# Null-invariant measures of association in R

A usual way to find association rules in R is the "arules" package, which easily let's use calculate some rules based on the apriori algorithm.

However, for the data i'm using, I have a lot of NULL cases (baskets where no product A o B is present). This means that I need to calculate some null-invariant measures (kulcynski, for instance).

Does anyone know of any package or workable code that let's me implement this as opposed to writing from scratch the entire algorithm?