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Sipayung, Sardo Pardingotan
Universias Katolik Santo Thomas Medan Jl. Setiabudi No. 479 F Tanjungsari Medan
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Journal : jomlai journal of machine learning and artificial intelligence

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Student Grouping Based on Grades and Attendance Using K-Means Theresya Simanjuntak; Jelita Astrid Gulo; Sardo Pardingotan Sipayung
JOMLAI: Journal of Machine Learning and Artificial Intelligence Vol. 5 No. 1 (2026): Maret 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/jomlai.v5i1.7283

Abstract

Student grouping based on academic performance is needed to support decision-making in more targeted academic guidance programs. This research implemented K-Means Clustering algorithm to group students based on academic scores and attendance rates. The dataset consisted of 50 student samples with score and attendance percentage attributes ranging from 0-100. Optimal cluster determination used Elbow Method and Silhouette Score with K values varying from 2 to 6. Experimental results showed K=3 produced optimal separation with highest Silhouette Score of 0.72 and WCSS 8,230. Three clusters formed represented high-achieving students (30%), average-performing students (40%), and students requiring special attention (30%). The algorithm converged in average of 8-12 iterations with 90% consistency on multiple runs. Correlation analysis showed very strong relationship between scores and attendance (r=0.89). Interactive visualization system was developed using React.js and Recharts to facilitate result interpretation. This research provided practical contribution in form of clustering framework for early warning identification of at-risk students and academic intervention program recommendations.
Co-Authors Ade Linhar P Alex Rikki Andreas, Kevin Antonius Siagian, Novriadi Baehaqi Barus, Paskalia Br Batubara, Muhammad Iqbal Br Ginting, Anirma Kandida Cristina Situmorang Efendi, Syahril Fernando, Juniko Frans Steven Pakpahan Frans, Paulina Gorat Gaol, Sasmita Lumban Garingging, Cesia Trisani Saragih Ginting, Anirma Ginting, Anirma Kandinda Giovani, Aritonang Girsang, Jahanra Gracia Simatupang Gulo, Jelita Astrid Harianja, Andy Paul Hasugian , Paska Marto Hia, Hikmat Pengertian Hulu, Setiani Hutauruk, Amelia Sanna Maria Jelita Astrid Gulo Lahagu, Marlinus Lahagu, Nicolas Elsada Lase, Marsindra Yanti Limbeng, Yuni br Lubis, Maria Angelina Lumban Gaol, Fortina Lumbanbatu, Noperla Anjelisari LumbanBatu, Vio Br Maha, Yadi Limanta Mahyuddin K. M Nasution Manalu, Ester Manurung, Evaldo Manurung, Saut Maria Angelina Lubis Marmata, Sri Ulina Br Maruwahal Sijabat, Ramson Rikson Matondang, Zekson Aizona Meri Nova Marito Br Sipahutar Naibaho, Marcel Naibaho, Wirma Nainggolan, Kevin Marcho Napitupulu, Virzinia Nunes, Minaldinu Deyesus Panggabean, Jusnan Pasaribu, Adri Purba, Ade Purba, Jhonatan Purba, Marta Rahmawati Rajagukguk, Jonatan Carlos riang, rya Ricardo, Erich Ritonga, Margan Rizkiano Sagala, Lauren Patricia Sagala, Masdiana Saragih, Dea Ananda Sembiiring, Dia Alemisa br Sembiring, Boy Mountavani Sembiring, Brema Aprilta Sembiring, Dessianna Natalia Siagian, Novriadi Antonius Sianturi, Firman Torino SIBURIAN, MANANDA TURE Sihombing, Carlo Poda Boromeo Sihotang, Yuli Pitriani Br Silaban, Daniel Silalahi, Rasit Junaedi Simanjuntak, Richard Parlindungan Simanjuntak, Theresya Simbolon, Agustina Simbolon, Cantriya Simbolon, Daniel S. Simbolon, Yoel Sinaga, Elvis Lavenius sinaga, lotar mateus Sinaga, Rafael Grealdi Sirait, Juan Sebastian Siringoringo, Maysya Faiftin Sitanggang, Armando Agasi Sitanggang, Romualda Sitanggang, Roni Gabe Situmorang, Cristina Situmorang, Yudi Yohannes Sorang Pakpahan Surbakti, Efrans Tambunan, Dwito Julian Tambunan, Yosua Tampubolon, Albert Julio Tampubolon, Amsal Tarigan, Jenheri Rejeki Theresya Simanjuntak TONNI LIMBONG Tulus Pramita Sihaloho Zakarias Situmorang Zebua, Wilfred Raimond Zekson Matondang