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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?

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interestMeasure function from arules v1.5-5 let’s you find additional measures and also some invariant ones. Here’s the link to the R documentation: https://www.rdocumentation.org/packages/arules/versions/1.5-5/topics/interestMeasure

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