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Model Prediksi Harga Cabai Merah Besar Di Tingkat Produsen Periode 2022-2024 Dengan Metode Supervised Learning Menggunakan Orange Data Mining Montreano, Donny; Redian Wahyu Elanda; Harditriyono Putra
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 1 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i1.697

Abstract

Abstract. From the perspective of Micro, Small, and Medium Enterprises (MSMEs), fluctuations in raw material prices are highly concerning as they can significantly impact business stability. While MSMEs may tolerate price fluctuations to some extent, from an industrial engineering perspective, such a passive approach contradicts the principles of continuous improvement. This study seeks to predict the price of large red chili peppers using five regression models implemented through Orange Data Mining: Linear Regression, Support Vector Machine, Decision Tree, k-Nearest Neighbors (kNN), and Gradient Boosting. Due to the limited availability of daily data, particularly within a daily timeframe, the study utilized weekly data spanning three years. The results of the Test and Score evaluation shows Gradient Boosting as the best-performing model, achieving a Mean Absolute Percentage Error (MAPE) of 0.7%. However, the MAPE for predictions in January 2025 increased to 15.8%. This error is expected to decrease as more weekly data becomes available to mitigate the inaccuracies inherent in this model. Keywords: prediction, red chilli, regression, supervised learning , orange data mining. Abstrak. Dalam perspektif UMKM, fluktuasi harga bahan baku adalah suatu hal yang paling ditakuti karena berakibat pada ketahanan usaha yang menjadi tidak menentu. Pada suatu kondisi, fluktuasi harga dapat diterima para UMKM, namun dalam perspektif teknik industri, sikap UMKM tersebut tidak sesuai prinsip continuous improvement. Penelitian ini mencoba untuk memprediksi harga cabai merah besar dengan menggunakan 5 model regresi dibantu Orange Data Mining. Yaitu Linear Regression, Support Vector Machine, Tree, kNN, Gradient Boosting. Data yang diperlukan sebagian besar tidak tersedia, khususnya dalam kerangka waktu harian sehingga penelitian ini menggunakan data mingguan selama 3 tahun. Hasil Test and Score menunjukkan model Gradient Boost terpilih menjadi model terbaik dengan tingkat MAPE 0.7% namun MAPE pada tahap Prediction di bulan Januari 2025 menjadi 15.8%. Error tersebut akan berkurang ketika data mingguan sudah cukup banyak untuk menambal kesalahan yang dihasilkan model ini Kata kunci: prediksi, cabai merah, regression, supervised learning , orange data mining.
Strategi Pengendalian Antrean Tidak Teratur dalam Sistem Layanan Kantin Kampus Amenda Septiala Tarigan; Hilmana Radhia Putera; Redian Wahyu Elanda; Lilik Zulaihah
Jurnal Atma Inovasia Vol. 5 No. 6 (2025)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jai.v5i6.12472

Abstract

Campus canteens are essential facilities supporting academic activities. However, during peak hours, issues such as disorganized queues and delayed order deliveries frequently occur. These conditions lead to a decrease in customer satisfaction and service efficiency. This community service activity aims to develop a queue management strategy to improve service quality in campus canteens. The methods used include direct observation, socialization, and training for canteen staff, as well as the implementation of a simple order identification system. The socialization of the “numbered tags” queue system to the vendors has been carried out as part of the efforts to enhance service efficiency and organization. Preliminary evaluations indicate that this system has the potential to reduce customer waiting times and improve service efficiency. The finding suggests that a simple technology approach based on a numbered system can be an effective solution for addressing disorganized queues and improving the quality of canteen services in the future. This finding provides a foundation for canteen managers in other educational institutions to implement similar systems.