2026. Analisis Perbandingan Linkage Agglomerative Hierarchical Clustering Peningkatan Strategi Pemasaran Galeri Ulos Sianipar. JOURNAL OF SCIENCE AND SOCIAL RESEARCH. 9, 4 (Jul. 2026), 5418 – 5429. DOI:https://doi.org/10.54314/jssr.v9i4.6666.