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| | 本帖最后由 凯利之王 于 2009-7-13 09:48 编辑4 s! a" f4 K, i  _1 R: j * f/ a/ y4 p# R- a1 ^9 v! c
 8 v1 p8 A9 Q$ ^7 P; Y- S# Z凯利指数的计算方法:    ( O1 m2 a  L3 d; F& D  k1 R# x3 M0 _! {8 Y
 
 + z" q# r# N6 P  q& U! k+ MG3=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)- @) Y0 s' B+ Q7 a8 w
 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. [
 ; L# `, l( a, D! ]/ G+ @: q) I) g/ D/ L1 a: \
 & t" ]0 @) w! L( u* H% h) u$ [0 k% k& y
 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!
 ) t- |, j7 l. x6 v7 e6 Z/ _5 C5 S: K8 T8 s. A) ^: B6 ^, T
 做下算术了:    2 i( y$ \  W: ~: {8 \" `! b1 a4 C  M( O' w
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 (1)SSP:    2.22    3.15    3.01    : `4 u/ N9 a2 y  W3 e8 }9 n0 \+ ?# b+ z/ c' u, f/ Y( O( ~
 
 ! q  C( I0 S5 j8 d' v3 ](2)立博:    2.10    3.25    3.00    2 S0 ]* m) ^+ Z1 @. \6 A9 n
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 (3)威廉:    2.20    3.10    2.87    : D' ~# K. v* J, ^* k$ [  t
 1 B0 z' h, q6 K8 ?& D% M; G. K8 B. \- a  ]
 (4)易胜博:2.25    3.10    2.95    - N& N7 Q5 G" B9 ^- v' \  G. i
 - U+ {+ l. `) m% ~. _
 . L# M9 L1 g9 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    9 U# Y3 e7 ]1 s2 l5 @* Y0 i0 ?
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 S1=2.22    B1=3.15    F1=3.01    / X* h) Y  s7 F" A; b, w
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 S2=2.10    B2=3.25    F2=3.00
 9 k5 }& S% X' W) k- L4 G2 Q% m% ^# T/ X4 W2 j% ]  s
 + ?6 z0 @& I( p# Q! A* P  iS3=2.20    B3=3.10    F3=2.87    9 X: w+ F1 _! W& H: d: L- F, f
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 S4=2.25    B14=3.10    F4=2.95    ! ~0 p7 C' v# @. v; y  G+ \! \  e6 E* ?5 O9 y( W
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 + d0 {) A8 K2 S$ k5 h7 w1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01    =>    r1=0.91    4 ~3 N" \" P2 i) H: e& b* Z$ j3 m
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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) y. \* c% x# ^- ~0 x8 m
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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' }! l. j# t% I6 T* V
 5 F0 C9 n/ h, }* \. D' l
 1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95    =>    r4=0.90      q/ I+ p* A5 i% M% X% w
 : G+ x9 Y- y- K6 r
 7 A3 `! E+ n# \  J! \, hS1'=1/(S1*r1)=1/(2.22*0.91)=41    : W# q# m$ g# T# @) R6 o: f0 Y( n; ?) s
 1 v. v$ z0 D! g$ o$ J- {5 O
 类似的计算后,于是:    # s3 M- z! s6 q8 s- Z8 M  j% ?& G* T: }" S! E
 
 , ~% S- |( b2 G- G' BS1'=41    B1'=29    F1'=30;    - o; a4 a# `0 b& i4 Q7 K2 D, X4 ~+ d
 
 1 l9 s: y# C+ F2 tS2'=43    B2'=28    F2'=30    3 e- T: x' @% _% l" w5 s3 X- p4 _4 a9 n  n; f  ^1 Z
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 C% ~% S! ^2 _S3'=40    B3'=29    F3'=31
 / m1 u; [4 |# w1 Z# y5 b4 g6 z5 K/ n5 u, C9 L, h+ }+ O/ i% a3 _' Z: F! j; y6 Q2 |( Q
 S4'=40    B4'=29    F4'=31    ) W! |) q: V+ N# T" `' G: B
 : B6 y" Y' M2 }4 T/ O0 g4 ~; I0 z- p  m4 c1 P3 k2 y0 [
 (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. I! v, e# x3 r2 _  e: c5 H# ^
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 好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41    5 t9 h- n* o1 u* c4 a
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 " N( q) t7 t! sB'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75    8 L' ?: q7 B+ ?6 Y$ Y
 9 G+ u. U3 @! ~. I( |) n
 F'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5    ! e- @6 t+ e8 D5 K5 V0 d" K
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 于是:    / s+ X- G$ g6 i& P  E8 u9 j! |0 ?
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 . \3 \: l0 x) |- [/ }+ ~4 L* ?G31=S1*S'=2.22*41=91.02    ! B$ E, |, X) y+ M6 ^, _& n* X' \7 U8 l
 + D$ n) P# X# M/ D( s) m7 b- o! X3 H( J. b; Q
 G11=B1*B'=3.15*28.75=90.56
 9 S, [& O0 n+ B: _3 K8 }6 d# C
 9 p! s1 w6 E7 U& N6 p! o  }, bG01=F1*F'=3.01*30.5=91.8    2 b6 B# O% q. }" I: W0 ]
 ; E# Q7 Y- q: o1 x# y) j
 9 K9 u5 o5 J+ }- ?; 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 \
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 " d/ R3 R/ H; G; u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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当前离线
 
经验:  天策币:  活跃币:  策小分:  总在线: 100 小时 本月在线: 0 分钟 
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