Matchmaking Improvements Update

First Riot Post
12345 ... 11
Comment below rating threshold, click here to show it.

Zileas

VP of Game Design

10-09-2009
1 of 6 Riot Posts

Our current method of offsetting for pre-mades is pretty effective despite the anecdotal cases. However, we contracted Dr. Sam Danziger (samdanziger.com), a guy who has a Ph.D in computational biology, to take a look at our matchmaking system and see if he could find a better way to identify "team strength".

That really is the magic number -- If you know how strong a team will be, it's easy to match them fairly. A team could be a premade, or a bunch of solos you throw together, or whatever.

The general results of using this improved method can be seen in these two graphs:
http://beta.leagueoflegends.com/boar...=1&d=125511370
http://beta.leagueoflegends.com/boar...&d=12551137099

Without going into too much trade secret detail, since this stuff isn't easy, a few things were determined:

1) As we all know, blue team has a bit of an advantage right now. We are going to do some steps to reduce this advantage, but we will be matching around this detail for the time being.
http://beta.leagueoflegends.com/boar...1&d=1255113709
http://beta.leagueoflegends.com/boar...1&d=1255113709

2) 5 man pre-mades have a significant advantage, while partial premades have less. We of course already knew that, but we have a better corrective method than before that we will implement soon.
http://beta.leagueoflegends.com/boar...1&d=1255113709
http://beta.leagueoflegends.com/boar...1&d=1255113709

3) We have a better way to deal with the "carry" and "feeder" effect, and found a way to account for this better.
http://beta.leagueoflegends.com/boar...1&d=1255113709
http://beta.leagueoflegends.com/boar...1&d=1255113709

We hope to implement most of these changes soon -- probably within a month to 6 weeks.


Comment below rating threshold, click here to show it.

ch33sy

The Council

10-09-2009

first~!


Comment below rating threshold, click here to show it.

LaLaGoodbye

This user has referred a friend to League of Legends, click for more information

Senior Recruiter

10-09-2009

This is pretty cool to see you guys putting so much effort into making Matchaking work.

Kudos - I look forward to implementation.


Comment below rating threshold, click here to show it.

kerykeion

Junior Member

10-09-2009

Woot


Comment below rating threshold, click here to show it.

spielkind

This user has referred a friend to League of Legends, click for more information

Senior Member

10-09-2009

cool story bro, and fancy graphs you got!


Comment below rating threshold, click here to show it.

zerfman

Senior Member

10-09-2009

fifth...?


Comment below rating threshold, click here to show it.

Meta

Member

10-09-2009

Interesting... I'm curious as to what these graphs are based upon though? Obviously these "After Correction" graphs aren't real data, since the fixes haven't been implemented yet. So... what are the graphs based upon?

Also, could we get any more specifics on WHAT the actual changes will be?


Comment below rating threshold, click here to show it.

Peetch

Senior Member

10-09-2009

Time will tell the graphis look great but in actions is what matters


Comment below rating threshold, click here to show it.

rogerchew

Adjudicator

10-09-2009

Quote:
Originally Posted by Meta View Post
Interesting... I'm curious as to what these graphs are based upon though? Obviously these "After Correction" graphs aren't real data, since the fixes haven't been implemented yet. So... what are the graphs based upon?

Also, could we get any more specifics on WHAT the actual changes will be?
the post fix data in fact is real data. they took the past data and reran through the new model to find the new predicted values and compared with actuals. looking at those graphs, they do seem a lot tighter, and hopefully real world results will reflect this as well.

look forward to seeing the changes soon.

but lastly, data can be transformed in a lot of ways to fit any model you would like. i just hope that these were the right changes.

kudos for letting us see this type of work!


Comment below rating threshold, click here to show it.

Peetch

Senior Member

10-09-2009

Quote:
Originally Posted by rogerchew View Post
the post fix data in fact is real data. they took the past data and reran through the new model to find the new predicted values and compared with actuals. looking at those graphs, they do seem a lot tighter, and hopefully real world results will reflect this as well.

look forward to seeing the changes soon.

but lastly, data can be transformed in a lot of ways to fit any model you would like. i just hope that these were the right changes.

kudos for letting us see this type of work!

Its not "real" i mean they use real data but its a simulation of what would of happened. YES it is more than likely going to be very close to that out come in live but you never know. Like I said time will tell if this system will work. I HOPE IT DOES!


12345 ... 11