prune_prefs: Account for cases that refuse all matches
In PAutilities: Streamline Physical Activity Research

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Account for cases that refuse all matches

Description

To run the college admissions algorithm, it is assumed that each student/college has at least one possible match. In the activity transition application, possible matches are restricted to "nearby" cases, i.e. within some specified window_size. Thus, if there are no matches close by, there are no possible matches, and the case needs to be removed from the analysis in the college admissions algorithm. It needs to be re-inserted afterwards and labeled as a false positive or false negative, depending on whether it was a college (i.e., a predicted transition) or a student (i.e., an actual transition), respectively.