ItemfrequencyPlot - 显示底部频率项集的规则包

Question

我想查看交易数据中频率最低的项目，如何查看？

代码：

a_list <- list(
c("a","b","c"),    
c("a","b"),
c("a","b","d"),
c("c","e"),
c("a","b","d","e")
)

trans <- as(a_list, "transactions")

itemFrequencyPlot(trans)

PS：我正在将它集成到一个闪亮的平台上。

Answer 1

您可以使用 itemFrequency() 然后排序或过滤您喜欢的频率并用 barplot() 绘制它们。

R> barplot(sort(itemFrequency(trans), decreasing=TRUE))