规则-符合规则的交易子集 [英] R arules - subset of transactions that match a rule

问题描述

我正在使用R包 arules .我有一些交易和规则(见下文).我想要违反规则的交易子集.我该怎么办?

I'm using the R package arules. I have some transactions and a rule (see below). I want the subset of transactions that break the rule. How can I do that?

这是设置:

library(arules)
data(Adult)
summary(Adult)
rules = apriori(Adult,parameter=list(support=0.2,confidence=0.8))
summary(rules)
r=rules[1]

我想要包含规则r左侧但不包含右侧的交易子集. arules文档没有这样的示例.我已经尝试过%in%，match和subset，但是语法不正确.

I want the subset of transactions that contain the left hand side of the rule r but not the right hand side. The arules documentation doesn't have an example like this. I've tried %in%, match and subset but I can't get the syntax right.

subset函数的文档中有一个子集规则示例，但没有子集事务示例.

The documentation for the subset function has an example of subsetting rules, but no examples of subsetting transactions.

http://rss.acs.unt.edu/Rdoc/library/arules/html/subset.html

推荐答案

实际上arules上下文中的子集语法与任何其他上下文非常相似:您可能需要尝试以下操作:

Actually the subset syntax in the context of arules is very similar to any other context: you may want to try the following:

subset(transactions, items %in% lhs(r) & !items %in% rhs(r) )

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