La Classification Mathématique par matières 2000 Mathematics subject Classification 2000 Query : CC = 91C20 62-XX Statistics 62H30 Classification and discrimination; cluster analysis [See also 91C20] 91-XX Game theory, economics, social and behavioral sciences 91C20 Clustering [See also 62D05] [New MSC 2000 code] MSC 1991 code in relation : 92G30 Keyword : Back to the Mathematics Subject Classification (version 2000)