Jurnal Komputer Indonesia
Vol. 5 No. 3 (2026): September

Implementation of XGBoost for Classifying Student Interest in Informatics at SMP Negeri 30 Bengkulu Selatan

Ocy Lara Putri (Universitas Dehasen Bengkulu)
Devi Sartika (Universitas Dehasen Bengkulu)
Dimas Aulia Trianggana (Universitas Dehasen Bengkulu)



Article Info

Publish Date
11 Sep 2026

Abstract

Student interest in Informatics is still commonly identified through teacher observation, creating a need for a more objective data-driven approach. This study develops an XGBoost classification model and explains the factors underlying its decisions using SHAP. A quantitative data-analytics design followed the CRISP-DM stages using 27 student records and seven features: assignment scores, daily tests, practical scores, midterm scores, final scores, attendance, and attitude. The dataset was split into 80% training and 20% testing data. On six held-out cases, the model correctly classified two students as Interested and four as Not Interested, producing 100% Accuracy, Precision, Recall, and F1-Score, with an AUC of 1.00. SHAP analysis identified daily-test scores as the strongest contributor (1.1179), followed by assignment, final-exam, practical, and midterm scores. These findings indicate that XGBoost combined with SHAP can support measurable and transparent identification of student interest, although the limited dataset requires caution when generalizing the performance.

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Journal Info

Abbrev

JKI

Publisher

Subject

Computer Science & IT

Description

Jurnal Komputer Indonesia (JKI) diterbitkan oleh Universitas dehasen Bengkulu. JKI memuat naskah hasil-hasil penelitian di bidang Ilmu Komputer. JKI berkomitmen untuk memuat artikel berbahasa Indonesia yang berkualitas dan dapat menjadi rujukan utama para peneliti dalam bidang Ilmu Komputer. Ruang ...