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All Journal Jurnal Transformatika Jurnal Abdi Insani Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Intelligent Computing and Health Informatics (JICHI) Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Jurnal Pengabdian Masyarakat Waradin Jurnal Sains dan Ilmu Terapan Journal of Data Insights International Journal of Information Engineering and Science
Basirudin Ansor
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Journal : Jurnal Transformatika

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Boosting Performance Klasifikasi kNN Customer Loyalty dengan Chi-Square dan Information Gain Mutiarachim, Atika; Fikriah, Fari Katul; Ansor, Basirudin; Ramdani, Aditya Putra
Jurnal Transformatika Vol. 22 No. 2 (2025): January 2025
Publisher : Jurusan Teknologi Informasi Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/6wgy1097

Abstract

Understanding customer purchasing behavior is essential for predicting customer loyalty, which directly impacts a company's long-term success. This research aims to determine the effect of chi-square and information gain feature selection in optimizing customer loyalty classification performance, compared to pure kNN. Using a public customer purchasing behavior dataset from Kaggle, containing 10,000 data, 12 attributes with loyalty_status as the label (Gold, Regular, Silver). Evaluating performance by accuracy, kappa, classification error, recall, precision, and RMSE. The highest accuracy 91.99% was obtained by kNN k=3 with information gain, kappa 0.844, precision 95.44%, recall 86.30%, with the lowest classification error 8.01% and the second lowest RMSE 0.245, after kNN k=3 with chi-square. Results show that feature selection has a positive impact on classification, increasing accuracy and reducing errors, with the combination of the kNN k=3 method and information gain proving successful in obtaining high accuracy in classifying customer loyalty.
Co-Authors Achmad Solichan Aditya Putra Ramdani Al Amin, Muhammad Zainudin Amin, Muhammad Zainudin Al Auliya Rohman Riquelme Al Ubaidah Devina Puspa Wulandari DEWI RAHMAWATI Dhendra Marutho Diaz Aditya Edy Winarno Fahri Fahri Fari Katul Fikriah Febyliana, Eva Karima Elsami Khaira, Mulil Kilala Mahadewi Mahadewi, Kilala Muchamad Faris Chakim Mulil Khaira Mutiarachim, Atika Naimatul Husna Nova Christina Sari Puterizahra, Arviza