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[体育菠菜心得方法] 凯利指数的计算及在足彩中的运用
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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑
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凯利指数的计算方法:    ( O1 m2 a  L3 d; F& D  k0 h' Q& i: W+ v
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G3=S*S',G1=B*B',G0=F*F';(S:胜赔,B:平赔,F:负赔,S'欧平均胜率,B'欧平均平率,F'欧平均负率). G; x3 V6 |1 S5 D+ u
什么?对于一家特定的公司,它的主胜的凯利指数G3=S*S'!你选择的公司样本不同,G值就不同,样本大小不同,G值也不同(一般的欧均值都取99家公司,从统计学的意义上来讲,还称不上样本!)这个G带有随意性,大个0.05小个0.08之类的,也只能算做误差,现在要我比较G与0.89哪个大?我大你个0.05怎么了?我小你个0.08又有什么干系?  H% P+ \' B9 l  U8 T. [, ]. C4 d& l4 X4 A6 ^$ `* w4 @, b; `
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/ R7 m/ J2 l  X* ~. r既然涉及到平均胜率,那么看一下胜率是怎么求出来的:平均主胜率S'=(S1'+S2'+….Sn')/n,S1'是第一家公司的主胜率,S2'是第二家公司的主胜率,以此类推。主胜率S'=r/S(r:赔付率)。赔付率(返还率)又是这样求的:r=1/(1/S+1/B+1/F),什么??又做梦了!!返还率是庄家也要到裁判终场哨响才知道的,这样也行??AC米兰踢亚特兰大,哨响了,投注比固定了,但踢出3,这场返还率可能是150%,踢出1可能是20%,踢出0,可能是5%,结果不同,返还率也不同啊!这里也可以看到,博彩公司不喜欢操控比赛,因为他想操控的只能是这种强弱分明的比赛,但强队踢假球的成本更高,它想操控也操控不了,最好的选择就是烧烧香:天哪,爆个冷吧!   
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& {: `( ~* o1 o做下算术了:    2 i( y$ \  W: ~: {8 \" `% j+ q% l7 q; r1 M! A( F
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7 h' z; g5 F/ C# P4 f  }( ~+ A& p(1)SSP:    2.22    3.15    3.01    : `4 u/ N9 a2 y  W3 e8 }9 n+ h( M& H" q: ~6 v3 {
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(2)立博:    2.10    3.25    3.00    $ g2 `" {  f7 l( s

+ x1 v% w8 W. x(3)威廉:    2.20    3.10    2.87    : D' ~# K. v* J, ^* k$ [  t
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(4)易胜博:2.25    3.10    2.95   
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, b% V+ e9 I% M* \/ n2 H我们假设就取这四家公司为某场比赛开出的赔率来计算凯利值   
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S1=2.22    B1=3.15    F1=3.01    , z# E4 W% I( x/ }6 j& Q9 ~0 ]& b

1 d  F& R7 I) aS2=2.10    B2=3.25    F2=3.00    1 U8 K, m. W. @# j5 i* T+ L
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S3=2.20    B3=3.10    F3=2.87    ! M) d; X- r2 [6 @4 o5 m' p* M6 p0 C
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( ?1 S; W' Q, ^$ S1 n+ b/ [. c" DS4=2.25    B14=3.10    F4=2.95    ! ~0 p7 C' v# @. v; y  G+ \) m- B! g2 S8 }4 a" U
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+ T! H% f3 k/ m+ O4 C1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01    =>    r1=0.91    ' M2 |; `: x/ A) u! u& v. @

$ W! }# e# F8 B6 S1/r2=1/S2+1/B2+1/F2=1/2.10+1/3.25+1/3.00    =>    r2=0.90    # t0 ?( P  e* X% l% H& l! ?2 f& J# p

  |) H! C& |( I1 Q$ X# D1/r3=1/S3+1/B3+1/F3=1/2.20+1/3.10+1/2.87    =>    r3=0.89    % h8 r* k9 }8 X/ Q5 J' q
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$ [* h: {& f: W1 Q$ x) z1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95    =>    r4=0.90    ! ~9 l2 o; [( R6 W: _
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. q8 t+ U7 @+ A5 z: sS1'=1/(S1*r1)=1/(2.22*0.91)=41    : W# q# m$ g# T
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+ E# O/ I+ [% O# Q0 o类似的计算后,于是:    # s3 M- z! s6 q8 s- Z8 M  j3 X+ @. T! D- {( ?8 T6 ^- k
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S1'=41    B1'=29    F1'=30;    % n( C" X; e: N& @7 o
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S2'=43    B2'=28    F2'=30    3 e- T: x' @% _% l" w5 s5 i# m/ Z" k" A) p
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S3'=40    B3'=29    F3'=31    3 a, x3 N; G0 H8 ]: E; u$ O
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$ M+ q# ~+ x% J' V4 Q6 eS4'=40    B4'=29    F4'=31    3 v0 n3 a$ v" b
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+ y5 p# u, _& U( J5 S(注意:3,4两家公司,赔率不同,但它们的胜,平,负率相同了)    8 [+ b0 b& X# U( [. o
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% h7 C% E# {6 c3 P" m6 k4 s. O好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41   
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: l/ X$ i7 U' X5 X  jB'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75   
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. a3 o5 B8 ?* k1 H9 e5 Q/ bF'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5   
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2 E* r3 ^% v5 ?8 _  A1 g: X# [于是:    / s+ X- G$ g6 i& P  E8 u9 j! |0 ?: u/ G! z6 p& X% k7 T+ m- D
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# H/ {2 e; }( X: \/ YG31=S1*S'=2.22*41=91.02    ! B$ E, |, X) y+ M
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  t8 c! c' Y9 ~$ Q& e9 ^' hG11=B1*B'=3.15*28.75=90.56   
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1 B% n3 p% y& |/ [" f+ YG01=F1*F'=3.01*30.5=91.8    2 b6 B# O% q. }" I: W0 ]" l! O3 R, F" L7 N( u. p( d' D

2 q* X. f( F" r当然其它几家公司的凯利值也可以通过同样的方法求得,当然,事实上你不用去求(每场比赛这样求,不累死也气死了),赔率比较网站上都是这样算的。    好,到这里你应该可以知道了,凯利指数是怎么样被扭曲的了,因为除了赔率是真的,其它的都是做梦的时候梦到的(并非是攻击凯利指数,这个,前文和接下来的一比较就可以发现了)。    + J& N& @* n# J/ ]6 \
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. c: V% V1 a$ o* m. b! ?通过对多家凯利指数的对比统计分析可以找出,数值变化与赛果之间的微妙关系,在足彩分析投注中能把握更多的冷门机会。
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数值变化与赛果之间的微妙关系,在足彩分析投注中能把握更多的冷门机会。
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进来学习一下
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这个太深奥了,看不懂
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主题回复处广告图案-天策传媒
这么高深 概率论研究的很好啊
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