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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2 h4 m9 I+ ^5 T5 R" `
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凯利指数的计算方法:    ( O1 m2 a  L3 d; F& D  k
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7 J9 l4 k$ x+ I( P3 UG3=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)
: b* \! Z0 E7 l4 A& h4 m  Z- ?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. [
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+ T$ M. r$ [  ^: N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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' W$ H6 Q+ k$ H2 X5 T( Z8 ]做下算术了:    2 i( y$ \  W: ~: {8 \" `
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(1)SSP:    2.22    3.15    3.01    : `4 u/ N9 a2 y  W3 e8 }9 n
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(2)立博:    2.10    3.25    3.00    , m0 R2 ?8 |# q
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(3)威廉:    2.20    3.10    2.87    : D' ~# K. v* J, ^* k$ [  t3 Y" G7 \3 E* J: P

# m9 m# a0 D( d* a2 X0 ?: }(4)易胜博:2.25    3.10    2.95    + M: J# k3 g! F5 c0 n# _; O3 Q" I5 a
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  |* O5 y  [: |& X" F9 X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    # ]& N( N# K. |/ b/ A5 D" S

' j/ C+ q9 x3 @* j* _S2=2.10    B2=3.25    F2=3.00   
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; R0 Y) s, M  A) WS3=2.20    B3=3.10    F3=2.87   
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3 p/ {: F8 W+ H8 g% j8 XS4=2.25    B14=3.10    F4=2.95    ! ~0 p7 C' v# @. v; y  G+ \! t( K& u' |. E4 L: {$ @+ I( i" f
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* S* A; N6 l, O1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01    =>    r1=0.91   
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7 H) I" ?: z9 ^" G. E+ E6 d- |1/r2=1/S2+1/B2+1/F2=1/2.10+1/3.25+1/3.00    =>    r2=0.90    # t0 ?( P  e* X% l
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1/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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3 S# M2 G) g7 H& n1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95    =>    r4=0.90   
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S1'=1/(S1*r1)=1/(2.22*0.91)=41    : W# q# m$ g# T
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  @' i7 Y' |! ?" \! ?0 K3 H  P$ N# q类似的计算后,于是:    # s3 M- z! s6 q8 s- Z8 M  j
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S1'=41    B1'=29    F1'=30;    4 o! N- P9 V0 R; [; i

% t# G( o+ t! o. n/ x; N  tS2'=43    B2'=28    F2'=30    3 e- T: x' @% _% l" w5 s
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: g1 Q; h& B! O8 R" w9 T/ ^0 kS3'=40    B3'=29    F3'=31    * _2 k3 O  @/ }  V2 X0 ^
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6 K6 _. a7 w. OS4'=40    B4'=29    F4'=31   
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& O9 h# z4 m" S( ~# A1 N& n  e6 K(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( i) `. R- T! F. d
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好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41   
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+ e+ i1 q" z6 K) N" w9 WB'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75   
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F'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5   
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于是:    / s+ X- G$ g6 i& P  E8 u9 j! |0 ?& h4 }1 G, ]2 |0 I# ^
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' J3 R6 ]3 o7 p: i2 Z" I) _/ DG31=S1*S'=2.22*41=91.02    ! B$ E, |, X) y+ M5 T( K5 T7 j$ Y9 [! u) }0 E
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G11=B1*B'=3.15*28.75=90.56   
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( x1 q) s1 Q2 S" v' f  H, W4 m! |G01=F1*F'=3.01*30.5=91.8    2 b6 B# O% q. }" I: W0 ]
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% G3 |' C% n) _7 ^/ y0 `, Q- h% M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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" n2 J) |5 P/ ~  ~3 t# x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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