3 ms·

TrueSkill is nice because Microsoft published the math. The article is a nice and colorful introduction. From what i hear the Starcraft 2 matching algorithm is

• bigmac 16y ago
  My understanding is Blizzard plans to keep the details of the math secret because they don't want the system to be gamed. Considering how seriously people take SC2 I can hardly blame them for this decision. This raises the question of what it would take to create a ranking system that wasn't susceptible to active "attack" by people trying to game the system. One aspect of SC2's ranking system that doesn't seem to exist is some sort of skill decay. I used to be a Diamond level player but I haven't played seriously in months. Yet, my rating is still high as if I was that good. It seems like my only option is to log in and get destroyed for a few days to have my rating drop, which is not really something I want to do.
  • mquander 16y ago
    Long-term inactivity will probably be taken care of via ladder "seasons" -- when a new season starts, you lose your rank, and your rating will likely be in some provisional state.
• warp 16y ago
  Here is an article by David Sirlin which gives some insight into the Scarcraft 2 ranking system: http://www.sirlin.net/blog/2010/7/24/analyzing-starcraft-2s-ranking-system.html http://www.sirlin.net/blog/2010/7/24/analyzing-starcraft-2s-...
  • beza1e1 16y ago
    Interesting. So the Starcraft 2 system is actually less accurate than TrueSkill to motivate beginners with bonus points.