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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑- k: R" O8 Z5 P
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凯利指数的计算方法: ( O1 m2 a L3 d; F& D k
# T& i" {0 E3 X1 c( D- o9 n) ~) Q4 S; j
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)
: a S* L; d O% S6 G% V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. [
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& t" ]0 @) w! L( u* H% h
4 Q/ n6 N1 D+ t( ~$ T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!
, [, O9 y: R: x z; j2 c! `7 e6 Z/ _5 C5 S: K8 T8 s$ g6 c$ d3 D* i3 I d
做下算术了: 2 i( y$ \ W: ~: {8 \" `
' G% j$ c( P! v; ~' L. y! k5 F, M& W+ d7 N3 F! I, I- ? `4 p/ k; I
(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n! h( E+ \ K: s K4 O9 g
8 Q4 K* e j( G, N(2)立博: 2.10 3.25 3.00 6 E$ T% L1 _% g2 [- Z
% h4 ]+ v& X$ _/ d3 b1 H
(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t9 p7 _3 A. o: N+ Q
) ?" A. S( W- h: J" U5 e2 w(4)易胜博:2.25 3.10 2.95 2 M0 l1 x$ c* [8 D, r4 b
- U+ {+ l. `) m% ~. _
9 f4 h, K* y2 V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
5 w$ i+ c+ s R6 U5 F8 F, p$ }' ]( i% c
( K: Q6 r# Y$ }! \) dS1=2.22 B1=3.15 F1=3.01 2 ^# @0 @+ B: e
0 a: k3 p$ I0 q: ?: u/ Q. S
S2=2.10 B2=3.25 F2=3.00
! r- E2 f ^$ O8 ~. N0 z. [% ^# T/ X4 W2 j% ] s
) f& l8 F: y# |! o" HS3=2.20 B3=3.10 F3=2.87 % ]; Z9 C. A A9 f* R6 K
9 A' e& q. H7 B1 c9 S5 j K) b1 R" x( y) q6 I7 o) A
S4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \
' e# U `' E% x" V" x8 w( d5 ` _0 H- N/ h7 V4 v! y8 G0 Z( Y8 q: b+ B# ~3 q
1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91 - N: K7 z- z& x: o' }3 W& j# a
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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
8 u: l. b- {1 m% x. Q$ E- f
6 c% E/ z6 C U1/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
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' h7 Q+ J# e6 y' b1 l+ y1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90
0 }3 m1 B9 s8 ]( S2 p: G+ x9 Y- y- K6 r0 A& o' V" `: y7 G
S1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T8 C1 n7 A: t) \5 m
* Q1 W: c" R+ R3 D: x类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j- v; {3 e* P; f. l
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S1'=41 B1'=29 F1'=30;
9 Y3 c* r! R, b4 P3 Z
) w6 m! y5 S( b8 B5 {9 ?# XS2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s/ c5 v( f3 l0 i" X. H
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6 C) y3 Y7 s$ B4 q" FS3'=40 B3'=29 F3'=31 3 v/ ~1 N0 l4 i- \7 t
6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a; a! C& y2 k, M3 e) ~
S4'=40 B4'=29 F4'=31
% g6 H4 L, ^4 `$ {$ Z: B6 y" Y' M2 }4 T/ O0 g4 ~8 p! k, @, n* E6 U, Y3 j# O0 R7 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
2 ]+ b5 s4 q4 W: S' H: R% X* R9 Y/ Q" p9 \6 Y5 _, ~7 w; ?% a x, H5 q" A
好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41 + N" c+ u0 \# ?# }" f0 g- B
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6 w# ^. S1 v0 c& k- K1 {9 hB'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75
8 z1 s+ P! s- d% l2 ]4 B
4 a/ p. [% V7 E9 v. z, eF'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5
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4 ^) ?1 D: g m于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?& V- v' F# F) D5 ~$ ~
9 E ]' p: I. D7 h. {9 a0 r6 @8 P* @ ~/ l
G31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M/ Y( D9 g$ S3 Z
+ D$ n) P# X# M' v- [! E% _" [. h- U
G11=B1*B'=3.15*28.75=90.56
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" ]1 N, \ S5 `0 DG01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]6 @! J- ?# }4 c) n
. E g4 f: Q, ?! p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 \8 w) n) o4 ~" _: v2 k% M
6 C* |* h W0 f7 S7 s3 A2 @. G$ i& q. Y2 P0 H) P, d M
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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