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Middle of the night, wow look at wikipdia in the introduction, see the arena in which the introduction of ELO mentioned in this system, link the past study a little,aoin kinah, basically figured out, beginning to open the domestic arena, most of the players this is not very understanding, seemingly did not see this explained the old paste, I do the next roughly translated, of course, attached to the senior veterans is no nutrition. Elo rating system This system is used to calculate the relative skill level players, the game is usually used for games such as chess, Go * Note 1. Elo, not an acronym, but the system is the inventor’s name,wow us gold, which is itself a modified chess scoring system, now widely used in many games. Such as Age of Empires 3, Star, Warcraft 3, unreal, guild wars and so on. Formation model in 1 Elo assume that each player’s performance in each game disc is a normally distributed random variables, although in a different player to play the game can vary widely, but each player’s performance over time, the average change is small. elo average of random variables to represent the true level of players. (This sentence basically no meaning) 2 elo with Shengping Fu to evaluate players in a performance of a game, you play to win is this better than the opponent, on the contrary is bad. (Win on points, lost on points, not draw points), it is because you can not move from one hand to evaluate the quality of a player’s level, a good move down the hand, or a string of tesujis give 2000 points assessment, is obviously very difficult convincing. This is roughly two to build the model, of course, simplified. . To simplify the calculation of elo has a true skill value to each player, of course, this value there are many optimization algorithms, with nothing of Warcraft. Interested students can refer to the xbox live online in an algorithm research.microsoft / mlp / apg / trueskill.aspx [research.microsoft / mlp / apg / trueskill.aspxtrue skill]. Mathematical formula to the topic, and take notes. . Ra: A players current rating Rb: B players currently ratingSa: the actual outcome value, wins = 1 level = 0.5 negative = 0Ea: A player’s expected outcome value, EA = 1 / (1 +10 ^ [(Rb -Ra) / 400]) Eb: the outcome of the expected value of player B EB = 1 / (1 +10 ^ [(Ra-Rb) / 400]) Ea + Eb = 1E is the estimated value of winning, so Ea + Eb = 1, K: every game to get the maximum rating, World of Warcraft k = 32 * Note 2R’a A players game after ratingR’a = Ra + K (Sa-Ea) for example to explain the A Team 1500 points, B Team 1600, the estimated value of A winning team Ea = 1 / (1 +10 ^ [(1600-1500) / 400]) = 0.36 Suppose Team A wins,gold sellers, the actual outcome of the value of Sa = 1A the final team score of R’a = 1500 + 32 * (1-0.36) = 1500 +20.5 = 1520, winning 20 points Team B lost 20 points. Suppose B team win, Team B estimates the value of Eb = 0.64B team winning the final score of R’b = 1600 + 32 * (1-0.64) = 1600 + 11.52 = 1612, winning 12 points, A team lost 12 points . This is why you win more than a high score unit, the transmission loss is also more low-scoring, scores very few low-scoring win. In fact, the value of K is the limit of this equation, so in theory you can win a team of up to 32 points, in fact, is almost 29-30, and won no points is possible. Draw in wow arena may also occur, while the last two players to death, then do not score. Some analysis of chess rating wow this part is not particularly large with the relationship used refer to the following. United States Chess Federation to develop the score and the title of the standard, is also a 1500 basis points: * Master * 2400 and more Super 2200–2399 Master * 2000–2199 experts * 1800 – 1999 Class A * 1600 – 1799 Class B * 1400 – 1599 Class C * 1200 – 1399 Class D * 1000 – 1199 Class E 19 743 people worldwide have more than 2200, 1868 people 2400-2499,wow gold safe,563 were 2500-2599, 2700-2799 123 2600-2699,18 people, only 4 who hit over 2800. Including chess champion Garry Kasparov. Deep Blue computer, then if you score over 2800 estimates also count. According to this, count how many chess player pool, wow arena player pool will be able to know how many wow arena points to what can broadly red, now it seems 2600 is the limit, that is a lot of people were in the large group on the server Of course, the players rushed to the 2800 China I would not be unexpected. Roughly translated, add some comments, be the first draft translated, wikipedia article is not on the Chinese, other languages ​​have. . Note 1 Go do not in fact the system, with Dan this is a relatively vague concept in itself is more than chess because chess / chess flag of a more abstract game 2 wow in two k-values ​​can be projected 1500 team competition, winning or losing a 16, so k = 32.