在R中使用规则创建特定规则

本文介绍了在R中使用规则创建特定规则的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个大数据集(0和1的矩阵)，具有200个变量(每个变量是一个项目)和近1M行(每行是一个事务).我在R中使用"arules"包进行关联规则挖掘.我考虑了 2个项目，并且我想创建在规则的左侧至少具有其中一项的所有规则.我写的代码是:

I have a large data set (matrix of 0s and 1s) with 200 variables(each variable is an item) and almost 1M rows (each row is a transaction). I use "arules" package in R for association rule mining. I considered 2 items and I want to create all the rules that have at least one of them at the left hand side of the rule. The code that I wrote is:

rules <- apriori(data, parameter = list(support = 0.1, confidence = 0.1, minlen =2),appearance = list(lhs=c("itemA=1","itemB=1"),default="rhs"))

但是此代码创建的规则在规则的左侧仅包含itemA，仅itemB或仅包含这两个规则.如果您能帮助我，我非常感谢.

But this code creates the rules that have only itemA, only itemB, or only both of them at the left hand side of the rules. I really appreciate if you could help me.

推荐答案

我猜这段代码对您有用:

I guess this code works for you:

rules <- apriori(data, parameter = list(support = 0.1, confidence = 0.1,minlen =2)) subrules <- subset(rules, subset = lhs %in% c("itemA=1","itemB=1"))