This site uses ratings to facilitate game match ups between different players. Briefly, ratings are an imprecise indication of a player's skill in a game. The more games a player wins, the higher the rating. Read on for more information about how we calculate ratings.
Feeding in the ratings will give you a good "guesstimate" of the outcome, but you need to know what the actual old ratings were, when the games finished to be absolutely certain.
Note that it doesn't make any sense to talk about being 'penalized' when your ratings score goes down. The ratings are not an awards based system. It is just a statistical analysis of your wins and losses. The score is adjusted after each game, the intention being to give an indication of how well you've done relative to the other people playing.
Losing ratings points after you win or lose a game is not a penalty. It is just an adjustment. If you lose a match against a lower rated player, this is an indication that your ratings score may be a little higher than it really should be, and so it will likely be adjusted downwards. It makes no difference whether the match score was 14-0 or 9-8. A win is a win, and a loss is a loss. The amount by which the ratings score is adjusted depends primarily on the difference between your rating (at the time the match ends) and that of your opponent. There is a chart here [ Ratings in Practice ] which gives you an idea of how big the adjustment will be. Another factor that can effect the size of the adjustment is the experience score if you have a provisional rating. Someone who has only played a small number of games will get a bigger adjustment, so that a rating score that accurately represents their ability level can be arrived at more quickly.
Try to not put too much significance on the individual adjustments made after each game, and start thinking about the overall aim of the system, which is to try to ensure that each player's rating score, relative to everyone else, is a reasonable approximation of their ability in the game.
I might add that the ratings systems are designed by mathematicians and statisticians who know about these things, are used by many other sites and organizations, and have been proved to be relatively accurate over a long course of time. It is not just something that the squirrels have cobbled together.
There are two sections that work differently. The top section has three options, you can choose to have it display only players with a Tournament rating, or also include players with an Friendly rating, or also include players with a Provisional rating. The bottom section always shows all players whether their rating is T, F or P.
The top 25 are just the top 25 Tournament rated players. The others include friendly and provisional ratings also.
If you include Friendly ratings when checking the top players list, the top 25 will tend to comprise of Friendly-rated players only, due to the fact that a players friendly rating tends to be 200 to 300 points higher as noted above.
Our rating system is pretty complex. However, it has no idea by looking at you how skilled you are in any game. So during your first few games, it absolutely refuses to tell you what it thinks of you. After you've finished four games, it will give you a provisional rating. Replace the word provisional with the word tentative, or unsure, and you'll understand the concept better. After each game, the system reevaluates your rating, taking into account your current provisional rating, your win/loss record, and the rating of the opponent you just played. It then issues you a new rating which it feels best reflects your skill level in relation to the skill level of your opponents. If it adjusts your rating downward even after a win, then our system is most likely saying that you are playing opponents that are too easy for your skill level. On the other hand, if your rating goes up even after a loss, it's like our system is saying that you're smarter than you look.
Non-ranked/rated games do not show in your completed games list, however, they are all listed on the specific finished game type when you click on that games type in your finished game list. Players still win tokens for unrated games. Watch your total Gold, Silver, and Wood tokens on your Game Sheet for your combined total number of wins, loses and draws.
Kinda. The calculations our system uses to determine your rating change dramatically after you have completed 20 games. Before you have completed 20 games, it uses a math equation that I can understand. But afterward, well, let's just say I'm glad that a computer has the job of figuring out your new rating. The most noticeable change is that your rating won't fluctuate as much after each game, but it will still be constantly adjusting to assess your skill level.
A special note regarding the tournament rating vs a friendly ratingThe more players who go for their tournament ratings, the bigger the player base and the more balanced the rating base. Just remember, the tournament ratings are honestly a better rating as they are based on games that players do not predetermine their opponents...unlike friendly games in which some players deliberately seek out only new guests or weaker players and win by default in a larger number of games. I have found the friendly rating to not be as honest because of this and it is exactly why Chad created the tournament rating in the first place.
Regarding site sponsored tournaments and friendly ratings: The purpose of a Tournament Rating is the larger variety of opponents you are going to face when in a site wide tournament. In a club, even if it is a large club, you are limiting the opponents to a much smaller number thus changing the reason for a tournament rating. Friendly ratings are calculated from games where the player is free to choose his or her opponents. And that is what you are doing when limiting your opponents to those just within a single club. Since the process of choosing opponents can have some effect on the resulting rating, the Friendly rating is seen as less accurate than a Tournament rating, which is calculated only as the result of games played in a site tournament.
Our concern with ratings are accuracy. We want the system used here as accurate as possible. Even with friendly ratings. When a club with 4 players only plays themselves, the friendly rating won't be very accurate at all. Even less so if it were a tournament rating. At least with 6 players in any given match, you will find the ratings a little more accurate than with fewer players. If you are going to use the site system, these are the limits we are placing on it. If the limits do not suit you, you are still free to use the wiki system to set them up.
Posted on the Club Presidents discussion board 5.24.09
There has been much discussion regarding tournament ratings. Several, who want to be able to limit the participation of a tournament to just their club, want those games to be tournament rated.
Let's start with clarifying what each rating is and what it's purpose is:
Fact: When you have tournaments restricted to club members only, it does not allow everyone from the whole site to play (the extent of the true playing pool). In fact, you are limiting the playing field to a select few.
Fact: When you can pick and choose your own opponents, that's not reflecting a true tournament rating.
GoldToken was built on the premise that we will be the best of the best. If the system is compromised, we can no longer claim that. Therefore in order to insure the integrity of GoldToken, all tournament rated games are computer generated. If you want to do club tournaments and chose your partners from among a limited player group, we say go for it! Have fun! However, those ratings will not be reflected as tournament ratings. It would be like having a professional baseball team choosing a minor league team to play, so they would be assured of winning. I am sure all of you will agree that would not be right. Who would want to have a rating based on something that bogus? Not me!
GoldToken is for everyone. You don't have to be in tournaments to have fun here, that's why we have friendly games. But for those of us who want to play tournaments, we do not want it to be compromised. There are plenty of sites that players can go to, and manipulate, to make themselves feel like they are the best. If that is what is important, I wish you luck. But if you truly want to be the best, or display your true playing ability, you will not have any problems playing anyone who wants to play. You will win because you really are the best. Not because you picked someone who is not up to your speed, or is only in the same rating class as yourself so that your rating won't drop should you loose because you are more concerned about your rating than playing the game.
I understand that clubs want to limit tournaments to just those within their clubs. But when the playing field is so small, (even if the club has 30 or 40 active players in the tournament) what you are really doing is limiting the playing field...much like selecting your own opponents.
Tournament ratings are going to be generated by the database. If you want to show who is best on GoldToken, then it will be in the site sponsored tournaments open to everyone.
Clubs only had friendly ratings in all their club matches up until a year ago. A tournament rating is for those who do not select their opponents. Plain and simple. If we allow a club with 30 players to play only each other, that defeats the purpose of a tournament rating.
Looking forward to some hard fought matches,
The problem with tournament ratings for ladders in clubs is that it would give unfair rating values for small clubs. If all clubs were large, then we might feel differently, but as it is, a considerable number of clubs are on the small side with only 10 to 20 players (many with even less).
For tournament ratings, there needs be a larger random player base in which one cannot select their competition. Thus, to keep a true rating standard, club ladder games can only be friendly rated.
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