currently composing a lecture on Association Rule Mining, Frequent Item sets.
Therefore I need to formally describe the count function of the support measure as occurring int the following forumula :
The count function counts the number of cases where the item set X is a subset of a transaction t occurring in the set of all transactions T
Now my question, can I mathematically (formally) describe the sentence above using the following notation?
Or if not, what would be the correct way to express this? I'm a bit concerned because "there exists" rather evaluates to Boolean and not to integer...
Thanks a lot!