OR REGISTER
Register    FAQ    Search


Reply to topic  [ 19 posts ]  Go to page Previous  1, 2
Author Message
 Post subject: Re: Ratings
PostPosted: Tue May 18, 2010 2:56 pm 
Battle Dex Testing Team
Battle Dex Testing Team
User avatar

Joined: Sun Apr 18, 2010 1:32 am
Posts: 1271
Location: Slovakia
In original ELO system you lose same amount as opponent wins. But they changed it recentrly here.

_________________
"Are you guys doing that stupid facebook stuff again? Why are you guys in here wasting your time? We are supposed to be out playing videogames." - Stan Marsh


Top
 OfflineProfile  
 Post subject: Re: Ratings
PostPosted: Tue May 18, 2010 3:04 pm 
Contributor
Contributor
User avatar

Joined: Fri Apr 16, 2010 2:00 pm
Posts: 109
fewar wrote:
In original ELO system you lose same amount as opponent wins. But they changed it recentrly here.


I assume you're talking about cp points here.

Can anyone clarify exactly how it's been changed? and if it's based on the amount of points or not?


Top
 OfflineProfile  
 Post subject: Re: Ratings
PostPosted: Tue May 18, 2010 3:11 pm 
Battle Dex Testing Team
Battle Dex Testing Team
User avatar

Joined: Sun Apr 18, 2010 1:32 am
Posts: 1271
Location: Slovakia
This has nothnig to do with cp points.

_________________
"Are you guys doing that stupid facebook stuff again? Why are you guys in here wasting your time? We are supposed to be out playing videogames." - Stan Marsh


Top
 OfflineProfile  
 Post subject: Re: Ratings
PostPosted: Tue May 18, 2010 3:37 pm 
Moderator
Moderator
User avatar

Joined: Mon Mar 29, 2010 7:32 pm
Posts: 2829
Location: Louisiana, U.S.
fewar wrote:
In original ELO system you lose same amount as opponent wins. But they changed it recentrly here.


What is an ELO system? The only ELO i know of is the Electric Light Orchestra.. lol

_________________
Living goes by fast, catch your breath and it'll pass you by. And it won't last to sulk in the memories you hold.


Top
 OfflineProfile  
 Post subject: Re: Ratings
PostPosted: Tue May 18, 2010 3:40 pm 
Recruiter + Testing Team
Recruiter + Testing Team
User avatar

Joined: Fri Apr 23, 2010 6:48 am
Posts: 272
Location: Germany
Bubbles wrote:
What is an ELO system? The only ELO i know of is the Electric Light Orchestra.. lol

this is the ELO system

_________________
Image


Top
 OfflineProfile  
 Post subject: Re: Ratings
PostPosted: Fri May 21, 2010 5:32 pm 
Battle Dex Team

Joined: Sun Aug 23, 2009 4:02 pm
Posts: 1222
The Elo system is the system used in Chess, Magic, and other competitive games.

Under the standard elo system, the percentage of each player's change of winning is determined through a formula based on the difference in their rating. If two players are both rated 1800, they would each be assumed to have a 50% chance of winning.

Each match has a K value. That is the number of rating points at issue. If two 50-50 player play a 16K match, the winning player will move up 50% of the K value (8 points) and the losing player will move down 50% of the K value (8 points).

Now, assume a player has a 66.67% of winning a K value 16 match.

If he wins, he only moves up 33% of the points (about 5+) and the loser moves down the same thing (5+). This is because the expected outcome happened, so there should mot be much of a point shift. The system accurately projected the winner.

Now, if the player with a 33% change of winning wins, he goes up 66% of the points (10+) and the loser goes down 10+. There is a bigger shift here because the unexpected happened. That means the loser is probably better than his rank and/or the winner is worse.

So, in short, if you beat a higher rated player you move up a lot. If you beat a lower rated player you move up less. If you have a 2000 rating and you beat someone with a 1500 rating, you move up less than 1 point and they move down less than 1 point. The outcome was supposed to happen and it tells us very little about the accuracy of the ratings, therefore there should nto be much of a move.

Likewise, if you lose to a higher rated player, you only lose a few points. If you lose to a lower rated player you lose a lot.

Now, K value is important. The higher the K value, the more points that are at stake. Tournaments have a higher K value than regular games. Thus, winning a tournament should net you a lot of points.

I believe the adjustment we made to the Elo system only affects players ranked below 1750. If you above 1700, the Elo system is what applies. If you are below 1700, the Elo system still applies, but you get a plus point adjustment -- +1 point if between 1725 and 1750, +2 poitns if 1700, +4 points if 1675, +6 if 1650, +8 points for 1625, +10 for 1600 (this may not be totally accurate, but it is very close)

Thus, if you are 1600 and would have lost 8 points under the Elo system, you lose 8 but gain 10, so you get a +2 for losing. If you would have lost 12 points. You gain 10 and get a -2. So you can go below 1600. However, it is less likely. This was changed so new players would not likely drop below players that had not played.

Again, the adjustment only applies if you are below 1750. If you are above, it is the standard Elo system with no adjustments.

I hope that answered everyone's questions.


Top
 OfflineProfile  
 Post subject: Re: Ratings
PostPosted: Sat May 22, 2010 1:11 pm 
Battle Dex Testing Team
Battle Dex Testing Team
User avatar

Joined: Sun Apr 18, 2010 1:32 am
Posts: 1271
Location: Slovakia
I think I know what needs to be done here. You should show a graph here of how much points you lose if you have lets say 1800 and you lose to opponnet with rank from 1500 to 2200.

_________________
"Are you guys doing that stupid facebook stuff again? Why are you guys in here wasting your time? We are supposed to be out playing videogames." - Stan Marsh


Top
 OfflineProfile  
 Post subject: Re: Ratings
PostPosted: Sat May 22, 2010 2:16 pm 
Battle Dex Testing Team
Battle Dex Testing Team
User avatar

Joined: Sun Apr 18, 2010 1:32 am
Posts: 1271
Location: Slovakia
we played with calculator in chat for a while :) I guess this k value is 32 for tourneys and 16 for regular games.

Result is : you should never lose more than 32 points. If you do report it! (there might be some rounding problem, so lets say 33 is ok )

_________________
"Are you guys doing that stupid facebook stuff again? Why are you guys in here wasting your time? We are supposed to be out playing videogames." - Stan Marsh


Top
 OfflineProfile  
 Post subject: Re: Ratings
PostPosted: Sun May 23, 2010 2:35 pm 
User avatar

Joined: Tue Apr 20, 2010 5:14 pm
Posts: 49
I'm glad this got changed. It really bothered me that for a while I was ranked lower than people who had never played.

_________________
The Unofficial Official 2~vs~2 and Team Match Specialist


Top
 OfflineProfile  
Display posts from previous:  Sort by  
Reply to topic  [ 19 posts ]  Go to page Previous  1, 2

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron

©2009 Bandera Games LLC
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group