Bi-metric Scoring

Bi-metric Scoring resembles an alternative way to score search results. It is meant to be used in Match context, but is not necessarily bound to Match type of searches. The main idea behind bi-metric scoring is to score a document by a set of different scoring concepts, where each scoring concept is assigned a score that reflects the result quality in two directions:

• how good the result matches the query,
• how good the query matches the result.

For technical reasons, bi-metric scoring can only be applied as a re-scorer / re-ranker, assigning its scores to a set of results retrieved by our usual TK score. We further have to limit sorting by bi-metric scores to the first page of search results.