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Penerapan data mining menggunakan algoritma C4.5 dalam prediksi penyakit angin duduk Salman Alfaridzi; Agung Nugroho; Muhammad Rizki Sani
Jurnal Sistem Informasi Vol 13, No 2 (2021)
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3056.06 KB) | DOI: 10.36706/jsi.v13i2.15638

Abstract

ABSTRAKPenyakit angin duduk (Angina Pectoris) merupakan penyakit yang terjadi karena gangguan pada aliran darah menuju jaringan otot jantung yang menyebabkan terjadinya nyeri pada dada. Angin duduk terjadi karena adanya penyempitan pembuluh coroner yang menyebabkan suplai oksigen untuk otot jantung mengalami gangguan sehingga jantung tidak dapat memompa darah dengan maksimal. Kurangnya pengetahuan masyarakat dalam mendeteksi gejala penyakit ini maka dengan memanfaatkan data tersebut penulis ingin menerapkan salah satu teknik data mining dalam melakukan prediksi atau mendiagnosis penyakit angin duduk (angina pectoris). Metode yang digunakan adalah Algoritma C4.5 dan Particle Swarm Optimization (PSO) dengan alat bantu RapidMiner dengan menggunakan sebanyak 200 data. Hasil analisis menunjukkan bahwa gejala kolestrol, diabetes, hipertensi, obesitas dan merokok bisa menjadi indikator untuk mendiagnosis penyakit angin duduk (angina pectoris). Hasil nilai yang didapatkan dari penelitian ini yaitu nilai Accuracy yang didapatkan meningkat sebanyak 7,5% dari 76,50% menjadi 84,00%, nilai Precision yang didapatkan meningkat sebanyak 7,64% dari 80,50% menjadi 88,14%, dan nilai Recall yang didapatkan meningkat sebanyak 9% dari 72,00% menjadi 81,00%. Kata Kunci: Data Mining, Angin Duduk, Algoritma C4.5, Particle Swarm Optimization, RapidMiner ABSTRACKSitting wind disease (Angina Pectoris) is a disease that occurs due to disruptions in blood flow to heart muscle tissue that causes chest pain. Wind sitting occurs due to a narrowing of the coroner vessels that cause the oxygen supply to the heart muscle to be disrupted so that the heart cannot pump blood optimally. Lack of public knowledge in detecting the symptoms of this disease then by utilizing the data the author wants to apply one of the data mining techniques in predicting or diagnosing sitting wind disease (angina pectoris). The methods used are Algorithm C4.5 and Particle Swarm Optimization (PSO) with RapidMiner tools using as much as 200 data. The results of the analysis showed that the symptoms of cholesterol, diabetes, hypertension, obesity and smoking could be indicators for diagnosing sitting wind disease (angina pectoris). The results of the value obtained from this study are that the accuracy value obtained increased by 7.5% from 76.50% to 84.00%, the precision value obtained increased by 7.64% from 80.50% to 88.14%, and the recall value obtained increased by 9% from 72.00% to 81.00%. Kata Kunci: Data Mining, Sitting Wind, C4.5 Algorithm, Particle Swarm Optimization, RapidMiner.
Analysis and Handling of STA 1+325 SD 1+475 Embankments in the Construction of the IKN Toll Road, Balang Island Bridge Segment – Sp. Riko Marnida Aryani; Toto Mochamad Taufik; Salman Alfaridzi
Journal of Engineering, Electrical and Informatics Vol. 5 No. 3 (2025): October: Journal of Engineering, Electrical and Informatics
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jeei.v5i3.5361

Abstract

The construction of the IKN Toll Road on the Balang Island Bridge – Sp. Riko segment serves as a strategic infrastructure project aimed at enhancing connectivity and accelerating regional development in the Indonesian Capital City area. However, within the STA 1+325 to STA 1+475 section, complex geotechnical challenges were identified due to the subgrade’s low bearing capacity and high consolidation potential. These conditions threaten the embankment’s stability, which could affect construction quality and long-term performance. This study analyzes the subgrade characteristics, evaluates embankment stability, and proposes effective improvement methods based on geotechnical design standards. Field investigations, including sondir testing, soil laboratory analyses, and numerical simulations using PLAXIS finite element software, were conducted. The analysis involved assessing bearing capacity, consolidation settlement, and slope stability under both normal and seismic conditions. The selected improvement method—subgrade replacement with a 2.0-meter-thick material—successfully increased the safety factor to 1.715 under service conditions and 1.258 under earthquake conditions, while reducing potential settlement to acceptable limits. These results demonstrate that the replacement method effectively enhances embankment stability and ground performance. Hence, this technique is recommended as a reliable geotechnical solution for toll road and other infrastructure projects facing similar subgrade challenges.