手法を比較

	形式概念分析 (FCA)	階層的クラスタリング
分野	ソフトコンピューティング	機械学習
系統	Machine learning	Machine learning
提唱年	1982	1963
提唱者	Rudolf Wille & Bernhard Ganter	Ward, J. H.
種類	Lattice-based knowledge representation / concept mining	Unsupervised clustering (agglomerative)
原典	Wille, R. (1982). Restructuring lattice theory: an approach based on hierarchies of concepts. In I. Rival (Ed.), Ordered Sets (pp. 445–470). Reidel.	Ward, J. H. (1963). Hierarchical Grouping to Optimize an Objective Function. Journal of the American Statistical Association, 58(301), 236–244.
別名	FCA, concept lattice analysis, Galois lattice, biçimsel kavram analizi	Hiyerarşik Kümeleme, hiyerarşik kümeleme, agglomerative clustering, hierarchical agglomerative clustering
関連	3	4
概要	Formal concept analysis derives a hierarchy of concepts from a simple table of which objects have which attributes. Founded by Rudolf Wille in 1982 on lattice theory, it pairs each set of objects with the attributes they all share to form 'formal concepts', then organizes these into a concept lattice — a mathematically grounded, interpretable hierarchy used for knowledge discovery, ontology building, and explainable analysis of categorical data.	Hierarchical clustering is an unsupervised method that groups observations into nested clusters and draws the result as a dendrogram, so the number of clusters need not be fixed in advance. Its agglomerative form rests on the objective-function grouping criterion introduced by Joe Ward in 1963.