determine relevance based on relationship: e.g. most recent date or count

[wivaku]

Is there a way to the following influence the relevance?
E.g. the “Peter” that I visited most often (count of related Visits), or most recently, should get a higher relevance than the “Peter” that I hardly ever visit.
So take into account count of related Models or aspect of them (date, or other methods to determine relevancy, e.g. income amount).