Quickly, the three categories are:

1. Current knowledge.  How much do I currently know about this?
2. Needs.  Do I use this now or will I use this in the near future?
3. Wants and other miscellaneous factors.  How much do I want to go to this?

The first category addresses breadth of knowledge.  The pragmatic programmers would call this diversifying your knowledge portfolio.  In Scott Ambler terms, attending a session on a topic you don’t know much about might help you on your way to becoming a generalizing specialist.  It’s the factor that addresses learning something new.  Give yourself a score of 3 if you know little or nothing of the topic.  Give a score of 1 if you’re an expert or really proficient.  For example, suppose you’re a Java guy and don’t know much about .NET.  Give .NET related classes a score a 3.

The second category addresses your immediate and near term needs.  Do you use this now?  Will you use this in the next six months?  This category addresses the depth factor.  Attending such a session may shed some light on something you never knew about something you currently use.  You may learn how to use a technology better, some best practices, or some tips and tricks.  Give a score of 3 if this is something you use or will use soon.  Give it a 1 if you don’t see it in your near term future.  Give it a 2 if you’re not sure.

The last category addresses everything else.  How much do you want to go?  How much do you want to learn this technology?  Maybe it’s AJAX or Ruby on Rails and you give it a score of 3 because you really want to learn that hot technology.  Maybe Uncle Bob is speaking and you really want to go see him perform.  Score it a 3.  Or maybe you’ll give the category a score of 1 because you think you won’t get much out of it.

Add the scores of the three categories to come up with a score for the session.  Then pick the session with the highest score for that time slot.  What if there’s a tie?  Well, you could look at the categories and pick the session with the highest score for the category most important to you.  I think conference sessions in general are better at the breadth category.  How much can you really get out of going to a 90 minute session anyway?  Longer tutorials are better at depth.  Consider that for helping to break a tie.

What I found is that many times the first two categories cancel each other out.  Logically, if you don’t know much about something (score 3), then you must not be using it and may not need too in the near term (score 1).  On the flip side, if you know a lot about something (score 1), it’s probably because you’re using it (score 3).  However, what’s interesting is when you don’t know anything about a technology and you’re going to use it real soon.  That’s 6 points right there.

The other negative is that scoring sessions is time consuming and we programmers are notoriously lazy.  However, learning is a career investment and investments should be carefully chosen.

I hope this scoring system helps you.  I know I was pretty happy with the results.