Hybrid LexRank-LDA-MMR for Indonesian Text Summarization

Penulis

  • Nasrul Amin Muis Information Systems Study Program, Faculty of Computer Science, Amikom University Yogyakarta
  • Yoga Pristyanto Information Systems Study Program, Faculty of Computer Science, Amikom University Yogyakarta
  • Ika Nur Fajri Information Systems Study Program, Faculty of Computer Science, Amikom University Yogyakarta

DOI:

https://doi.org/10.25077/TEKNOSI.v12i1.2026.97-104

Kata Kunci:

Extractive Summarization, LexRank, LDA,, Hybrid Approach, ROUGE

Abstrak

The rapid growth of digital text information makes it crystal clear that there is a need for automated tools that summarize text for rapid retrieval. Extractive methods employed include LexRank, Latent Dirichlet Allocation (LDA), and Maximal Marginal Relevance (MMR), and the study aimed to enhance the quality of Indonesian text summaries beyond regular LexRank. In this study, the role of LexRank was to assist in selecting meaningful sentences that were centric to the center of the graphs, while the role of LDA was to ensure that the sentences were topically relevant. The strength of MMR lies in maintaining the document's relevance and diversity, thereby reducing redundancy in the summaries. Summaries from two publicly available datasets, IndoSum and Liputan6, containing texts in Bahasa Indonesia, were analyzed at 30% and 50% compression levels and graded using ROUGE (ROUGE-1, ROUGE-2, ROUGE-L F1) scores. Analysis of 5000 articles per dataset showed that implementing LexRank and LDA together with MMR resulted in a higher average ROUGE score than standard LexRank, irrespective of the set compression levels and across both datasets, demonstrating the approach's effectiveness in enhancing summary quality. The improvements recorded are most significant in ROUGE-1 and ROUGE-2, indicating that these combination approaches can produce more informative and relevant summaries while preserving sentence-level diversity, thereby deepening understanding of the information presented in the summary.

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Telah diserahkan

16-06-2025

Diterima

27-04-2026

Diterbitkan

05-05-2026

Cara Mengutip

[1]
N. A. Muis, Y. Pristyanto, dan I. N. Fajri, “Hybrid LexRank-LDA-MMR for Indonesian Text Summarization”, TEKNOSI, vol. 12, no. 1, hlm. 97–104, Mei 2026.

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