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本帖最后由 凯利之王 于 2009-7-13 09:48 编辑" n" d* u6 m! d) F2 P
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3 d; |9 g$ S$ d凯利指数的计算方法: ( O1 m2 a L3 d; F& D k% H0 C. J! i3 p3 l ~
! T' t- \, }; n: ~: [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)" E2 T0 }# Y! u) _! n8 k
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. [! X7 ?2 v$ y+ [4 j
$ l5 Q3 D. d( S6 q( m) w
& t" ]0 @) w! L( u* H% h
% m: K) x! O* ~& ^, 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! ; U- V2 t. j$ h D& ]
7 e6 Z/ _5 C5 S: K8 T8 s
( F6 b5 a8 P0 z0 _# c* `做下算术了: 2 i( y$ \ W: ~: {8 \" `
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(1)SSP: 2.22 3.15 3.01 : `4 u/ N9 a2 y W3 e8 }9 n
2 l5 }7 C1 u+ O- S& J2 h9 a
6 G# W1 w) ~& h7 M(2)立博: 2.10 3.25 3.00 : M% c( B: f+ u/ }' m" }
( M" K- g( d! r+ C(3)威廉: 2.20 3.10 2.87 : D' ~# K. v* J, ^* k$ [ t
4 R- U9 \8 l) C1 M6 p. A9 C
8 c) p1 |; i* d7 L( }( l& B: [(4)易胜博:2.25 3.10 2.95
. r! _$ O; E" h- Y& m, P- U+ {+ l. `) m% ~. _
# ^) N" w) Z( H4 @0 k/ g4 Z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: A( q5 M" N* _. z: ]+ P: b; B
5 F8 F, p$ }' ]( i% c
" [. G/ ~% ~# J: m6 M9 b8 d0 GS1=2.22 B1=3.15 F1=3.01 / n! L+ s( \1 G3 `
' x* |# Z9 J( {1 u/ r
S2=2.10 B2=3.25 F2=3.00
* V" ]) V0 A7 B- u( `4 K4 A% ^# T/ X4 W2 j% ] s
" u, y8 l( v4 P x9 |+ rS3=2.20 B3=3.10 F3=2.87 8 e7 K; |8 z/ L" n& L" p
9 A' e& q. H7 B1 c9 S5 j B6 v0 E( F1 p {, [
S4=2.25 B14=3.10 F4=2.95 ! ~0 p7 C' v# @. v; y G+ \
2 b9 z. F# X, N- t( B3 I+ y8 w( d5 ` _0 H- N/ h7 V4 v
6 h, X* L( X5 y- Y1/r1=1/S1+1/B1+1/F1=1/2.22+1/3.15+1/3.01 => r1=0.91 ( s m) I' R) M$ u
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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% l5 w2 o o( }/ J
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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
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1/r4=1/S4+1/B4+1/F4=1/2.25+1/3.10+1/2.95 => r4=0.90
8 ]; m' F! x7 c; ~% C6 V' g( D# u: G+ x9 Y- y- K6 r+ @8 @% Y4 G2 l; O, x5 l5 f* K
S1'=1/(S1*r1)=1/(2.22*0.91)=41 : W# q# m$ g# T
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类似的计算后,于是: # s3 M- z! s6 q8 s- Z8 M j2 ^. ]6 Y+ n. n% h: L7 ]. y3 Z
* ^' b9 i+ `5 M3 Z$ R. @S1'=41 B1'=29 F1'=30;
/ s9 d2 G9 g1 J9 \0 J9 g. I+ @" V. E! ?
S2'=43 B2'=28 F2'=30 3 e- T: x' @% _% l" w5 s0 e2 J& K2 |$ v
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: T) s" M3 Q4 o) L, JS3'=40 B3'=29 F3'=31 2 S) d! d' N! n! V, p
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# g6 m G4 D9 V4 `3 E0 o) F1 US4'=40 B4'=29 F4'=31 , k* \& f6 h0 j, D. S9 O; K& e
: B6 y" Y' M2 }4 T/ O0 g4 ~9 R3 K" C* s1 C& O- G7 {
(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
" h% X4 X T1 C5 M8 q: m) a* R9 Y/ Q" p9 \
/ h* i. S: T# c, k& D; y" C好:S'=(S1'+S2'+S3'+S4')/4=(41+43+40+40)/4=41
# B5 K4 j* y' l- {# z( c; @) q( ], k9 L T& t
1 m& b H: b+ XB'=(B1'+B2'+B3'+B4')/4=(29+28+29+29)/4=28.75 " B1 h3 M. o% V! H' z
& B ~ P1 r7 LF'=(F1'+F2'+F3'+F4')/4=(30+30+31+31)/4=30.5 ; f# d5 c; `* _8 O
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于是: / s+ X- G$ g6 i& P E8 u9 j! |0 ? f$ e6 x3 b; w; v+ r& V' h
9 E ]' p: I. D7 h. {' {8 z8 t& Q9 Q9 ~2 V
G31=S1*S'=2.22*41=91.02 ! B$ E, |, X) y+ M1 T* T, x _2 Z. t
+ D$ n) P# X# M
! y4 D! H7 {6 B0 F4 KG11=B1*B'=3.15*28.75=90.56
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G01=F1*F'=3.01*30.5=91.8 2 b6 B# O% q. }" I: W0 ]9 q8 |" H9 ~% k) l& b
$ x* ? {; \5 \
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 \
/ T" U* f" c6 K8 {* }& I' u- h6 C* |* h W0 f7 S7 s3 A2 @. G$ i
) P6 Q/ e( s& |" c' Y9 f+ x9 Q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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