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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑" ~( ]+ V- I0 N/ o- s$ F
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) v! T# c0 n. O g2 d# ]凯利指数的计算方法: ( O1 m2 a L3 d; F& D k! w ~$ Y n; D
/ g P& N7 ]. A2 [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)4 C* S: u) Y+ \7 F
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. [7 T9 @: Q$ M3 E8 |( R8 E
+ L: A1 r( |/ g' n/ c9 H* x0 u6 E
& t" ]0 @) w! L( u* H% h
8 \( q2 ~" G& E: Q/ q9 A7 I8 } a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! ' [/ A# ~3 j/ a% r
7 e6 Z/ _5 C5 S: K8 T8 s
& P# S" `/ E: r5 d9 G r0 I v做下算术了: 2 i( y$ \ W: ~: {8 \" `
9 {! i$ v0 a4 ]# j/ z; ~' L. y! k5 F, M& W+ d2 X8 E& F" x8 B' ]4 w
(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n
( {* U, B$ }" C1 i2 p# G& D) ^5 n5 J; `7 L: X6 I8 H$ k. W
(2)立博: 2.10 3.25 3.00 ' B" |9 V* ^8 t: w# @1 @( h( g
- [; v; U6 Y a& Q(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t
* b: T% V2 u7 A6 [
1 `7 ]" w% y2 j) a; X: d5 ?5 g" C(4)易胜博:2.25 3.10 2.95 1 t, F* J; S) y7 z
- U+ {+ l. `) m% ~. _( k$ A. Y6 l, t9 ?8 ?! a I
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 * M W4 H: \: O1 }
5 F8 F, p$ }' ]( i% c
2 E& D) K- U ^: k5 g6 vS1=2.22 B1=3.15 F1=3.01 % z% l/ E. z! h; `4 |$ \# P P
4 v2 u V( T* l6 ~
S2=2.10 B2=3.25 F2=3.00 . v0 t( u. Y) E8 H
% ^# T/ X4 W2 j% ] s( q+ Y: B3 K3 b& `: A4 \5 l( f
S3=2.20 B3=3.10 F3=2.87 % p! @* r1 Z# O/ o0 L/ |( J
9 A' e& q. H7 B1 c9 S5 j0 v' L# B2 g. S
S4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \+ c0 w5 H; h- O7 t8 ]& @
8 w( d5 ` _0 H- N/ h7 V4 v
, j; X9 H0 `. p, G1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91 . \9 e7 q* Y! y# `' i' M5 k* A/ _
) |& r# e/ e" |. p; G5 l4 Q5 @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
! t: k3 k( M( _* c# B# i0 N$ C! v3 \' \9 K
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
& ^, F9 B# l) t& u* R9 C H
7 ]; p7 I) X( z1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90
% Q0 l1 a. p1 S: G+ x9 Y- y- K6 r
2 J% i, e% T( M v* j* u( g7 w0 HS1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T
0 h% d9 O/ _, U! b+ U4 [) K' ]. C
' h% k+ y6 b' ^9 q类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j% U3 M+ N9 ~; B7 }- d7 P( z- e, N
; d9 T) y7 ` U( s, QS1'=41 B1'=29 F1'=30; ! @. | S+ R6 l2 @; F
2 U$ @0 s) q' p' Z/ gS2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s, x' r# f- b! h. j7 b0 N9 @; K& ~
; m' V% T, u, P% O4 _! b( T/ y4 M" y
S3'=40 B3'=29 F3'=31
6 m; M4 i+ F- }& X! Q# F8 ~7 ]6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a1 l! I7 h8 X" `* P( d$ ?
S4'=40 B4'=29 F4'=31
! Y4 B1 \+ {) g% D3 k: B6 y" Y' M2 }4 T/ O0 g4 ~+ s( Y' j, @* h2 P7 R5 j/ z
(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- L3 R* \" n0 Q F
* R9 Y/ Q" p9 \- ?2 M/ J# l8 Y& ]8 ~' k- C
好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41
" ~* R% ]+ d4 k, H. N) ~) q( ], k9 L T& t( N3 T) J& Q8 ^
B'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75 ; E& B$ x9 M8 X* L) b
2 Y, f& w$ X* W/ h. E' M, N1 X& p# uF'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5
. w6 c6 [, B$ L; J% y
+ M# _' ^! l5 o* h# K9 f& l1 ]于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?: P# C l1 X, S# s* y9 i( `
9 E ]' p: I. D7 h. {
+ ? h! J8 e8 WG31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M9 y5 e7 N5 G; j! ?6 H
+ D$ n) P# X# M
: g6 r/ ]4 L, LG11=B1*B'=3.15*28.75=90.56 6 G; u! _2 A0 j; S& J1 l% v
5 O& z+ l- @+ PG01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]. w/ U% j( T1 g* t$ \8 ~8 I
" |9 G9 Q8 d& J' A' g d* m g: U
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 i4 p3 B" e; Z( `$ @) g& ]' K- ~( D+ X
6 C* |* h W0 f7 S7 s3 A2 @. G$ i+ v: b6 \+ x3 J
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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