So sánh phương pháp

	Phân tích cụm	Mở rộng quy mô đa chiều (MDS)
Lĩnh vực	Thống kê	Thống kê
Họ	Latent structure	Latent structure
Năm ra đời	1939–1967	1952–1964
Người khởi xướng	Robert C. Tryon (early development); Ward (1963) for hierarchical; MacQueen (1967) for k-means	Warren S. Torgerson (metric MDS, 1952); Joseph B. Kruskal (non-metric MDS, 1964)
Loại	Unsupervised classification / grouping	Dimensionality reduction / visualization
Công trình gốc	Everitt, B. S., Landau, S., Leese, M. & Stahl, D. (2011). Cluster Analysis (5th ed.). Wiley. ISBN: 978-0470749913	Kruskal, J. B. (1964). Multidimensional scaling by optimizing goodness of fit to a nonmetric hypothesis. Psychometrika, 29(1), 1–27.
Tên gọi khác	clustering, unsupervised classification, data clustering, numerical taxonomy	MDS, metric MDS, non-metric MDS, proximity scaling
Liên quan	5	5
Tóm tắt	Cluster analysis is a family of unsupervised multivariate techniques that partition a set of objects or observations into internally homogeneous, mutually distinct groups — clusters — based on measured characteristics, without any prior knowledge of group membership. It is widely used in market segmentation, bioinformatics, psychology, and social science to reveal natural groupings in data.	Multidimensional scaling maps objects described only by pairwise similarities or dissimilarities into a low-dimensional geometric space so that distances in that space reflect the original proximity structure as faithfully as possible. It is widely used to visualize the hidden structure of psychological, social, and behavioral data.