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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑; r, {/ k c, k+ ^ B6 C, i' D# @6 Y" y
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5 O3 m# }8 P! P凯利指数的计算方法: ( O1 m2 a L3 d; F& D k8 e& e3 W. _) t. ~- B
4 l. B7 y; O8 i6 X" v$ YG3=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)0 {* w8 U* z9 K) V, b& F |
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. [
; v L# d% `% V, r( @" z2 q4 z# {9 E9 s1 C* M
& t" ]0 @) w! L( u* H% h6 X' P0 M* L2 }+ X6 [( v$ ^$ `
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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3 P! W2 q* |& J/ R. N* ~做下算术了: 2 i( y$ \ W: ~: {8 \" `9 |6 D$ d& x- w L! o; i
; ~' L. y! k5 F, M& W+ d4 C/ V6 ?5 ?# r
(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n
# b$ u1 G7 P9 A* l. ^+ k1 h: x2 @. m) e% h! r3 _! l" P2 x
(2)立博: 2.10 3.25 3.00 4 B# h3 N2 M( N4 D/ ~- O* y+ Y. f
% Y3 m& Z# f( N- O! T8 H) \" E
(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t" U% W3 N, d/ l/ D
0 G+ U5 q2 \4 H7 v {+ E(4)易胜博:2.25 3.10 2.95
- I: }# b7 h/ f( j$ Y- U+ {+ l. `) m% ~. _ H- A j5 d- _# w; 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
( W9 H2 S8 B+ H+ J4 ^6 k5 F8 F, p$ }' ]( i% c
/ |1 g. t/ p' W' `S1=2.22 B1=3.15 F1=3.01
3 s, G3 ]2 W7 n5 b, |- A) p' n7 u j s* O
S2=2.10 B2=3.25 F2=3.00
; u6 s% D# y# v% ^# T/ X4 W2 j% ] s
, e6 U- N; N1 N& r2 P' VS3=2.20 B3=3.10 F3=2.87
/ M5 [3 P5 [5 {) [' E. K7 K1 p7 Q9 A' e& q. H7 B1 c9 S5 j
9 a' `9 E B1 g! `0 Z7 x: FS4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \, g% X; Z+ F1 P8 _+ s9 m }
8 w( d5 ` _0 H- N/ h7 V4 v
$ a5 o8 p' G, f) v& |( V) B1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91 8 R6 u' R8 a* }) t9 h/ |7 B9 P* Z" r
5 M5 r2 w8 K4 ^) w) P. A
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
4 s9 }0 j4 U& ^0 w! D. A$ b
: J5 m. ]2 F: `$ h/ ~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- R8 s# U# y) f: W
6 s& q9 j6 _% K+ {1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90 $ G1 v( @* N, ?5 L
: G+ x9 Y- y- K6 r
/ B, a/ t0 r! R- `S1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T
1 Z G5 K* L& K8 A( P
# }" c m# K. a, U ?( v1 N类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j
7 N! r6 l& o! b W! j! P% f
% e6 G( G ~4 \, U6 j2 ES1'=41 B1'=29 F1'=30;
) A2 k" _- Z! b% w' u. v8 i6 r9 E+ e0 f% k! j6 d* U) `
S2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s
; ^0 A {: {- r3 m" X' q& w; m' V% T, u, P% O
0 P0 Z! o6 d0 `$ P4 i7 gS3'=40 B3'=29 F3'=31
8 Y" E% E3 ~! `$ R4 c# @) z6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a4 h$ t& s, Y! V* i- M
S4'=40 B4'=29 F4'=31
^: N3 Y2 H) z; c; Q& K, M8 ^; @: B6 y" Y' M2 }4 T/ O0 g4 ~
5 K5 o2 E* p7 w1 U* `2 v(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
" z& f# ^7 @2 B+ i- M* R9 Y/ Q" p9 \
* l) p+ Z" R; H. ~5 M' ~好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41 ( U# `6 B3 Z4 r
) q( ], k9 L T& t3 I# y; e0 t S$ _9 u" p
B'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75 2 g% ]- { U& h0 B. \$ q: F
- E; i' k+ a" ~, _F'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5 / C4 b! G0 n' V* X
* L u* @' W1 Q: k于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ?
I0 Z" S9 w- ~3 K0 b7 S0 f9 E ]' p: I. D7 h. {" e- F: i! M7 J$ l; X; d- V* }
G31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M- A/ K8 ?- A9 s1 D Z, [
+ D$ n) P# X# M
c5 X& u* s) F% zG11=B1*B'=3.15*28.75=90.56 ! ]! h) Z! N# F% q( t6 n
. A2 E$ d* ~- K6 a2 a% V; U- EG01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]1 V* K* m3 k0 o7 S
5 v* o3 S. h* J5 ]% \: \7 B/ _6 l
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 \
0 N& q, }* B% a0 t, _6 C* |* h W0 f7 S7 s3 A2 @. G$ i1 V; `; `# H! G1 Q. j- _
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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