R 我的所有关联规则的提升值均为1。我在做什么？

我正在做一个关联规则，我所有的支持置信度Coverage和lift的输出都是1。我在做什么

数据集：

Cosmetics_df <- read_csv("attached_file")
head(Cosmetics_df)
Cosmetics_df <- Cosmetics_df[,c(-1)]
summary(Cosmetics_df)
Cosmetics_trans <- as(Cosmetics_df, "transactions")
inspect(Cosmetics_trans)
rule1 <- apriori(Cosmetics_trans, parameter = list(supp = 0.2, conf = 0.5, target = "rules"))

inspect(head(sort(rule1, by = "lift", decreasing = T), 5))

    lhs    rhs                 support confidence coverage lift count
[1] {}  => {Bag=[0,1]}         1       1          1        1    1000 
[2] {}  => {Blush=[0,1]}       1       1          1        1    1000 
[3] {}  => {Nail Polish=[0,1]} 1       1          1        1    1000 
[4] {}  => {Brushes=[0,1]}     1       1          1        1    1000 
[5] {}  => {Concealer=[0,1]}   1       1          1        1    1000