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Association Rules in #RStats #MichaelEnquist @gta_r_users. Major grocery chain dataset with 50,000 customers, 37,000 merchandise items leading to sparse matrix. Apriori algorithm with support at 0.00001 results in 167000 rules. Unlike to run the complete dataset in a reasonable amount of time, more intelligence makes it a popular approach. (GTA R Users Group, Insight Data Science, Adelaide Street E., Toronto, Ontario) 20191016