8.2 apriori quick start
Below we share examples of the various commands supported by the package. These should be repeatable out of the box with sample data available for download. The sample data is based on real analysis of courses (the items) undertaken by students (the baskets) within a Master of Computing degree. The sample data itself is fictional.
Provide the dataset file as a command line argument:
ml itemsets apriori mcomp.csv
Or else pass the data into the command through a pipe:
cat mcomp.csv | ml itemsets apriori
Filter itemsets with support at least 0.2:
ml itemsets apriori --support 0.2 mcomp.csv
Or pipe the output to filter those itemsets of interest:
ml itemsets apriori mcomp.csv | mlr --csv filter '$support >= 0.2'
Build apriori association rules:
ml train apriori mcomp.csv
Filter the rules on their confidence:
ml train apriori --confidence 0.95 mcomp.csv
A second dataset illustrates basket analysis using a record of who has purchased various DVDs or movies.
wget https://raw.githubusercontent.com/anusii/edsight/main/basket/dvdtrans.csv ml itemsets apriori dvdtrans.csv ml train apriori --confidence=0.95 dvdtrans.csv
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