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All Journal Jurnal Nasional Komputasi dan Teknologi Informasi EVOLUSI : Jurnal Sains dan Manajemen Infotekmesin Journal of Innovation Information Technology and Application (JINITA) Jurnal Matematika Integratif
Rostika Listyaningrum
Politeknik Negeri Cilacap
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Pemanfaatan Algoritma Random Forest Regression dalam Memprediksi Kepuasan Mahasiswa Terhadap Dosen Rostika Listyaningrum; Riyadi Purwanto; Dwi Novia Prasetyanti; Cahya Vikasari; Artdhita Fajar Pratiwi
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2808

Abstract

Student satisfaction with lecturers is a key indicator in assessing the quality of higher education. However, commonly used evaluation approaches remain largely descriptive and subjective, making them less effective in supporting sustainable quality improvement. Moreover, the comprehensive use of lecturer competency indicators in predictive models is still limited. This study addresses the gap by developing a student satisfaction prediction model using the Random Forest Regression algorithm, optimized through grid search and feature selection using the Recursive Feature Elimination (RFE) method combined with 5-fold cross-validation. Data were collected from the EDOM system of Politeknik Negeri Cilacap, involving 24 indicators based on national lecturer competency standards, and analyzed using R software. The best model was achieved with parameters mtry = 1 and ntree = 300, yielding RMSE = 0.0222, MAE = 0.0118, and R² = 0.9959. The three most influential indicators identified were structured assignments, diversity of teaching methods, and punctuality. These findings are expected to inform policies for improving the quality of higher education.
Co-Authors Abdul Rohman Supriyono Andesita Prihantara Annas Setiawan Prabowo Annisa Romadloni Ayu Pramita Betti Widianingsih Cahya Vikasari Cahya Vikasari Dodi Satriawan Dwi Novia Prasetyanti Dwi Novia Prasetyanti Fadhilla Hazrina Hariadi, Nora Ika Nur Afiati Isa Bahroni, Isa Kiki Ariyanti Sugeng Laura Sari Linda Perdana Wanti Lutfi Syafirullah Mahardika, Fajar Nur Wachid Adi Prasetya Nur Wahyu Rahadi Prih Diantono Abda'u Randi Afif Ratih Hafsarah Maharrani Riyadi Purwanto Riyadi Purwanto Sari, Eka Dyah Puspita