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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑5 U. M2 w1 a2 C' `, T: o
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) U5 r+ i( }. k- W, r7 M) [! [) V9 ]凯利指数的计算方法: ( O1 m2 a L3 d; F& D k( F' e0 d- h: g" s/ n, r! L, x4 G
/ r0 `1 N9 q# |1 |' BG3=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)- I: e. ` O* n8 J$ n+ H
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. [2 K+ U7 h! E) o8 m5 h+ Z/ S
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& t" ]0 @) w! L( u* H% h% h3 g! Z0 u0 g+ G" e0 C; `1 P
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! ( s8 L( E( |5 t1 n& `" I! l: H4 v
7 e6 Z/ _5 C5 S: K8 T8 s/ {& G9 Q2 `8 Q8 p) B+ g. R; P$ K
做下算术了: 2 i( y$ \ W: ~: {8 \" `
' F! L5 a6 d5 [5 |2 q; ~' L. y! k5 F, M& W+ d4 X# t3 g0 i7 M1 W
(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n
) R0 g2 d0 O+ g2 G+ K* |% s% j. ~# a9 I, y
(2)立博: 2.10 3.25 3.00
# j) S, h# }! \
% i2 M: Z! |" X' S3 Q- i(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t
2 N, z6 v q) _! c' y) E; ~' F
9 ^/ O9 L4 [" Q4 r. s" `( L(4)易胜博:2.25 3.10 2.95 9 i0 y9 Z: `& L( l: p
- U+ {+ l. `) m% ~. _
- z' W! c t# W. N3 o. c7 A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
; [0 {; b% M9 i- W9 q5 F8 F, p$ }' ]( i% c
5 n! r N6 A# A( NS1=2.22 B1=3.15 F1=3.01
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S2=2.10 B2=3.25 F2=3.00 0 X7 p* w2 m" B' W7 J% p
% ^# T/ X4 W2 j% ] s
; ]- ]7 r+ Q' s7 m, Q/ BS3=2.20 B3=3.10 F3=2.87
( v! |# y: t3 y3 V% ?; y0 Q9 A' e& q. H7 B1 c9 S5 j
* H: \7 |! F' G$ h* n$ @+ MS4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \- b& k; ?5 m9 Y9 }- R4 X
8 w( d5 ` _0 H- N/ h7 V4 v
- c3 D# `4 f; I0 M }1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91
. M4 @9 }: ]/ U0 V4 Q0 v$ x. d
/ q% q0 Y; r# C* m, q" L$ W1/r2=1/S2+1/B2+1/F2=1/2.10+1/3.25+1/3.00 => r2=0.90 # t0 ?( P e* X% l3 k2 s& p4 O1 }! E( ?2 r# w
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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. W2 {# G. Z/ c4 t$ b
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1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90 ) o% {3 t5 W4 @) L2 t7 U$ V
: G+ x9 Y- y- K6 r
4 g% F' v ?# h, r. ?, A y! mS1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T& x3 a! E. A; {
7 y/ O9 Y0 N1 Q9 z, V5 R" x+ V1 w
类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j
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( B( J" k. s5 S6 n6 aS1'=41 B1'=29 F1'=30;
! t* S& H5 A* ^+ _0 s Y8 \
& K5 U% C' h: k8 x: Y! e4 CS2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s
* p' w' {; Z1 N( L, G/ u; m' V% T, u, P% O
, o# j! i( Z' y3 U1 ^ ^S3'=40 B3'=29 F3'=31 ) R; _! b5 |/ O
6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a
! i- f2 ]0 c; f8 e* x* F! US4'=40 B4'=29 F4'=31 # O/ J. Z. Q+ J
: B6 y" Y' M2 }4 T/ O0 g4 ~
2 L( C7 a1 O# @ y(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
1 x* p4 \% Q6 a9 J: z/ {6 K* R9 Y/ Q" p9 \
+ Z' Z- ?( \1 m: {+ G& i4 e好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41
" `2 o; `4 w6 l8 D" H N* E0 x) q( ], k9 L T& t" y, s% ~ a, `
B'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75 9 n, T4 b% j P- f3 H/ h% g
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F'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5 1 p$ z8 y u# I: {
& e+ j: G: W7 D$ q5 s
于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?
: T9 ^& H2 n* |5 K9 f1 ^3 K! o9 E ]' p: I. D7 h. {* V6 F y0 z) [0 G& L, C8 e
G31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M
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G11=B1*B'=3.15*28.75=90.56
, }2 s. d/ Y% u1 N4 U2 ~. C4 Y2 ?, C/ ^
G01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]! u3 o2 A! f: t8 c5 Z2 g4 J% l
+ N7 X1 y9 a4 W/ x7 w
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 \+ V4 ~7 A& t* ~7 g/ P, F( B( U
6 C* |* h W0 f7 S7 s3 A2 @. G$ i
* y& S* B* ~9 ]$ P- A2 O5 k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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