Claim Missing Document
Check
Articles

Found 2 Documents
Search

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.
Perencanaan Strategis untuk Peningkatan Kualitas di Sekolah Menengah Atas Negeri: Pendekatan Matriks SWOT, IFE–EFE–IE di SMAN 2 Tambun Selatan Fakhruddin Ilyasa; Hilmana Radhia Putera; Harditriyono Putra; Nanang Alamsyah
Journal of Optimization System and Ergonomy Implementation Vol 4 No 01 (2026): Journal of Optimization System and Ergonomy Implementation
Publisher : Program Studi Teknik Industri S-1, Fakultas Teknik UPN Veteran Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54378/joseon.v4i01.15340

Abstract

This study aims to formulate a strategic plan for quality improvement at SMAN 2 Tambun Selatan. A qualitative descriptive method with a case study approach was applied; primary data were collected through interviews, observation, and documentation, while secondary data came from school reports and relevant literature, with validity maintained through source triangulation. Data were analyzed using the IFE, EFE, and IE Matrices and SWOT analysis, with factor weights and ratings based on informant judgment. The IFE score of 2,65 indicates a moderately strong internal condition, while the EFE score of 3,50 indicates a high capacity to respond to external factors, although the opportunity (1,75) and threat (1,74) scores are nearly balanced. The IE Matrix places the school in Cell II (growth and build), and the SWOT analysis positions it in Quadrant I (S–W = 0,93; O–T = 0,01), an aggressive, growth-oriented position. Accordingly, the SO (Strength–Opportunity) strategy is prioritized, leveraging teacher quality and learning facilities to capture opportunities through digital-based learning, supported by WO, ST, and WT strategies. This study contributes an application of the integrated IFE–EFE–IE–SWOT framework to a public high school as an evidence-based reference for sustainable school quality improvement.