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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑% p5 |6 X6 ~6 k7 ~, x: W
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凯利指数的计算方法: ( O1 m2 a L3 d; F& D k
0 |, V3 J9 @+ D+ n% X3 [# \
$ o$ T1 v+ N# e, |' W& ^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)
. k" T. o# M4 A# y5 w0 Q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. [( H( {/ S$ a5 B3 P
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& t" ]0 @) w! L( u* H% h
4 F, x t' R9 k" j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! B1 w; X" ?: @4 X8 w1 g1 r
7 e6 Z/ _5 C5 S: K8 T8 s6 J7 n& C# J/ {0 G
做下算术了: 2 i( y$ \ W: ~: {8 \" `$ _- e" i: f# {1 t
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(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n
1 W4 {- A4 I- y4 J- m2 q+ n! `7 k0 {3 `$ Y3 K
(2)立博: 2.10 3.25 3.00 / C, ?; |" u5 f# b ?$ ?" V& a9 p! V
7 A. ~* @& x9 w2 U! P6 ]& G9 Q# l(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t
: P0 t- D, |: k5 p- ?5 q
+ P+ {3 G4 P. J B8 j(4)易胜博:2.25 3.10 2.95 " I( ]+ _ Y) V! Z
- U+ {+ l. `) m% ~. _
4 l% p L' i9 ?1 s q+ k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 C; u9 h. L6 t( } s
5 F8 F, p$ }' ]( i% c
8 p, Q0 l3 x% a; ~5 P; d& L* ]S1=2.22 B1=3.15 F1=3.01 " e+ C0 p; n0 J" r
+ ~6 y' E4 q' x1 c; u+ r- E9 ]0 a( }
S2=2.10 B2=3.25 F2=3.00
Z- |. P7 G A2 A% ^# T/ X4 W2 j% ] s
3 M; q( s" R7 w+ H s1 c" {S3=2.20 B3=3.10 F3=2.87
! L( |' J+ P* g. T$ v" k6 p9 A' e& q. H7 B1 c9 S5 j9 C- H& q, D/ E( g- G
S4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \. Z2 \' X. b: \% z6 l9 X, D
8 w( d5 ` _0 H- N/ h7 V4 v* F$ ?, X M, n
1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91
% E/ P' B, X g+ p3 H2 t; d4 B8 c; T
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: O- N# @ W2 u, [
/ W) |: c. N9 {. X1/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
. h) K/ O T) j1 T h$ h: R3 [
; a) }1 V+ E2 d) v6 N: k6 O) w1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90 : j4 I+ |% C- k5 O- o, A$ o
: G+ x9 Y- y- K6 r
5 T, P) I* a8 |S1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T
- S0 u7 c4 R; k, V. L" |* g) w8 ~" Y: h Z4 x: `$ P" S1 ~
类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j+ @: L: U3 f% A! T$ a9 C2 O: L' g
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S1'=41 B1'=29 F1'=30;
" n, r2 z9 w7 \4 i8 k2 q. T# t" k7 @- i, e: \+ \
S2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s; f8 m4 G. v( }+ F% M
; m' V% T, u, P% O4 U0 C0 ~ n6 X: g+ s
S3'=40 B3'=29 F3'=31
, u/ [/ i6 Q5 R* j6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a
/ [; T& J! a* V* Y% n3 v& _S4'=40 B4'=29 F4'=31 : {: ]. Z" t! T' i/ H0 S" m
: B6 y" Y' M2 }4 T/ O0 g4 ~
' R4 Y$ Y+ C' y7 H: W(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$ i; o$ \7 U b3 s
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好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41
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/ h/ A8 w. R% E3 ?7 U: JB'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75
( c* I5 ^4 J8 q x$ O/ g
4 E: \/ x0 _$ |8 nF'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5 ' ?- [+ Z: w* P! H" B
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于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?
& O. ^- F* r3 E' X+ h. K. `" r* ~9 E ]' p: I. D7 h. {
0 }( l, {" Y2 Y9 ^* F3 l3 eG31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M( M& q* }" R, \( L8 G3 k0 B
+ D$ n) P# X# M9 @0 R2 o; ?0 n$ L) u
G11=B1*B'=3.15*28.75=90.56 7 o" {9 h4 O+ y* y* B
/ h* {. X( m/ ]
G01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]
; a% f- J+ Q% h0 m5 H) ]: X! C! C
. O4 O, m' k8 H& s `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 \
9 S& f+ j3 {8 s* l# S- L' @- _9 j6 C* |* h W0 f7 S7 s3 A2 @. G$ i9 t3 y( Z" w6 {8 f) ^1 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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