Cannot use any other data to run workflow from Rapid Miner Book
I would like to use the Similarity-based Content Recommendation process from the rapid miner book (http://rapidminerbook.com/index.php/chapter-downloads/chapter-9/, chapter 9.5.2.). It works fine with the provided .ioo, .md and .properties data, but when I load my own data (attributes are the same) into the repository, it doesn’t work although there is no error message.
I already convertet the original .ioo file into a new excel file (with the write excel operator) and added this excel file to the repository, which is also not working. I presume I am missing something while adding an excel file to the repository (I start with +add data and follow the import wizard). Does someone know where the problem could be?
Thank you for your hints and help.