Best criteria for Matchmaking

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Viajero
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Best criteria for Matchmaking

Postby Viajero » 15 September 2013, 12:56

If I understood the below correctly and if this is the latest on the MM best predictors discussion originated by VoodooMike, I d suggest Cyanide to consider capturing their conclusions for the upcoming BB2 Matchmaking system (asuming there is one!): Use WF as the criteria for MM instead of TV:

WF (Win Factor) for a given team = Team Wins - Team Losses.

See the detailed review here: http://voodoomath.wordpress.com/author/voodoochat/

Now I probably understand if Cyanide/Focus thought that potential newcomers to the MM system may think TV is still a better way to match players (i.e. with WF it is quite possible that teams with a significant disparity in TV be actually often matched), so maybe another suggestion is to create several MM Public Leagues (much like todoay), each with a different MM criteria. Some based on TV as today, others based on WF. And let the players choose.

EDIT: According to Dode´s post below it seems TV++ was even betetr than WF. Please check the linked blogs for more details.
Last edited by Viajero on 15 September 2013, 14:35, edited 1 time in total.
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dode74
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Re: Best criteria for Matchmaking

Postby dode74 » 15 September 2013, 13:34

I believe TV++ was considered better, which is simply TV adjusted for WF, with each point of WF being worth 30TV. See here.

Otherwise I agree entirely.
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angus1903
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Re: Best criteria for Matchmaking

Postby angus1903 » 15 September 2013, 13:36

Anything that moves towards a performance based system gets a vote for me. In saying this I see no reason why it only has to be one factor. Could we not use this win factor as a primary method then rank using TV within this. assuming there is actually enough teams spinning to make this workable.

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dode74
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Re: Best criteria for Matchmaking

Postby dode74 » 15 September 2013, 13:41

Anything that moves towards a performance based system gets a vote for me. In saying this I see no reason why it only has to be one factor. Could we not use this win factor as a primary method then rank using TV within this. assuming there is actually enough teams spinning to make this workable.
If I understand you then that's exactly what TV++ does.
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MattDakka
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Re: Best criteria for Matchmaking

Postby MattDakka » 15 September 2013, 13:51

The WIN FACTOR sounds good, but consider this:
Team A with a record of 5 wins, 3 draws, 0 losses, TV 1510, WIN FACTOR 5
Team B with 9 wins, 11 draws, 4 losses and TV 1730, WIN FACTOR 5.
By WIN FACTOR they should be closely matched, by TV they are quite mismatched (a difference of 220 TV).
In other words if a team has more draws than wins the WIN FACTOR doesn't work well.
Maybe the draws should count 0.5 for purpose of calculating WIN FACTOR, like this:
WIN FACTOR = [WINS + (DRAWS x 0.5) ] - LOSSES
By this formula team A would have a WIN FACTOR of 6.5, team B a WIN FACTOR of 10.5, and in my experience this represents better the relative value of the 2 teams.
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dode74
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Re: Best criteria for Matchmaking

Postby dode74 » 15 September 2013, 14:02

Statistically, Matt, you are wrong. While common sense suggests you might be right, the data says otherwise. Win% was analysed here.
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angus1903
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Re: Best criteria for Matchmaking

Postby angus1903 » 15 September 2013, 14:10

I have been slated for posting this before but as it is a new forum I think it gives me an excuse to post it again. I would like to see a move towards the way that games are matched in FIFA seasons. Every team in FIFA has a rating of 1 - 5 stars (TV) and all new players start in the bottom division. In a season you play up to 10 games against other teams in your division with the same or similar star rating.

I can't remember the exact totals but depending on the points you score across the 10 games you do the following:

< 10 Relegated
10-14 stay in the same division
15-17 Promoted
> 17 points champions (Fake trophy added to your teams history)

Obviously Blood Bowl has nowhere the player base of FIFA but this just means you need less divisions say 3 and you match based on TV within these divisions. Also in FIFA the player is in a division but in Blood Bowl I think it would work better using the teams meaning you could spin one or more teams in each division.

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dode74
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Re: Best criteria for Matchmaking

Postby dode74 » 15 September 2013, 14:11

Angus, would that not involve splitting the playerbase, thereby reducing the chances of getting a game? I'd be against anything which involves that.
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MattDakka
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Re: Best criteria for Matchmaking

Postby MattDakka » 15 September 2013, 14:16

Statistically, Matt, you are wrong. While common sense suggests you might be right, the data says otherwise. Win% was analysed here.
Sorry but I don't see the relation between that link and the formula, I was talking about WIN FACTOR, not WIN RATE%.
I simply suggested to include draws in the WIN FACTOR formula, because even a draw can improve your team.
I guess that the WIN FACTOR is misleading, it should be called MM FACTOR, MM VALUE, TEAM STRENGTH or whatever you like, at the end of the day it's just a value used to pair teams of same power.
Last edited by MattDakka on 15 September 2013, 14:25, edited 5 times in total.
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giorss
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Re: Best criteria for Matchmaking

Postby giorss » 15 September 2013, 14:20

but to match teams, maybe to consider a bit draw matches and also defeats could be useful to consider the spp and gold earned by those teams
maybe 1 point for victory, 0.33 to draws and 0,05 to defeats to avoid to match new teams with ones that have many draws and losses
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