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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑4 o1 N8 Y H9 a9 b* q7 @
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凯利指数的计算方法: ( O1 m2 a L3 d; F& D k
& l0 d2 ]' q0 L& |+ _3 J0 x B7 f
- G7 C! \, {5 t. c! [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). J8 i- i, w) J) F6 N
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. [
# l8 @6 [3 N" @# L& I% b/ o; V8 v. e
8 [ @& P9 M6 ?5 {* ?& t" ]0 @) w! L( u* H% h
" ?/ O9 y/ p5 z* N! D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!
, J( _- U, |/ q! E& {4 Y; W7 e6 Z/ _5 C5 S: K8 T8 s! X3 B8 r& }6 O0 ^
做下算术了: 2 i( y$ \ W: ~: {8 \" `- d! g, a3 o/ J8 x5 k/ N0 u
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! b/ A1 Z. i- P5 ~(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n
& @5 m& _3 O; P( K' e
$ L0 c6 [. T- K(2)立博: 2.10 3.25 3.00
2 f. o9 E' M3 J b: i" u/ b4 t" H# {7 v7 V d( T0 k
(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t' k' e8 e! r7 F3 y! q+ ?& F
$ ~. m/ w/ p& A; ]* \: R0 u(4)易胜博:2.25 3.10 2.95 & R2 U5 F: S# y- B4 w) g& t) X
- U+ {+ l. `) m% ~. _
! j* r. j: u4 e! S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 + {2 R8 O! i" X; b
5 F8 F, p$ }' ]( i% c
* D+ ^( N4 M( N: h# US1=2.22 B1=3.15 F1=3.01 + p9 |9 a/ [2 U d( O- i1 Q% Z
8 O8 s8 m$ k$ V" [* v+ F) f
S2=2.10 B2=3.25 F2=3.00
( @# Z$ I& n& N- J, } Y% ^# T/ X4 W2 j% ] s
1 m3 t: v, j+ x1 V0 ~S3=2.20 B3=3.10 F3=2.87
1 L; ?5 P, z) }9 k9 A' e& q. H7 B1 c9 S5 j
7 N3 u# g8 w' MS4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \
% o d9 G% ~8 v8 l8 w( d5 ` _0 H- N/ h7 V4 v9 c1 ^# L& g& x4 [# A7 R. h: ?
1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91
% c& h3 O* U% r# U ~3 T) u3 X% r5 }* W8 }' P4 z
1/r2=1/S2+1/B2+1/F2=1/2.10+1/3.25+1/3.00 => r2=0.90 # t0 ?( P e* X% l5 B7 V; Y- I; E \, f
+ V9 C! F$ @& v3 z
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' q4 V9 {; Q! \- t
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1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90
% j0 m1 k. _( [1 m/ a: G+ x9 Y- y- K6 r
; K2 G0 k" K: H- K6 M) G: J2 wS1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T/ Z* r7 z/ I! J+ E* J3 H
& G# s) E6 J A" \* w5 o! o类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j' I4 B8 Z- Y, T% |+ Z
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S1'=41 B1'=29 F1'=30;
: F1 p- l7 J) o$ j W. U: }/ C8 a: m8 T6 V( i! C3 _! e
S2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s
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3 @( T1 M: K* uS3'=40 B3'=29 F3'=31 $ u* l& f# A. G' Y9 D4 x
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6 D6 Y6 s& b) uS4'=40 B4'=29 F4'=31 & {( X; }( S' \& Y3 y' j
: B6 y" Y' M2 }4 T/ O0 g4 ~" G/ G/ l1 a, ?/ J8 `
(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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3 f: Q; X/ X: {% L# |" P" D7 o- ]) |# W好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41
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B'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75 + z% |7 m) Y4 M3 V5 U4 G
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F'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5
" Z1 |# D: ]6 m+ j; y( T% [6 ~0 {1 h( Y# p2 A
于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?
6 s3 b2 A1 D& p9 E ]' p: I. D7 h. {
! n! m- r; ^' t& H: iG31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M; t; T9 _$ U5 P
+ D$ n) P# X# M0 @+ [: Y: U' d
G11=B1*B'=3.15*28.75=90.56
! f) I1 F3 h! {1 X* H: ^3 S) H, [- L$ N+ Q
G01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]) k9 q3 v& r. H$ ^% R' Y6 g
0 | C ~( v3 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 \" O6 T, g8 s7 e
6 C* |* h W0 f7 S7 s3 A2 @. G$ i- X4 E" [9 a& O5 J2 k8 a U
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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