Dear All, my problem case: I want to use the apriori-function to analyze my test data. Take a look (the data is attached). WarenGruppe is a hierarchical higher class for Item. I analyzed with apriori() Customer and Item but I want also to start a cross-rule-mining. That means for example that one rule could be {Item2, Item4} -> {WG2} and another one could be {Item1, Item5} -> {Item2}. The code is attached. I can just analyze WarenGruppe or Item, but the goal is to analyze them booth (like the example). Has somebody a hint or a reason to realize this "cross-Analysis" in R? Best regard Michael -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: Customer_item.txt URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20140220/9fad4153/attachment-0004.txt> -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: R_Code.txt URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20140220/9fad4153/attachment-0005.txt>