Why weka associations apriori start button disabled even if the nominal values?

Question

I have three clinical data files in *.xls . I saved these three files in microsoft excel as *.csv file . and then I imported these *.csv files into the Weka tool . To use Apriori association rule, I changed the data types to Nominal data types through " weka>>filters>>unsupervised>>attribute>>NumericToNominal " . But , in the "Associate " tab , Apriori rule can not be used , because the "start" button is disabled .

How can I solve these problem ? Is there other restrictions to use Apriori rule in Weka tool ? ...

Many thanks !

Best regards,

Anwar

Answer 1

to use the Association Apriori algorithm all attributes should be discretized. you may have attributes which are numeric. so convert it to discrete values

Answer 2

Did you click on "Apply" next to the Filter area? It will convert everything to Nominal.