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[体育菠菜心得方法] 埃罗预测法
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埃罗预测法的创始人是美国的物理学博士阿帕德?埃罗博士(Dr.Aroad Elo)。该方法最早的应用是用打分的方法对国际象棋比赛选手的实力进行对比,以此预测对弈的结果。在埃罗的著作《棋分高下:过去和现在》一书中对该方法做出了详细的说明。埃罗法对棋手的打分是以棋手的成绩走势为基础,当棋手的成绩稳步上升,得分就会增加,如果不断输棋,得分就会相应减少。象棋比赛是近乎于纯技术性的比赛,靠打分来预测棋手的实力具备一定科学道理,但即使是这样,埃罗法在实际操作中还是会出现一些偏差。因为棋手的水平和状态有时是起伏不定的,而一些不可预见的因素也会影响棋手的发挥或比赛结果。例如,低段位选手超常发挥而赢了棋王,或者高段位选手发挥失常而输棋等等。尽管如此,在大多数比赛中埃罗法还是能够比较准确地预测出比赛的结果,因此得以推广并流传至今。: u- ]" k. i/ D, D0 k
     后来,英国人杰奎斯?布莱克通过对1500场英超赛事的研究和论证,对埃罗法进行了改进和创新,并被广泛的应用于现今的足球比赛预测中。埃罗法的改进模型是通过分析球队的主客场积分情况来预测比赛结果。
8 r9 W/ I4 U/ t& ~* ^     一、积分差的分布( t8 v/ l, r, u# _
     杰奎斯?布莱克收集了英超和欧协杯1995-1996赛季的1500场比赛的资料,具体操作方法是用主场球队积分减去客场球队积分,并将积分差值分成若干档次。结果表明,这1500场比赛中有大约700场的比赛中两队之间的积分差值都很小,大致范围在+10和-10之内,而在这700场之外,分布就不那么集中了。其中主场球队积分高于客场球队积分30分以上的比赛只有50多场,而客场球队积分高出主场球队积分30分以上的情况也只有50场。
  f7 a/ C1 @: k" l; f+ d     二、积分差对主客场球队胜平负概率的影响
  O' K" R. D: H3 O     根据埃罗法的基本原理,主场球队的积分高出客场球队越多,则表明主场球队取胜的概率就越大,反之,主场球队取胜概率就会越低。最终总结出了如下分析方程式:
7 J/ {# f  K4 g  Q1 _! o/ b+ e      
( _, c; b$ i, D: _4 N& E% m# R     主场球队取胜可能性 =44.8%+(0.53%×两队积分差)7 R1 H  e$ W) C  v
     客场球队获胜可能性=24.5%-(0.39%×两队积分差)  w$ }2 L; N! X5 H
     根据方程式,我们举例说明其具体操作的方法。
6 S- k; c2 m4 e  @$ R3 r, B     例如:主场球队积分50分,客场球队积分40分。# T1 D# T% O5 I& b3 d! d: P
     第一步:得出双方积分差为50-40=10;
# R' o2 `/ P, ~8 U% ^7 G     第二步:主队取胜可能为44.8%+(0.53%×10)=50.10%;
3 ^0 L) z/ A0 |8 @9 E0 @) g     第三步:客队取胜可能为24.5%-(0.39%×10)=20.60%;
, F! Y1 r: S1 ]- S/ H; `     根据主客队获胜概率,分别被1减则可求出平局可能为1-0.50-0.206=29.4%。最终本场比赛的胜平负概率为:4 Y5 s5 g7 r! x) l2 [
  
8 Y9 N/ F9 W5 |4 O) k9 E) }+ D# T     主胜概率:50.10%1 Z) _, R0 I* \
     平局概率:29.40%* |7 i/ k4 C4 M, N) f
     客胜概率:20.60%
+ t& H0 L  z. |* I5 @  c3 n- E* J     例如:主场球队积分40分,客场球队积分50分。! y. k- P/ v4 P! K
     第一步:得出双方积分差为40-50=-109 Y" C/ z# }) L0 `
     第二步:主队取胜可能为44.8%+(0.53%×-10)=39.50%& F' ?# \$ R6 a3 w+ I" d  f3 y
     第三步:客队取胜可能为24.5%-(0.39%×-10)=28.40%4 j# r2 E1 G4 t" V# G1 w
     根据主客队获胜概率,分别被1减则可求出平局可能为1-0.395-0.284=32.10%。最终本场比赛的胜平负概率为:2 ?. K. L, y$ {
     主胜概率:39.50%5 x% C" S) H3 l0 u
     平局概率:32.10%' Y1 o( j1 Q0 E6 v
     客胜概率:28.40%5 R/ T; y& G9 U
     上述方程式的成立,是经过较复杂的推算过程完成的,在此简略,大家只要掌握这个公式和运算程序即可。通过埃罗法计算出的概率,不只是庄家预测比赛的分析工具,玩家也可以通过此方法对比赛的概率做出初步分析。同时,在掌握基本概率后,还可以通过得出的概率对赔率和盘口进行推算。
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谢谢楼主分享
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谢谢楼主分享!学习了
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主题回复处广告图案-天策传媒
数学公式没意思,几个看的懂
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感谢楼主的教学知识
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谢谢楼的的分享
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新人学习了,感谢楼主
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谢谢楼主的分享
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感谢楼主分享资料!
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