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All Journal Majalah Ilmiah METHODA
Sagala, Tamado Simon
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Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Medicine & Pharmacology Public Health

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Optimasi Algoritma Genetika pada Perbandingan ANN dan KNN untuk Klasifikasi Penyakit Jantung Zai, Andreas; Rambe, Lima Hartima; Putra, Reza Ananda; Rosnelly, Rika; Sagala, Tamado Simon; Jaya, Indra Kelana
Majalah Ilmiah METHODA Vol. 15 No. 1 (2025): Majalah Ilmiah METHODA
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/methoda.Vol15No1.pp10-23

Abstract

A comparative analysis of genetic algorithm optimization methods on the performance of Artificial Neural Network (ANN) and K-Nearest Neighbor (KNN) in heart disease classification shows significant results. The research used a heart disease dataset consisting of 303 samples with 14 attributes. Genetic algorithm optimization produced substantial performance improvements in both models. The optimized ANN model achieved 94.85% accuracy, 93.00% precision, 97.00% recall, and 97.00% ROC AUC, demonstrating excellence in positive case identification. Meanwhile, the optimized KNN model achieved 93.30% accuracy, 92.00% precision, 95.00% recall, and 96.77% ROC AUC, yielding more balanced performance. The genetic algorithm optimization method proves its effectiveness in improving heart disease classification accuracy, where ANN is optimal for applications requiring high sensitivity and KNN is more stable for small datasets.
Pengaruh Kepemimpinan serta Kompensasi terhadap Motivasi Atlet Esports Pelatda Provinsi Sumatera Utara Sagala, Tamado Simon
Majalah Ilmiah METHODA Vol. 14 No. 2 (2024): Majalah Ilmiah METHODA
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/methoda.Vol14No2.pp235-240

Abstract

Esports is an official sports branch in Indonesia, as stated in the results of the KONI National Working Meeting (RAKERNA) in 2020, which declared esports to be part of the prestigious sports branch. This is also in line with the establishment of the Indonesian Esports Association (PBESI) as the governing body of electronic sports under the National Sports Committee of Indonesia (KONI). Research results show that the t-value of both variables is below 0.005, and F calculated is greater than F table (570.063 > 2.91). It can be explained that leadership has a significant positive influence on the achievement motivation of esports athletes in the provincial training center (Pelatda) of North Sumatra. Compensation also has a significant positive influence on the achievement motivation of esports athletes in the provincial training center (Pelatda) of North Sumatra partially. Furthermore, it is found that both leadership and compensation have a significant positive influence on the achievement motivation of esports athletes in the provincial training center (Pelatda) of North Sumatra simultaneously.
Co-Authors Indra Kelana Jaya Putra, Reza Ananda Rambe, Lima Hartima Rika Rosnelly, Rika Zai, Andreas