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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑8 }' t* D) _" L" p! x
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% `. t7 h+ F7 I凯利指数的计算方法: ( O1 m2 a L3 d; F& D k
' v9 O# Q4 T# ?, S. @7 x5 Z6 Z! w/ r R4 o+ m6 f: s
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), R6 ^5 S) m* R( E
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 D) _5 {3 Z l' i4 \( r0 W9 `
( ]5 v2 Y- P; e/ @6 r) v* Q$ z. @. P& t" ]0 @) w! L( u* H% h
/ Z6 Y& X% L& P q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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# u2 i* t$ L' X做下算术了: 2 i( y$ \ W: ~: {8 \" `5 ]2 Z6 f# k. b: ?
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7 D: y5 _! L+ K(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n
; M8 \5 D7 K4 v
+ f3 ^ N$ T+ R; u(2)立博: 2.10 3.25 3.00
, R9 Q0 U6 J. \' e9 m) i4 @: l" Z$ y& [8 ~: F3 @0 s
(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t" H0 X. p( a3 [. W# b# J
8 k. K2 T! s( S8 Z- @0 i
(4)易胜博:2.25 3.10 2.95 4 K9 f4 y1 p% U* V+ I
- U+ {+ l. `) m% ~. _
4 W: F0 p* r( K& ~$ |3 a U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 ) L- F5 ] i* G, G$ _/ A
5 F8 F, p$ }' ]( i% c4 q0 U+ u* X: g2 _7 g& b; a
S1=2.22 B1=3.15 F1=3.01
|3 w! J ~& X0 [- Z. U$ p! l. r4 l0 @9 f h$ t2 o
S2=2.10 B2=3.25 F2=3.00
) D5 }( a: ^; n; ?6 p" @% ^# T/ X4 W2 j% ] s: c3 L1 V' ]& k
S3=2.20 B3=3.10 F3=2.87
$ Y( N0 j6 ~5 ~" j9 A' e& q. H7 B1 c9 S5 j: C6 l: t4 A) K* |0 b
S4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \
+ J/ O( d( @, L# ^& V. V8 w( d5 ` _0 H- N/ h7 V4 v
- g1 e$ b% {% ]& B. U1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91 8 q- X( h# I6 y9 B9 j
) `1 F: j8 {+ B
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: a1 v# K2 N4 q* s' P7 L
% p' r" p' @$ l8 C/ h/ {8 r& G: p6 e; [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( m K5 `/ k! D
; o% _: g j7 Q- p1 n
1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90 0 ~) v+ b# `0 `7 W: I! [
: G+ x9 Y- y- K6 r& x9 N/ C: {( m$ L% {" m
S1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T- {& F. [; ], b% m+ z$ A
. Y) e/ i# }2 S" B8 \9 t类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j
6 a2 H" b' L, e; T: h
! V; N7 Z) [# F% g" {S1'=41 B1'=29 F1'=30;
* I. n- R* s% ~0 T8 i) F3 H/ e; l! L7 k( w( B) |7 B, k3 d V3 h4 K! Y; e
S2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s
( T" E: B' l7 Z" V1 e8 ^2 d0 g) d; m' V% T, u, P% O
' {* c9 I. M: g- wS3'=40 B3'=29 F3'=31 3 q/ `, M3 N" F" `8 N: s
6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a5 f) C5 \# I6 q8 E1 ^$ {1 z, W
S4'=40 B4'=29 F4'=31 % g+ M/ w2 F( \+ D
: B6 y" Y' M2 }4 T/ O0 g4 ~* j/ p3 K' g* G. N# D% {: 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
, f3 [5 [. t2 z( w9 I* R9 Y/ Q" p9 \3 q" w9 h4 n$ c
好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41
+ w9 ~8 K4 L$ `; V) q( ], k9 L T& t" H Q' i, S, Y' z: I; L4 O
B'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75 ' w% N7 P8 \, Z$ F7 r
& p2 x3 W# j6 _
F'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5 : n1 H8 ?7 ~$ D1 W* N2 a V6 R- G
/ ^4 u; W) f; e) n& k, k- M/ C于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?) I# B! u6 [+ A
9 E ]' p: I. D7 h. {
1 Y" L# r) G& ]7 oG31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M/ N2 q" A0 b( l2 P% f
+ D$ n) P# X# M
# B, \8 \7 u% W+ p4 F! u N* iG11=B1*B'=3.15*28.75=90.56 % U1 \, W5 _3 J8 {5 U; `
0 K. d/ x+ r0 Y1 Q v8 SG01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]
6 }0 p9 B- z; k- ^8 a% N; m5 `* G# W# M" O7 e8 h ]
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 \
4 T- K2 Z+ b/ G6 N1 u6 C* |* h W0 f7 S7 s3 A2 @. G$ i. r1 r! `: ?8 K0 ~) z# l
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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