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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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# p  i" h& s7 Y7 E凯利指数的计算方法:    ( O1 m2 a  L3 d; F& D  k
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/ j" [4 M5 {1 E' }, f! HG3=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)) Q, o2 V' x3 _. y/ G
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. [3 n. J' ~1 Z3 ^

9 @8 s8 ]# Z5 o; I/ e+ m- `  K% P& t" ]0 @) w! L( u* H% h* I) V3 D9 Y8 \  e# g7 D1 {
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!    : R8 x# Z8 w- V8 u1 I5 \
7 e6 Z/ _5 C5 S: K8 T8 s
% a! f5 \- I( L* M, E4 Z3 L做下算术了:    2 i( y$ \  W: ~: {8 \" `5 X8 V$ g3 J% A7 y9 J9 m( E
; ~' L. y! k5 F, M& W+ d
+ R' y1 u! d3 [3 x  `. C$ F1 [/ E& N(1)SSP:    2.22    3.15    3.01    : `4 u/ N9 a2 y  W3 e8 }9 n; h6 h6 {  w8 `# d9 m
6 K% f/ w( D% F, @$ X( t
(2)立博:    2.10    3.25    3.00   
' }+ U5 o+ S8 j, Q9 t0 k4 H: S
! J3 a: A' B! S6 [2 J  o0 e3 d(3)威廉:    2.20    3.10    2.87    : D' ~# K. v* J, ^* k$ [  t
3 P1 x3 q2 K0 G
6 W& a; \# H+ k! S( S! E(4)易胜博:2.25    3.10    2.95   
2 ]/ Z" J; x2 T) J/ y( ?* T4 X" `- U+ {+ l. `) m% ~. _
$ e* d+ T& \5 l" x! |# F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    4 n" ^' K0 Z5 J6 g' n' [

1 W1 c/ }! ~8 l2 I1 j9 QS2=2.10    B2=3.25    F2=3.00    8 X3 b  }& g9 O. [/ ^* A
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S3=2.20    B3=3.10    F3=2.87    ' M: [5 _7 o8 M* d/ z
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S4=2.25    B14=3.10    F4=2.95    ! ~0 p7 C' v# @. v; y  G+ \
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, h: Q4 t8 D" M1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01    =>    r1=0.91   
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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) {5 F8 B+ S3 W, J$ _. i5 V! h
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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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1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95    =>    r4=0.90    7 i# l) P+ b5 r! W1 a* D* b
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, F$ D0 b! M8 j3 m" f. }4 ZS1'=1/(S1*r1)=1/(2.22*0.91)=41    : W# q# m$ g# T
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类似的计算后,于是:    # s3 M- z! s6 q8 s- Z8 M  j
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8 F0 X' A1 O+ Q! s% q# N' w- lS1'=41    B1'=29    F1'=30;   
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S2'=43    B2'=28    F2'=30    3 e- T: x' @% _% l" w5 s
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S3'=40    B3'=29    F3'=31   
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  m3 t) ?, w! t1 B$ R" JS4'=40    B4'=29    F4'=31    3 l4 ], x. _4 k7 `' {
: B6 y" Y' M2 }4 T/ O0 g4 ~
. _+ q' I; z# s( o(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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好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41    2 S4 W/ F, @* b' M- s
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B'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75   
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( f5 T8 p: ]0 Y9 IF'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5    : i3 n; x2 y3 Q9 M, p& _, n( U1 c
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于是:    / s+ X- G$ g6 i& P  E8 u9 j! |0 ?
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G31=S1*S'=2.22*41=91.02    ! B$ E, |, X) y+ M4 S: Q6 P& W# }& d& S7 m3 B' f" f$ b" {
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G11=B1*B'=3.15*28.75=90.56   
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G01=F1*F'=3.01*30.5=91.8    2 b6 B# O% q. }" I: W0 ]5 h! d( g2 n; _0 W. K" U: F

! u/ w3 d2 E+ C) F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 \# s) n% S- V! v7 U+ s: ?2 Y+ G
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0 m" W' E. V+ E) a  O' @( M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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3#
进来学习一下
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4#
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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