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Journal : journal of artificial intelligence and technology information

 1 
Automatic Dewey Decimal Classification of Indonesian Book Metadata Using IndoBERT with Weighted Loss and Context Enhancement Joko Purwanto; Fajar Mahardika; Adlan Nugroho
Journal of Artificial Intelligence and Technology Information (JAITI) Vol. 4 No. 2 (2026): Volume 4 Number 2 June 2026
Publisher : PT. Tech Cart Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58602/jaiti.v4i2.258

Abstract

This study proposes an automatic Dewey Decimal Classification (DDC) classification framework for Indonesian book metadata by integrating the IndoBERT model strengthened through weighted loss and context enhancement mechanisms. The current escalation of digital book collections poses significant challenges in classification efficiency and information retrieval, while the manual DDC classification process still relies on librarian expertise and is relatively time-consuming. The dataset used includes 2,516 book metadata obtained through the Google Books API and mapped into 14 DDC categories. The context enhancement strategy is implemented by integrating book titles and descriptions into a single text representation, while weighted cross-entropy loss, random oversampling, and simple data augmentation techniques are applied to address class imbalance issues. Model performance is evaluated based on accuracy, precision, recall, and F1-score metrics. Experimental results show that the proposed approach achieves an accuracy of 90.14% and a weighted F1-score of 90.15%, outperforming the baseline IndoBERT model, which only achieved an accuracy of 47.82% and a weighted F1-score of 47.06%. These findings indicate that the combination of weighted loss and contextual text representation can improve the semantic understanding of book metadata while reducing bias towards the majority class in Transformer-based DDC classification.
Co-Authors A.P, Fareza Maulana Abdillah, Muhammad Labib Abdul Hakim Prima Yuniarto Abdul Razak Naufal Abdul Razak Naufal Adam Prayogo Kuncoro Adelia Fitriani Adlan Nugroho Ahmad Zulfan Akrim Teguh Suseno Al’ Amin, M. Al’ Amin, M. Amin, M. Al' Anang Martoyo Andik Wijanarko, Andik Arie Aryanto Arif Nugroho, Adhitya Putra Aurora Dwi Khatulistian Aziz, Nadjwa Naela Bambang Sumantri, R Bagus Bambang Sumatri, Raden Bagus Desmana, Satriawan Dhanar Intan Surya Saputra Dhanar Intan Surya Saputra Dhanar Intan Surya Saputra Fazar Sidik Guntur Subari Hadi Jayusman Hasan Basri Hendra Marcos I Putu Dody Suarnatha Ihsan Alparisi Inayatul Inayah Inayatur Robaniyyah Isep Saepudin Jayusman, Hadi Joko Purwanto Joko Purwanto Kabul Agus Purwanto Kholil Mustofa Luhtitisari, Luhtitisari Lutfi Syafirullah M. Al ‘Amin M. Azwan Merani, Sania Galuh Miftahul Khoiri Mohammad AL AMIN Moniroh, Nur Mubarok, Hilmi Muhammad Ghofinda Prasetia Muhammad Nur Faiz Muhammad Sandi Muhammad Yusril Ihzam Muhammad, Kukuh Muin, Muhammad Abdul Muin Noviana Safira Nugroho, Adlan Nugroho, Suryo Nur Azizah Nur Muniroh Nurul Alfiah Pari, Riki Aldi Prasetyanti, Dwi Novia Puji Cahniya Sari Purba, Angga Maulana Rahmawan Bagus Trianto Ramadhani, Khalifah Brilianti Ratih Ratih ratih ratih Riyadi Purwanto Riyadi Purwanto Rizki Ripai Saepudin, Isep Samsuri Yahya Samsuri Yahya Setiawan, Endri Shandy, Sony Veri Sidik, Fazar Sitaresmi Wahyu Handani, Sitaresmi Wahyu Suhenda Suhenda Suhenda, Suhenda Suseno, Akrim Teguh Tundo, Tundo Widya Pratiwi Yahya, Samsuri