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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑
. V& h9 S5 T8 W7 f2 R6 Z* f/ a/ y4 p# R- a1 ^9 v! c
- N* j# D* x6 Z+ O( ^& E凯利指数的计算方法: ( O1 m2 a L3 d; F& D k0 Z! K0 R r( k
5 A% t8 K 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)
9 ]2 N' t8 [2 K. D& ^+ c! 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. [
* D5 w# s4 @6 N) y5 v1 h! e& I+ P! ], ]0 U7 c( |
& t" ]0 @) w! L( u* H% h! @5 [, b* C2 D* Z
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!
7 f& w T" b8 K0 q7 e6 Z/ _5 C5 S: K8 T8 s
. W5 O3 i1 Y+ H9 l Q做下算术了: 2 i( y$ \ W: ~: {8 \" `
- C, J, F8 G4 ?5 a' v; ~' L. y! k5 F, M& W+ d
@- o" e+ a h(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n
0 Y7 b4 q/ G0 `& l+ ]7 X" H* Y$ t9 r& H1 @
(2)立博: 2.10 3.25 3.00 * {- y9 S" w) X
" f$ Y) L3 V3 K7 @6 \" y% c" k0 c
(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t
8 h) b* F: j6 @6 y
) U3 s& Y5 d0 n6 a* t(4)易胜博:2.25 3.10 2.95 7 H. r9 R7 h$ i, e
- U+ {+ l. `) m% ~. _
$ p" c- r. \* }. [9 {0 H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
& s( P: _8 `% ~& z* |% {# d! W o0 F4 O% B5 F8 F, p$ }' ]( i% c/ p( I% P1 U/ p- k
S1=2.22 B1=3.15 F1=3.01
# C# s7 _/ U0 P5 E+ O9 w4 \3 b( j' x" {2 X, v8 o! \* w
S2=2.10 B2=3.25 F2=3.00
1 n1 z) c6 j$ l2 f9 E5 B, ^% ^# T/ X4 W2 j% ] s- Y1 C2 G( n% A7 T0 v! d, J
S3=2.20 B3=3.10 F3=2.87 1 U7 t: i' `- M n: P9 _
9 A' e& q. H7 B1 c9 S5 j
& ]+ f( u1 f; L$ w9 P; X4 |S4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \
( V( n- X1 L0 x' O4 h: S8 w( d5 ` _0 H- N/ h7 V4 v
# A, ~" t9 Z C# f* H1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91 ) q, X& s: u( l: p; C
p9 @0 D0 C P& P& S' F
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
' x6 W/ _5 h$ K0 N2 m/ H- B( o" Q4 S! B, ^
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, y% \: n: K: H8 T' _" J: Q
7 U9 }8 r" ]' z- `3 a1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90
* |, K! J. K' C: G+ x9 Y- y- K6 r
% V7 z4 P$ j) u7 I; a- x: O# IS1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T
* @1 ~2 {! H! R, d8 z. D# X4 n' |" D/ S( ?3 k+ b4 [
类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j
: h1 T. p/ G3 d' Z3 d% x
3 }+ `$ ~! x2 `- ]5 K$ X) ^S1'=41 B1'=29 F1'=30; 2 U0 l! @6 J4 S& Z# C
7 R8 ?0 E& x) Z) D" C/ a& l
S2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s
8 S/ j* `* S" f- E; m' V% T, u, P% O
# o( X8 G7 d7 H4 E! ?. qS3'=40 B3'=29 F3'=31
& j$ f1 u$ m O9 P9 j) f6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a: n% B% N8 u$ X8 X, D
S4'=40 B4'=29 F4'=31 : c; ^& \2 ~9 D- t' n* \
: B6 y" Y' M2 }4 T/ O0 g4 ~/ o- Z4 ^1 Y0 B* I( y' q+ s
(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( [. o5 |& ]7 P q$ ?: R, S' W
* R9 Y/ Q" p9 \* l- ?. A( r4 ^$ Q! x
好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41 ' ^% L3 }( Z" u# S, k3 _
) q( ], k9 L T& t- {/ R8 v0 V& L) D1 ]& y+ v8 c7 F
B'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75
& H. u$ d7 {! z" P
5 L# V7 l4 `, a. W; jF'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5 5 L# E1 ~7 N: f% X2 ^2 K
; i+ k9 [$ R! c) \
于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?
9 m& W+ R4 Q4 @! E9 E ]' p: I. D7 h. {, Q ]0 ?5 x$ G `" i" f+ D
G31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M* O/ p: t/ x8 q8 O9 o
+ D$ n) P# X# M9 |- P9 k2 G& q! r
G11=B1*B'=3.15*28.75=90.56 9 V( h1 p& J4 o; Q: P/ [9 r
. D5 j/ P: o' C6 U% ^G01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]
, g1 a5 s' Q6 w- @0 L! }4 D/ u5 a) T
- v4 y/ j( j" a/ _2 M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 \
/ k# b5 l+ b# J# Q% I6 C* |* h W0 f7 S7 s3 A2 @. G$ i& {& J5 ^) y, b0 U: O/ K5 h/ t/ Y
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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