Minimum support scale

[ihsansatriawan]

in doc, you write patterns = pyfpgrowth.find_frequent_patterns(transactions, 2) , 2 is minium support right ? in my knowledge, FP-growth has minimum support and minimum confidence in % , my question is, what scale of minimum support ? thx

[evandempsey]

Yes, it is the minimum support.

This implementation uses an absolute minimum support count, like the description in Han, 2000. A relative support is possible too, i.e. 0.1 would mean the item has to appear in one out of ten transactions or more, but I haven't implemented that. It's trivial, though.

The minimum confidence is used in the generate_association_rules step.

[ihsansatriawan]

so you mean, it's minimum item appear 2 in trasaction right ?

[evandempsey]

Yes.

[ihsansatriawan]

Why not implement like confidence? With %