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Modified Swiss system to fix WvW tournaments

in WvW

Posted by: Johje Holan.4607

Johje Holan.4607

I think I’ve come up with the best system to use when making matches for the WvW tournaments. Anet feel free to use this system, I make no claims to it. You could name it after me though – on second thought don’t do that in case it screws a server over, lol.

But seriously, I’ve run several simulations using various match making systems and this is by far the best. Its pretty good – it gives matches with servers close to one another and it provides variety. The best of both worlds.

It is a modified Swiss System. The modification is that it takes into account Glicko rating and puts a limitation on the pairings (or triairings?) that are allowed.

The scoring that seems to work best is 5 points for first place in a match, 3 points for second and 2 points for third.

All servers in a region are in the same pool, i.e. all 24 NA servers and all 27 EU servers. (I didn’t run simulations for EU but it should work there too, someone can feel free to do it).

The first week of the tournament will be determined by Glicko score as usual. The key is that at the start of each subsequent week, instead of simply making the matches by tournament score, you put a limitation in that if two servers Glicko scores differ by X amount then they cannot be matched together.

The other thing that must be done is that each match must be chosen by beginning with the server that has the highest Glicko score and that has not been given a match already. This is important because if you begin the matching using tournament scores, the system falls apart toward the end of week two.

An example for NA. Week 2 is beginning. The first two tier matches have been made and it is time to make the tier three match. Of the available servers, you begin the match by slotting DB. You do this, not because DB has the highest tournament score of the remaining servers, but because DB has the highest Glicko rating of the remaining servers.

To proceed to match servers with DB you then begin to consider tournament score. Of the remaining servers SBI, NSP, DR, DH and EB have the highest tournament score from Week 1 (they each have 5 points from winning Week 1). However only SBI falls within the range of Glicko scores alowed to play DB. So you slot SBI.

You then skip the rest of them and start to look at the remaining servers that have the next highest tournament score. Because this is only Week 2, you look at servers that have 3 points from coming in second in Week 1. Of these remaining servers, FA is next (they have the highest Glicko score of the remaining servers with a tournament score of 3). Since FA is allowed to play both DB and SBI according to the Glicko limitation, you slot FA. So the T3 match for Week 3 is DB/SBI/FA.

And you proceed from there to make the rest of Week 2 matches in the same manner.

(edited by Johje Holan.4607)