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Quick ladder question... - Printable Version +- Forums (https://www.theblitz.club/message_boards) +-- Forum: The Firing Line (https://www.theblitz.club/message_boards/forumdisplay.php?fid=1) +--- Forum: Campaign Series (https://www.theblitz.club/message_boards/forumdisplay.php?fid=8) +--- Thread: Quick ladder question... (/showthread.php?tid=51537) |
Quick ladder question... - R Zimmerman - 05-30-2009 What is an ELO rating? Thanks! RE: Quick ladder question... - Herr Straße Laufer - 05-30-2009 Something that was put in place to kinda resemble a "chess" rating system. Win/loss ratios were said to be not enough of a measure in comparing player abilities against other players. Though, you could use win/loss to effectively rate and know a player's ability ... if you do a little extra work, doing the work and understanding it may not have been worth the effort. RR RE: Quick ladder question... - Huib Versloot - 05-30-2009 The best players have the highest ELO ratings. In fact it functions rather well and is far more accurate than win/loss ratings as the latter doesn't take into account the skill level of opponents. ELO does. If you do a sort on ELO in the ladder the strongest players are on top. A win/loss ratio sort is "polluted" with players who have high win loss rate but rarely challenge opponents with more skill than themselves. I always look at the ELO to have an idea about a person's skill in one look. If their ELO is higher than mine, I'm probably in for a difficult match. RE: Quick ladder question... - Deturk - 05-31-2009 In the day, ELO stood for; Electric Light Orchestra RE: Quick ladder question... - Steel God - 05-31-2009 From the FAQ Section of the Ladder: https://www.theblitz.club/ladders/faq.php Q:What is the ELO ranking and how does it rate players on the ladder? A: In the world of Chess there is a rating system called ELO, which we have modeled here at the Blitz as a way of showing the relative strengths of ladder players. In brief, the rating system awards points to winners (and subtract points from losers) of games based on the relative strengths of the players before the match. Thus, a strong player beating a weaker player will gain fewer points than if the weaker player had beaten the stronger player. The bigger the starting difference, the fewer points at stake. Everyone starts with 2000 points and moves up/down from there. I must emphasize that this is a auxiliary measure, the most important measure (and thus the default ordering of the ladders) is the total number of points amassed, as the Blitz exists to bring players together to play and discuss. That being said, you may take greater pleasure in competing well against a player with a higher ELO rating than you. The code for our implementation is below. The one change that I have made to the chess version is a take (a very rough) account of level of victory. The next addition would be a point swing reduction for games including novice players (who start at 2000 points, but most likely do not warrant that higher a rating as beginners). The final change that I will make is to add a factor for the balance of the game (most likely a mixture of Win/Loss and player reported balance) function ELO_Calc($p1_rank, $p2_rank, $victory_level, $result) { // ELO variables for // rank_inc = K * ( S - 1 / (1 + power(10, -(Rp-Rc)/alpha)) // adjust S based on win level and K and alpha based on newbie status. $K = 40; $alpha = 400; $S = 1; $pw_rank=$p1_rank; $pl_rank=$p2_rank; if ($victory_level == 2) { $S = 0.5; if ($p1_rank>$p2_rank) { $pw_rank=$p2_rank; $pl_rank=$p1_rank; } else { $pw_rank=$p1_rank; $pl_rank=$p2_rank; } } if ($victory_level == 3) { $pw_rank=$p2_rank; $pl_rank=$p1_rank; } if (($result==7) or ($result==) { $S = 0.75; } $rank_inc = $K*($S-1/(1+POW(10,-(($pw_rank-$pl_rank)/$alpha)))); if ($victory_level == 3) $rank_inc = 0-$rank_inc; return $rank_inc; } RE: Quick ladder question... - umbro - 06-01-2009 see also: http://en.wikipedia.org/wiki/Elo_rating_system, especially theBlitz reference. umbro RE: Quick ladder question... - Von Luck - 06-01-2009 LOL MR BLUE SKY comes to mind Dan as its 24c here at the moment. RE: Quick ladder question... - Mojo26 - 06-01-2009 Deturk Wrote:In the day, ELO stood for; Electric Light Orchestra Sorry for minor hijack but saw your EvE sig block. I'm heavily involved in that game. I fly for Veto...:kill::stir: Hijack over. RE: Quick ladder question... - Herr Straße Laufer - 06-02-2009 So, my 1949 ELO means most players will kick my butt? :chin:  Though, my .511 Win/Loss % says different. How does that happen? (And, a clue, it isn't from losing to players better or worse than me.) :kill::smg: There are flaws in ELO that do not particularly reflect "skills". :smoke: RR RE: Quick ladder question... - Kool Kat - 06-02-2009 MrRoadrunner Wrote:So, my 1949 ELO means most players will kick my butt? :chin: This CS player would not agree with your "interpretation" Ed?  MrRoadrunner Wrote:Though, my .511 Win/Loss % says different. How does that happen? Maybe folks can review both a player's Win/Loss % AND ELO rating to get an idea of a player's skill level? I've seen Win/Loss % "fudged" by players who only play less skilled opponents. :chin: MrRoadrunner Wrote:There are flaws in ELO that do not particularly reflect "skills". :smoke: Frankly, I never paid much attention to a player's ELO rating. Maybe the only sure "barometer" of an opponent's skill level is to play a game or two against that individual? :chin: |
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