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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑: P- J' v1 u. @4 s) m, k, U+ K
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凯利指数的计算方法: ( O1 m2 a L3 d; F& D k3 }1 O U" y! B
- V$ f0 F& p+ d* }. g
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)( M% \/ v, x: R8 \4 ?
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. [* X, q# c$ p) h! C& q3 F0 W
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& t" ]0 @) w! L( u* H% h1 u7 N. Y% R2 |) h* l9 I3 B
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!
# ^+ x" _& |9 A+ n' T" z/ \+ e; G7 e6 Z/ _5 C5 S: K8 T8 s
7 Y J, v, U$ J- @做下算术了: 2 i( y$ \ W: ~: {8 \" `% K2 y$ l5 f2 z0 I. p) ]7 s0 {" a
; ~' L. y! k5 F, M& W+ d, v" ]7 l- S# M; M
(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n3 y* v7 M+ L7 j# y+ p
9 L6 q3 \# H- U1 x(2)立博: 2.10 3.25 3.00 $ h) x: H* U) Z% ~+ A% m$ f* W7 R
: n+ P- R: H0 u* X5 ~* [. I, F
(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t
2 }9 P X( W. U' v5 {- N
6 U' l6 j6 r2 e7 M7 l(4)易胜博:2.25 3.10 2.95 8 `( R7 Y8 D: Z9 x$ K
- U+ {+ l. `) m% ~. _
# w# V! j9 K# z' j4 z0 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 7 g; |" T* \8 v) [; w0 y
5 F8 F, p$ }' ]( i% c
: ~, B$ L, c7 c0 Q% e! o9 H6 ZS1=2.22 B1=3.15 F1=3.01
( w) l- l8 }7 t. [1 Y) G# E. [+ }9 U. c, j% s2 ?7 L& y X8 l3 ]+ X
S2=2.10 B2=3.25 F2=3.00 / c, E# n( B6 E" K" D
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S3=2.20 B3=3.10 F3=2.87 * ~4 [8 y I; q4 ~& G, ~
9 A' e& q. H7 B1 c9 S5 j8 G1 _- @/ T! U( u+ w9 z
S4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \
6 ^, {' K% Y/ O3 J1 }6 l( | J8 w( d5 ` _0 H- N/ h7 V4 v
' i5 R" _ G4 x' V# s w: N1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91
0 J/ U' M! E/ x2 p3 Z; x9 T' C
' {0 U9 a5 s C/ p1/r2=1/S2+1/B2+1/F2=1/2.10+1/3.25+1/3.00 => r2=0.90 # t0 ?( P e* X% l
$ g* I) f; E. E2 r; l7 M: N% }5 v( ~
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
, I" Q- o6 W( |! @4 y4 u& r) [& }: G+ x9 Y- y- K6 r
8 v" ?2 Q d: b% R5 \/ U5 _% Y; tS1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T
0 K3 o: o; e1 U* D
% S" p! D+ D R. B# C9 |/ C类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j+ b3 _2 l# j) D- ^) m
; J, f/ W( h% Y# P* F6 ^S1'=41 B1'=29 F1'=30;
/ V8 B! Z5 W5 F( z: l! z3 |
! v& z$ U3 I' _+ s z+ A" e1 ?S2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s
3 B9 ?* {- o6 p' ?8 f3 s% |; m' V% T, u, P% O
2 C0 v7 H& L- X* E" R ?9 FS3'=40 B3'=29 F3'=31
% q- E0 f* |0 n' `. g6 B6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a7 C' Q3 B9 M8 a
S4'=40 B4'=29 F4'=31 ! {9 P6 T; m- ]4 p; r
: B6 y" Y' M2 }4 T/ O0 g4 ~
4 Q6 g8 F9 z1 i# Z. T+ @(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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) c- L. G/ Z: ^0 n# R% i好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41 * D! t& w2 Z4 |% Z) c% E6 V
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B'=(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
& z7 f, B- e, F6 f
1 I' A7 q) l: K3 V9 o于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?. a! _+ P' Y; x! k3 _8 k
9 E ]' p: I. D7 h. {7 }' N8 M, ]0 ^7 q( _
G31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M! J6 V* r) `. b1 i' T9 L
+ D$ n) P# X# M' o5 l3 x- k" f
G11=B1*B'=3.15*28.75=90.56 6 ]2 I2 e t( I+ {# ?$ H
: v' ^& d. k- Y: M4 c2 p7 N' UG01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]9 O. F7 G# O6 O) [8 p# Y
& a) \+ A, E3 ^8 l& F: `. K; t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 \
% L. p$ z1 D# o5 }6 C* |* h W0 f7 S7 s3 A2 @. G$ i
$ V( E/ O, c( X g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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