggraeni Suparni Suparni Suparni Suparni Syarif Hidayatulloh Tino Dwiantoro Windu Gata Wulan, Anggraeni Yuningsih, Pitri Dwi