larsga/Duke — pull request #160 by mpiacenza (2014-05-12 22:08:41+00:00)
Title: Test File Listener ignores certain LinkKinds.  

Was having trouble getting the genetic algorithm to correctly identify links using a test file of all "+" matches (which implies anything not in the file is a "-"). This patch provides a default match of "unknown" if the link isn't explicitly SAME or DIFFERENT, allowing more accurate recall / f-factor calculations.