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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑
0 {) F5 m* |9 Z( b2 \* f/ a/ y4 p# R- a1 ^9 v! c1 ~7 h$ q8 _ Q4 K3 f! T
凯利指数的计算方法: ( O1 m2 a L3 d; F& D k$ O/ J! @. p( W3 p5 y& a; T
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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)" J: t# H& s+ z' y( S
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. [% P6 J0 _7 G" {
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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!
: c6 t, o* G' ^* W2 L: o1 q7 e6 Z/ _5 C5 S: K8 T8 s
6 ~$ V% A. Y( M# o( v+ {* K做下算术了: 2 i( y$ \ W: ~: {8 \" `
' S& Z; A4 @ X+ e/ a4 W3 E1 p( K( _; ~' L. y! k5 F, M& W+ d- E* U1 `8 u4 Q N# R& J" g" h
(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n8 z. p; V4 I& Y. \8 g
& N) Q) U* T! R* S$ G
(2)立博: 2.10 3.25 3.00 9 m* U9 i" @' [/ t$ A2 D9 \( `
' K8 J( t3 m8 P5 P(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
4 D3 s+ s( [! f) W- U+ {+ l. `) m% ~. _
6 q8 f2 i/ c: b6 }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 : r: f! M1 u" P: i0 r9 k
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) s7 U. K4 p |7 x8 n- I n7 B- `S1=2.22 B1=3.15 F1=3.01 3 M: v4 }2 F, G) K% F9 e
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S2=2.10 B2=3.25 F2=3.00 7 N( i5 M; D2 q% Y7 ?* k
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S3=2.20 B3=3.10 F3=2.87 - K/ P4 c( h m% C8 N4 O& m
9 A' e& q. H7 B1 c9 S5 j
+ Y7 }0 y; B/ u- FS4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \
8 k1 n0 \; |( \/ u5 w, ^8 w( d5 ` _0 H- N/ h7 V4 v
5 v' x* F; j7 d' o* M3 n# q1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91
6 @4 a1 s( e8 Q0 N( `$ f% H3 r$ e6 ~& C! a, X
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) A# A+ u& u/ s. K2 x# V" G I
2 C# k5 c! U0 C7 O1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90
2 ~$ B* r0 i$ l3 f: G+ x9 Y- y- K6 r1 Z$ M' q+ n' l0 l
S1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T& [: y5 x: H) }/ s" ~. \
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类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j7 }) G9 H# @$ Q7 l4 G5 L' M6 M T
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S1'=41 B1'=29 F1'=30;
! u \% u- ?, E- E3 H- j! t4 ^. l- {$ c% q
S2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s
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! {" B1 V7 g$ c, t* {& q( d1 MS3'=40 B3'=29 F3'=31
, ^6 Z5 q C- |; s! j* ?6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a
1 w& T- j" N- s2 |+ R" y* j1 F2 CS4'=40 B4'=29 F4'=31 2 x: t4 s: i* F! J {
: B6 y" Y' M2 }4 T/ O0 g4 ~) X. [( u0 S/ O% i. y* v' ~
(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, Y; ~- ?( v" H
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好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41 4 Q# P/ A# Z7 }5 h k6 O
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6 q7 C4 o# X) a9 F: \, J+ A" V9 cB'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75
2 C6 P* @8 C4 m# ]- t8 H* _ {- t e; D) O ^7 I" D2 j
F'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5
3 S A2 t! X: O) Y! K* `; l. C; F! e) C; K( `$ W
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+ M
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( t, G k) }- t: g bG11=B1*B'=3.15*28.75=90.56
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" H! n; W, q; G% { i: @. C: aG01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]3 |0 t0 C8 @, K B) s" `; i2 L
$ L. l$ Q2 v; L( Y( D
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 n* o) R7 Q5 S6 f, s: g
6 C* |* h W0 f7 S7 s3 A2 @. G$ i4 t. w: c% y2 S- u' Y5 j9 `
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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