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Ritzkal, Ritzkal
Universitas Ibn Khaldun Bogor
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Journal : Indonesian Applied Research Computing and Informatics

 1 
Improving Thesis Title Classification Accuracy Using Ensemble Classifier and Modified Chi-Square Feature Selection Method Ritzkal; Wahyu Tisno Atmojo; Panji Novantara; Sabir Rosidin; Ahmad Dedi Jubaedi; Enggar Novianto
Indonesian Applied Research Computing and Informatics Vol. 1 No. 1: July (2025)
Publisher : PT. Teras Digital Nusantara

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Abstract

Text classification of academic documents, particularly thesis titles, poses challenges due to high dimensionality, sparsity, and topic heterogeneity. Conventional feature selection techniques, such as the standard Chi-Square, often fall short in capturing discriminative features effectively. This research aims to enhance classification accuracy by proposing a Modified Chi-Square feature selection method that integrates term frequency and class distribution information. The selected features are then classified using ensemble decision tree algorithms, including Random Forest, Gradient Boosting, and XGBoost. Experiments were conducted on a labeled dataset of thesis titles using TF-IDF for vector representation. Evaluation metrics such as accuracy, precision, recall, F1-score, and AUC were used to assess model performance. The results showed that the combination of Modified Chi-Square and XGBoost outperformed other models, achieving the highest accuracy of 93.8% and an AUC of 0.94. These findings demonstrate that the integration of advanced feature selection and ensemble learning techniques can significantly improve academic text classification performance, providing valuable implications for the development of intelligent digital repositories and recommendation systems.
Co-Authors .S.T., M.Kom., Suhadi Abdul Karim Abdul Karim Abdul Karim Halim Abdul Khayr Abdul Rahman Acep Ansor Achmad Faris Nasyarudin Ade Hendrawan Adhi Prakosa, Bayu Adhi Prakoso, Bayu Afif Rafyan Ahmad Dedi Jubaedi Ahmad Suhaedi Ahya Ibadina Syahida Akhmad Abdul Aziz Akrom, Ahmad Al Ikhsan, Safaruddin Hidayat Al-Wahid, M. Azhar Algista, Grevin Dionaldy Alief Juan Aprian Alzami, Farrikh Amalia, Nurul Reski Aminudin Aminudin Anak Agung Gede Sugianthara Anggra Triawan Apip Supriana Ariagi Juliano Arief Goeritno Arif Sulistio Arthur Dida Batistuta Asep Ramdhani M Asep Sumantri Astuti, Nuraeni Puji Ayumi Johan Ayumi Johan Azhar Al Wahid Azhar Al-Wahid Bahagia Bahagia Bahagia Bahagia Batistuta, Arthur Dida Bayu Adhi Prakosa Bayu Adhi Prakosa Cantika, Melodia Chaisar Putra, Ivanna Chayati, Nurul Dahlia Widhyaestoeti Dani Darmawan Dede Sunardi Dedi Setiadi Dewi Primasari Dewi, Kalih Puspita Dhimas Bagus Adi Saputro Dian Anwar Dian Wulandari Dicky Septian Firdaus Diki Rahsidin Dwi Puji Prabowo, Dwi Puji Ebim Fatur Rohman Eko Hadi Purwanto Enggar Novianto Engkos Supriatna Enomi Muhamad Giri Salako Fadly Cahya Ramadhan Febby Hendrian Febby Hendrian Fety Fatimah Fikriyadi Fikriyadi Fitrah Satrya Fajar Kusumah Fitria Rachmawati Freza Riana Gani Fajar Kusuma, Mohamad Ginanjar, Hendra Grevin Dionaldy Algista Hambal Azhari, Muhammad Hariyanto, M Wujut Hendrawan, A. Hendri Hendrian, Febby Hermawan, Dicky Hersanto Fajri Hurriyaturrohman Hurriyaturrohman Ika Novita Dewi Indriyawati Indriyawati Intan Kamilah Joniwarta Juhariansyah, Juhariansyah Juliano, Ariagi Kamaludin Mubarok, Muhamad Karbella, Mutiara Kodarsyah Kodarsyah Kodarsyah Leni Muniroh Luluk Dianarini M Wujut Hariyanto M. Azhar Al-Wahid M. Imam Sundarta M. Khairun Nur Al Fadjri Maulana, Kevin Megantara, Rama Aria Meiriestiani, Shania Moh Risnandar Moh Subchan Muhamad Fariz Syarif Muhamad Lutfi Muhammad Fauzan Adhima Muhammad Khaerudin Muhammad Shiddiq Ilham Noor Muniroh, Leni Muniroh, Leny Nadhif, Muhammad Naufal Agung Pambudi Noor, Muhammad Shiddiq Ilham Noor, Zakky Muhammad Nuraeni Puji Astuti Nuraeni Puji Astuti P, Eko Hadi P, Eko Hadi Pahri Muhammad Kasypurohman Panji Novantara Prakosa, Bayu Adhi Prayoga Aldi Kurniawan Predyus Fan Suhery Priatna , Wowon Puri Sulistiyawati Puspa Putri Amalia Putra Pratama, Saga Eka Rahman, Randa Rendi Juhar Maulana Rezi Setria Ricardus Anggi Pramunendar Ridwan Kurniawan Rimun Wibowo Rimun Wibowo Rimun Wibowo, Rimun Rizky Amalia Roy Waluyo Rudi Hartono Rudi Irawan Rulhendri Rulhendri Sabir Rosidin Salati Asmahasanah SANTI LISNAWATI Sasono Wibowo Siswanti, Tiwi Siti Khodijah Parinduri Siti Patimah Siti Rahma Bahrain Subchan, Moh Suhartono Suhartono Syafrial Syafrial Syaiful . Syaiful Syaiful Syaiful Syaiful Titing Suharti Tiwi Siswanti Triansyah, Muhammad Bugi Triwoelandari, Retno Wahid, Azhar Al Wahyu Tisno Atmojo Willy Mandela Willy Mandela Yoga Permana Yophyana Firman Hidayat Yuggo Afrianto Zakky Muhammad Noor Zakky Muhammad Noor Zakky Muhammad Noor Zumhur Alamin