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ANALISIS HIERARCHICAL CLUSTERING (SINGLE LINKAGE) DAN K-MEDOIDS PADA DATA PENGHASILAN DAN DEMOGRAFI AREA KOMUNITAS CHICAGO salsa, Salsadilla Azizi Firda; Haikal Agung Widiyanto; Regina Adelisa; Etis Sunandi
Jurnal Fourier Vol. 14 No. 2 (2025)
Publisher : Program Studi Matematika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/fourier.2025.142.68-79

Abstract

Penelitian ini menganalisis metode Hierarchical Clustering Single Linkage dan K-Medoids dalam mengelompokkan data pendapatan dan demografi di Chicago. Dengan menggunakan data sekunder dari situs Kaggle, penelitian ini mengelompokkan 77 komunitas area berdasarkan kesamaan karakteristik sosial dan ekonomi. Hasil analisis dengan metode Hierarchical Clustering Single Linkage menunjukkan bahwa terdapat satu komunitas area yang terpisah dalam klaster kedua, sementara sisanya tergabung dalam satu klaster utama. Sebaliknya, metode K-Medoids menghasilkan dua klaster yang lebih seimbang dalam distribusi datanya. Berdasarkan visualisasi clustering, metode K-Medoids dianggap lebih baik karena mampu membagi data secara lebih seimbang. Namun, jika ditinjau dari nilai Silhouette Score dan Dunn Index, metode Hierarchical Clustering Single Linkage lebih unggul karena memiliki nilai yang lebih tinggi, menunjukkan fragmentasi klaster yang lebih jelas. Dengan demikian, pemilihan metode terbaik bergantung pada tujuan analisis, di mana K-Medoids lebih sesuai untuk interpretasi distribusi data yang lebih merata, sedangkan Hierarchical Clustering Single Linkage lebih optimal dalam kriteria klaster yang jelas.   This study analyzes the Hierarchical Clustering Single Linkage and K-Medoids methods in clustering income and demographic data of communities in Chicago. Using secondary data from the Kaggle website, this study clusters 77 community areas based on similarities in social and economic characteristics. The analysis using the Hierarchical Clustering Single Linkage method reveals that one community area is isolated in the second cluster, while the rest are grouped into a single main cluster. In contrast, the K-Medoids method produces two clusters with a more balanced distribution. Based on clustering visualization, the K-Medoids method is considered superior as it provides a more evenly distributed classification. However, when evaluated using the Silhouette Score and Dunn Index, the Hierarchical Clustering Single Linkage method outperforms K-Medoids due to its higher values, indicating clearer cluster separation. Thus, the choice of the best method depends on the analytical objective, where K-Medoids is more suitable for interpreting a more balanced data distribution, while Hierarchical Clustering Single Linkage is optimal for achieving distinct cluster separation.
Analysis of Effective Policy Strategies to Address Multidimensional Stunting Using the Biplot Method in Bengkulu Province Regina Adelisa; Vivi Elvira Sahputri Syah; Gihon Nakata Silaen; Firdaus; Fahrulriza, Teuku; Fajariyanto, Eko; Pratama, Novrian
Journal of Statistics and Data Science Vol. 4 No. 2 (2025)
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jsds.v4i2.45684

Abstract

This study aims to analyze the factors contributing to stunting in Bengkulu Province. The method used is biplot analysis, by reducing the Principal Component Analysis (PCA) dimensions into two components. A quantitative approach was employed, involving ten variables representing health, nutrition, education, housing, food security, and social protection factors. The results indicate that Bengkulu City has characteristics that are significantly different from other regencies. The key contributing factors include limited access to basic health services (particularly the availability of skilled birth attendants and immunization coverage), high levels of food insecurity, low access to proper sanitation and safe drinking water, limited practice of exclusive breastfeeding, and low utilization of government assistance programs such as BPJS Kesehatan (National Health Insurance) and KPS/KKS (Social Welfare Cards). It is expected that the findings of this study can provide valuable insights and contribute to efforts in reducing the prevalence of stunting in Bengkulu Province.