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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Proceeding of the Electrical Engineering Computer Science and Informatics Share : Journal of Service Learning
Leo Willyanto Santoso
Petra Christian University
Arts Humanities Computer Science & IT Electrical & Electronics Engineering Social Sciences

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Predicting student performance in higher education using multi-regression models Leo Willyanto Santoso; Yulia Yulia
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 18, No 3: June 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v18i3.14802

Abstract

Supporting the goal of higher education to produce graduation who will be a professional leader is a crucial. Most of universities implement intelligent information system (IIS) to support in achieving their vision and mission. One of the features of IIS is student performance prediction. By implementing data mining model in IIS, this feature could precisely predict the student’ grade for their enrolled subjects. Moreover, it can recognize at-risk students and allow top educational management to take educative interventions in order to succeed academically. In this research, multi-regression model was proposed to build model for every student. In our model, learning management system (LMS) activity logs were computed. Based on the testing result on big students datasets, courses, and activities indicates that these models could improve the accuracy of prediction model by over 15%.
Genetic Programming Approach for Classification Problem using GPU Leo Willyanto Santoso
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 7, No 2: EECSI 2020
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eecsi.v7.2039

Abstract

Genetic programming (GP) is a machine learning technique that is based on the evolution of computer programs using a genetic algorithm. Genetic programming have proven to be a good technique for solving data set classification problems but at high computational cost. The objectives of this research is to accelerate the execution of the classification algorithms by proposing a general model of execution in GPU of the adjustment function of the individuals of the population. The computation times of each of the phases of the evolutionary process and the operation of the model of parallel programming in GPU were studied. Genetic programming is interesting to parallelize from the perspective of evolving a population of individuals in parallel.
Digitalisasi Sistem Persediaan dan Penjualan Ramah Difabel pada UMKM Tiara Handycratf Juniarti Juniarti; Hendri Kwistianus; Leo Willyanto Santoso
Share: Journal of Service Learning Vol. 11 No. 1 (2025): FEBRUARY 2025
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/share.11.1.1-11

Abstract

Artikel ini membahas penyusunan dan implementasi sistem digitalisasi yang ramah difabel pada UMKM Tiara Handicraft, sebuah usaha kecil di Surabaya yang fokus pada pemberdayaan kaum difabel, terutama karyawan tunarungu. UMKM ini menghadapi berbagai tantangan dalam pengelolaan penjualan dan persediaan yang masih dilakukan secara manual, yang berisiko menimbulkan kesalahan pencatatan, ketidakefisienan, dan keterlambatan dalam memenuhi permintaan pasar. Sistem manual yang digunakan saat ini tidak mampu mengakomodasi kebutuhan khusus karyawan difabel, terutama tunarungu, yang menghadapi kesulitan dalam menjalankan tugas administratif secara efektif. Sebagai solusi, dirancang sistem digitalisasi berbasis teknologi yang dirancang secara inklusif untuk mendukung karyawan difabel. Sistem ini menawarkan antarmuka yang lebih visual dengan penggunaan ikon gambar dan warna, sehingga memudahkan karyawan tunarungu dalam mengoperasikan sistem tanpa terlalu bergantung pada teks. Proses perancangan sistem meliputi survei lapangan, analisis kebutuhan karyawan, dan perancangan prototipe yang disesuaikan dengan proses bisnis UMKM Tiara Handicraft. Setelah melalui proses persetujuan dengan pemilik, sistem dikembangkan dan diuji untuk memastikan fungsionalitasnya, mencakup pencatatan penjualan, persediaan, serta pelaporan penjualan dan stok secara real-time. Sistem ini dirancang agar mudah dioperasikan oleh karyawan dengan fitur-fitur seperti pemilihan barang berbasis gambar, pengurangan stok otomatis saat penjualan, serta laporan harian dan bulanan yang dapat diakses dengan cepat. Sistem telah dievaluasi oleh pemilik bai dan telah dilatihkan kepada karyawan. Karyawan dapat menggunakan sistem dengan mudah tanpa kesulitan, dan pemilik menyatakan bahwa sistem ini telah memenuhi kebutuhan operasional secara optimal.
Co-Authors Hendri Kwistianus Juniarti Juniarti Yulia Yulia