Sorry, I was wrong. Its not the September 2015 Webinar I wanted you watch. Its the March 2017 issue. The entire 1.5 hour webinar is very informative, explains the algorithm, the how and why it works (I thinks its genius), but pay particular attention to the section beginning at 59:50 and continue to the end of the webinar.
The section is titled; 'What does it mean for securities to play well together in a strategy'.