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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑- [8 _9 ~2 [, L' m
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凯利指数的计算方法: ( O1 m2 a L3 d; F& D k* V0 U: n8 ^, n2 L, W7 m3 t& J
& S5 p8 G" U, c0 J# H @7 c' }: iG3=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)
; U1 S* M0 t1 M6 h4 I( Q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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5 i, a, G- L' f: X+ R& t" ]0 @) w! L( u* H% h! S& x {; x1 g1 u5 J# o
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!
M/ r d0 w | l5 `+ ?7 K( M7 e6 Z/ _5 C5 S: K8 T8 s! F$ r% V* y+ ~! W/ J- J2 H' L0 q
做下算术了: 2 i( y$ \ W: ~: {8 \" `3 H$ r- H% |; v) K6 Z
; ~' L. y! k5 F, M& W+ d: J ^& ~* [$ S
(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n
9 t" a b& F* W7 [: m1 `- H! b# K1 H/ n3 b- I+ K0 X
(2)立博: 2.10 3.25 3.00
' K7 I% B0 J8 D! m' {; Y$ |# C! H2 t- S) _
(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t
& m7 g( `% O) O' A) r- n U- \5 {! f0 [( o% ?
(4)易胜博:2.25 3.10 2.95 ' c9 H% M( q6 c! T" I% i
- U+ {+ l. `) m% ~. _
& L z+ L# H$ A( V) o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 # W8 s; h1 C: ~, q& m( ] q& I+ C
5 F8 F, p$ }' ]( i% c
. @8 }3 r; |+ F1 R& \& l: mS1=2.22 B1=3.15 F1=3.01
* ~8 i" D) ^2 K2 m7 w
! V8 J6 T! r$ G: ~ U" ]S2=2.10 B2=3.25 F2=3.00 1 | H& r) Z9 {( V# ?1 L+ E
% ^# T/ X4 W2 j% ] s
1 @( `4 P9 p# p, u) D8 R7 [S3=2.20 B3=3.10 F3=2.87
( h* ?5 J, Y9 C9 Q( m( {9 A' e& q. H7 B1 c9 S5 j6 E% Z1 P# f/ b; [' e( d
S4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \
6 s- _; _! ~1 [" ]8 w( d5 ` _0 H- N/ h7 V4 v$ G5 W, ^: {/ v. ?; P9 ?$ `2 e+ ^
1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91 " j& | G9 m. i' [: d
; a2 i2 b% D. i7 L
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% ?& h2 Y2 N- v; L
1 y/ A- r! @9 l7 f2 W& a; ?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
& q7 ~, t! y3 N9 f/ N7 S9 ~5 h2 N; Y0 u
1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90
4 c5 j. M; B" p' D5 i% S1 b6 Y* A: G+ x9 Y- y- K6 r
) m; K9 @) Y! K+ y) V' u* @. |S1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T' x7 G# k L Z0 p& n
/ n# D& e) Y7 |8 U类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j7 j) r( }+ u9 j& V9 g- c
- j6 L6 a" F$ Z& B5 g; B. V5 x/ X* RS1'=41 B1'=29 F1'=30;
" k% f, r" F @% Y; K# F1 {
7 @4 `+ t- U0 r5 v6 r. u5 tS2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s
; P- Y/ X( A# [( o" s% g8 X0 i; m' V% T, u, P% O. U g. V7 F& q6 N, Y3 U& O
S3'=40 B3'=29 F3'=31
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3 Z% a$ H$ I% o5 D! [* K% a0 L, k1 V5 @S4'=40 B4'=29 F4'=31
% l E, g4 a3 t+ t$ v; l: B6 y" Y' M2 }4 T/ O0 g4 ~( U" w i4 C- _- U7 b6 I( J' _
(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, S2 X/ [5 z* c
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好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41
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: p- p# j0 _0 B5 M4 ?B'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75
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F'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5
" X+ D7 U# d; M! ^
( o" ^) {, ]9 S2 A; d& U# Q5 s于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?& Q5 z5 s& Q5 F( n, T
9 E ]' p: I. D7 h. {
8 ~, i9 ^& ~( b( C" ]G31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M; i" }) F" b. \( S( |
+ D$ n) P# X# M
5 G: Q' `% R" [0 G* ]G11=B1*B'=3.15*28.75=90.56 0 M6 M/ i) t* l3 F
# }4 y& m2 r" d6 n1 M: h! B
G01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]
% ^4 F+ N+ }4 e8 {- h2 T5 z# h6 E, [7 M( v
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 \$ V: p! O1 ~' C$ C$ U T
6 C* |* h W0 f7 S7 s3 A2 @. G$ i; G: ^" x1 h& F! O
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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