手法を比較

	不確実性下における白黒化重み関数に基づく分類：グレークラスタリング	ファジィC平均クラスタリング (FCM)
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	2010	1981
提唱者	Julong Deng; Sifeng Liu	Joseph Dunn; James Bezdek
種類	Whitenization-based soft clustering	Soft (fuzzy) partitional clustering
原典	Liu, S., & Lin, Y. (2010). Grey Systems: Theory and Applications. Springer. ISBN: 978-3-642-13937-6	Dunn, J. C. (1973). A fuzzy relative of the ISODATA process and its use in detecting compact well-separated clusters. Journal of Cybernetics, 3(3), 32–57.
別名	Grey Whitenization Weight Function Clustering, Grey Fixed-Weight Clustering, Grey Variable-Weight Clustering, Gri Kümeleme	FCM, fuzzy clustering, soft k-means, bulanık c-ortalama kümeleme
関連	2	3
概要	Grey Clustering is a classification method from grey systems theory that assigns objects to predefined grey classes using whitenization weight functions. Developed within the framework of Deng Julong's grey system theory and systematized by Sifeng Liu, it is particularly suited for situations involving small sample sizes, incomplete information, or uncertain data—conditions common in engineering assessments, environmental monitoring, and socioeconomic evaluation. The method quantifies how strongly each object belongs to each grey class and makes a crisp assignment based on maximum clustering coefficients.	Fuzzy C-Means is a soft clustering algorithm in which every data point belongs to every cluster with a graded membership between 0 and 1, rather than being assigned to exactly one cluster. Originated by Joseph Dunn in 1973 and generalized by James Bezdek in 1981, it minimizes a fuzzy-weighted within-cluster variance, making it well suited to data whose groups overlap or have no sharp boundaries.