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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  k
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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)! O# b9 b' e, S. c$ P
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" ]0 @) w! L( u* H% h+ i. F' ~7 r! ?# Z0 J. p7 j8 {$ B  H% z
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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, R3 o. O. t0 [* ]# _5 E做下算术了:    2 i( y$ \  W: ~: {8 \" `1 C- q% J* \' [: y
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(1)SSP:    2.22    3.15    3.01    : `4 u/ N9 a2 y  W3 e8 }9 n  [3 W# O: w  _1 C. ~) r) k
& @" S1 G9 K' X2 Q* S# e  \
(2)立博:    2.10    3.25    3.00   
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9 o" M# W6 C, M" P* E& Q1 }(3)威廉:    2.20    3.10    2.87    : D' ~# K. v* J, ^* k$ [  t
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; b9 S$ p5 _6 ~! Z(4)易胜博:2.25    3.10    2.95    1 v0 q! L" {: n! J
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0 G- Y- r! ~/ E  U; r5 A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   
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S2=2.10    B2=3.25    F2=3.00   
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2 y% U1 b; i3 j; U9 o$ n0 xS3=2.20    B3=3.10    F3=2.87    ) c1 l2 Q2 J+ U
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6 t4 H( q/ ~+ G% U4 z- GS4=2.25    B14=3.10    F4=2.95    ! ~0 p7 C' v# @. v; y  G+ \
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# d  S0 F" s" |. E9 T! B, j. L1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01    =>    r1=0.91    7 g/ T' u* S/ ~: `, m/ }+ j

0 r3 K/ Y# u0 z6 G1 k! f& O1/r2=1/S2+1/B2+1/F2=1/2.10+1/3.25+1/3.00    =>    r2=0.90    # t0 ?( P  e* X% l4 Z" o4 R; u5 g. c/ g! n! S

9 _# F; u$ R0 \9 i! [2 i1/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   
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$ t$ t1 r5 C. U2 \, BS1'=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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" B1 N+ O- n9 ^) S- M' i3 K/ rS1'=41    B1'=29    F1'=30;   
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/ M' G- c( y! |3 t) V; i& l9 q! DS2'=43    B2'=28    F2'=30    3 e- T: x' @% _% l" w5 s$ q  Z6 A# t( u( X0 J8 d% V& L3 j
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! h! V3 H& X" WS3'=40    B3'=29    F3'=31    6 ~! d6 t8 e0 b* `+ W
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8 s- j; s. b( }1 c+ \* `S4'=40    B4'=29    F4'=31   
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' s2 f$ p8 s$ D(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    8 W+ }/ h  H8 t4 G+ }+ z
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B'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75    9 J6 t9 T. p; b  y
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F'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5    + K/ f2 A: \. i6 k* B/ ]- F

8 E- ?' z, o0 e. V- W于是:    / s+ X- G$ g6 i& P  E8 u9 j! |0 ?# o' C0 ~2 r" q0 C" r
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; R/ {, T# G& W& S* IG31=S1*S'=2.22*41=91.02    ! B$ E, |, X) y+ M+ f4 u: E0 P+ a  [4 |; ], `! D/ O3 z
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, w2 h2 u8 L& W) O5 n" m4 zG11=B1*B'=3.15*28.75=90.56   
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: l0 x& {$ ?: i  X1 G  ^4 uG01=F1*F'=3.01*30.5=91.8    2 b6 B# O% q. }" I: W0 ]2 ]4 U1 x, g  Q1 y

8 d1 n! X8 x* A/ L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 \2 X' f" g7 x; y7 j8 z  a: z5 {
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) Q& v) L9 H/ g% Y* r$ C. e$ I, 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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