单项选择题
A.循序被购买的高获利商品组合B.同时被购买的高获利商品组合C.常常循序被购买的商品组合D.常常同时被购买的商品组合
A.corr({A},{B})=support({A})*support({B})B.corr({A},{B})=support({A})*support({B})/support({A∩B})C.corr({A},{B})=support({A∩B})/(support({A})*support({B}))D.corr({A},{B})=support({A∩B})
A.K-MeansB.Centroid MethodC.Ward’s MethodD.以上皆非