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我已经安装了软件包arules。如何像往常一样查看内置数据集?
我试过了:
library(arules) data(Groceries) Groceries
虽然它只为我提供:
transactions in sparse format with 9835 transactions (rows) and 169 items (columns)
什么是稀疏格式?
inspect(Adult) inspect(Adult[1:10,1:10]) inspect(Groceries)