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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑/ C9 S; ]; H3 i! n+ [ g7 c
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1 n$ K& A& g0 J' W凯利指数的计算方法: ( O1 m2 a L3 d; F& D k h9 n8 ^/ {+ I
% m; P% w: T8 d0 ZG3=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)1 ^* X1 ^- a# {. a/ c
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. [8 ^1 j9 Y# I$ s5 I) w: R
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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!
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做下算术了: 2 i( y$ \ W: ~: {8 \" `5 X& d$ S) M1 W; t' p3 U
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4 H8 c( f+ P& [# r0 P' y(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n4 V) C+ K3 b- r3 t
/ e# A& d( }: d; P0 ? m(2)立博: 2.10 3.25 3.00
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/ i) g/ m: V `. } x h; l(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t
# T0 r$ b' t F5 i7 ^$ R% n0 w6 i5 G
M R! ^5 [" F7 `, F(4)易胜博:2.25 3.10 2.95
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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
8 ] T7 [1 r0 W6 J) ^" l5 F8 F, p$ }' ]( i% c2 r. b6 P! N+ z& t7 }8 N7 M
S1=2.22 B1=3.15 F1=3.01
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S2=2.10 B2=3.25 F2=3.00
$ ?# w$ o0 w7 |. R1 ]% ^# T/ X4 W2 j% ] s
. |/ y, p, G3 K' \- X* zS3=2.20 B3=3.10 F3=2.87 + M- K0 {4 S1 a+ W
9 A' e& q. H7 B1 c9 S5 j/ G! ]) K4 \! b( y* R9 C
S4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \3 h: r' F6 ^! ^) f1 h
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1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91
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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" Z7 v% S* |7 |8 m* \
9 v; s$ F7 t7 s7 z1/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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; l0 o+ f/ X$ r/ `1 f b. ~* `1 [1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90
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8 U% K! g. F8 h2 f: D9 e- \S1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T( j: ?" I2 v, C
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类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j( u; P8 m8 B* l
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S1'=41 B1'=29 F1'=30; 3 I' s6 t. M2 P" {+ x3 \0 Z& t
+ Z/ C$ `$ P4 T" cS2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s
( Y R- B2 Q% K& _6 C2 O; m' V% T, u, P% O1 h/ j: R9 K. r5 V+ Q8 ^
S3'=40 B3'=29 F3'=31
4 y( q9 }) _: g0 \' k6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a
" j: z* i# P2 d* W# U8 RS4'=40 B4'=29 F4'=31 , a! b7 R/ t& M. Y3 i. a" [# @
: B6 y" Y' M2 }4 T/ O0 g4 ~ S- _1 j$ d2 x2 ~, \2 V8 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! k$ t/ [* t3 X: s( Q
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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 4 o( q0 \0 _' V; e7 b9 e
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F'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5 # u# q7 V) k8 |& K8 F
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于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?
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3 J; r7 P6 o+ C+ c6 u3 @& |5 DG31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M
# s8 t7 U1 S- g4 s- `! @$ q+ D$ n) P# X# M
$ }: e; a& e8 E& a$ w4 HG11=B1*B'=3.15*28.75=90.56 . p/ }: h! w6 P- K8 e+ R
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G01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]# { }# P2 f0 D
0 n+ l9 |% a2 y! e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 \
" S6 v3 T6 l; g: w; \0 W6 C* |* h W0 f7 S7 s3 A2 @. G$ i
0 E J, ]. G# y5 }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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