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All Journal JOURNAL OF SCIENCE AND SOCIAL RESEARCH Journal of Algorithmic Digital Engineering and Networks
Bunga Apriana Gultom
Universitas Katolik Santo Thomas
Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Social Sciences

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K-Medoids Robustness to Outliers in Management Data Bunga Apriana Gultom; Fanni Maria Dortua Tampubolon Tampubolon; Theresia SU Tanjung Tanjung
JADEN : Journal of Algorithmic Digital Engineering and Networks Vol. 1 No. 2 (2026): The Journal of Algorithmic Digital Engineering and Networks
Publisher : Cv. Data Sinergi Digital

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65853/jaden.v1i2.123

Abstract

This study examines the robustness of the K-Medoids algorithm to the presence of outliers in management data derived from Airbnb property listings, focusing on price and review rating attributes as key indicators in market segmentation and managerial decision-making. The increasing use of data from digital platforms is often accompanied by the emergence of extreme values that have the potential to disrupt the cluster structure and reduce the reliability of the analysis results. Therefore, a clustering method is needed that is able to maintain the stability and consistency of results even though the data contains outliers. This study uses a quantitative and experimental approach based on secondary data, where the implementation of the K-Medoids algorithm and visualization of clustering results are carried out using Python programming, while manual calculations based on Excel spreadsheets are used as a means of conceptual validation of the medoid selection process and distance measurement. The analysis is carried out by comparing the cluster results before and after the presence of outliers using the Manhattan distance metric and evaluating the total cost function at each iteration. The results show that although extreme values in the price attribute cause a wider spread in the data, the cluster structure and medoid positions remain relatively stable. The resulting clusters also retain clear managerial significance, grouping properties into economy, regular, and premium segments, thus remaining relevant to support pricing strategies, service differentiation, and reputation management.
RANCANG BANGUN SISTEM INFORMASI MARKET PLACE PRODUK MAGGOT BERBASIS WEB Bunga Apriana Gultom; Zekson Arizona Matondang; Lamhot Sitorus; Sorang Pakpahan
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol. 9 No. 4 (2026): August 2026 (1)
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v9i4.7017

Abstract

Abstrak: Perkembangan di bidang pemasaran digital memberikan kesempatan bagi para pelaku usaha maggot untuk memperluas cakupan pasar serta meningkatkan kelancaran proses transaksi. Namun, pemasaran produk maggot masih menghadapi beberapa hambatan, seperti keterbatasan jangkauan pasar, kesulitan dalam menyampaikan informasi mengenai produk, serta tantangan dalam mengintegrasikan proses transaksi. Penelitian ini bertujuan untuk merancang dan mengembangkan Sistem Informasi Marketplace Produk Maggot berbasis web yang mendukung berbagai kegiatan seperti pemasaran, penyediaan informasi terkait produk maggot, proses transaksi, serta penyampaian edukasi mengenai manfaat maggot dan cara pengelolaan sampah organik. Pengumpulan data dilakukan dengan cara observasi, wawancara, dan penyusunan dokumentasi.Sementara itu, pengembangan sistem dilakukan menggunakan metode Rapid Application Development (RAD) yang terdiri dari empat fase, yaitu Requirements Planning, User Design, Construction, dan Cutover. Sistem ini dibangun dengan menggunakan bahasa pemrograman PHP dan database MySQL, serta memiliki tiga peran pengguna yang berbeda, yaitu Admin, Petani Maggot, dan Masyarakat. Hasil penelitian berupa sistem yang memiliki fitur untuk mengelola produk, melakukan pembelian produk, melakukan transaksi sampah organik, memberikan edukasi, serta menghasilkan laporan. Uji coba dengan metode Black-Box Testing menunjukkan bahwa semua fungsi yang diuji berjalan sesuai dengan kebutuhan yang ditetapkan. Sistem yang dibuat bisa digunakan   sebagai   sarana   terpadu   untuk   membantu  promosi dan pembelian produk maggot, serta mengelola informasi mengenai maggot dan limbah organik.
Co-Authors Fanni Maria Dortua Tampubolon Tampubolon Matondang, Zekson Arizona Sitorus, Lamhot Sorang Pakpahan Theresia SU Tanjung Tanjung