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一、我们先假设一个抽样数W={W(ij)|i,j∈N}, W(ij)就是比赛的进球结果,i,j分别表示主客队的进球数。) M3 b5 a' S( l2 }: P L# ], z
那么,平局、主胜、客胜就有以下表达式:
9 A: W8 A3 d: nA(d) = {W(ij)|i=j, i∈N, j∈N}
! e* u2 q2 u2 v, w5 z# y) sA(h) = {W(ij)|i>j, i∈N, j∈N}
* D( [) Z. E) b% |- a" kA(a) = {W(ij)|i 接着我们引入一个符号P(i)表示平胜负的概率,P(Ai)∈[0,1]: s$ m9 K ?+ \4 M# j# ^/ @1 Z
P(i)=P(Ai), i∈{0, 1, 2}
; e+ J) g( R/ w9 p$ Y二、首先来说说平手盘(即0:0Handicaps或我们经常在国外上看到的(Moneyline)
' D# l" B* M3 A" p7 a+ Z) m假设b(h)表示主队的投注总数,b(a)表示客队的投注总数,那么投注主客队的回报总数额为:
6 c. \( O7 k. C0 X0 m{b(h) , 即上面所述的A(d)结果发生
7 E, V. U0 z6 lR(1)={O(h)*b(h),即上面所述的A(h)结果发生6 T/ K( n& l6 a) b" o0 V; A' l
{0 , 即上面所述的A(a)结果发生' W7 w1 l6 Q; z% i, M$ h0 _/ k
以及: V- T9 ]' {5 g/ ~
{b(a) , 即上面所述的A(d)结果发生
' y. S2 i% f' J0 ~4 I9 G% fR(2)={0, 即上面所述的A(h)结果发生& o7 V% \* d( q( z. x- d
{O(a)*b(a),即上面所述的A(a)结果发生
7 S! M' _+ e9 `0 H& A+ p+ U如果O(h)表示平手盘下的主队赔率,O(a)表示平手盘下的客队赔率
# Y" y( h4 j2 p% C那么投注主客的期望回报总数分别为
# W0 _2 D- o- Q3 P% HE[R(1)]=P(d)*b(h)+P(h)*O(h)*b(h)=b(h)*[P(d)+p(h)O(h)]. J T+ c+ P7 ?* @* I# x
E[R(2)]=P(d)*b(a)+P(a)*O(a)*b(a)=b(a)*[P(d)+p(a)O(a)]
2 g6 L' u5 G' G; I按照真实赔率(暂不包含庄家优势),我们可以认为实际投注回报与期望投注回报相等' K/ l5 @- \* A2 n
E[R(1)]=b(h)*[P(d)+p(h)O(h)]=b(h)
& A7 F; f' J2 J9 H1 ^" _P(d)+p(h)O(h)=1
1 h2 e! v( X! [# v; _O(h)=(1-P(d))/P(h)-----这里就得出平手盘下计算主队赔率的公式
$ t0 x9 s' q3 l) m$ B9 e' P/ DE[R(2)]=b(a)*[P(d)+p(a)O(a)]=b(a)
4 [# n$ [% E) j" A3 @/ DP(d)+p(a)O(a)=1
) K+ S& Y' ^( O2 p d8 a# nO(a)=(1-P(d))/P(a)-----这里就得出平手盘下计算客队赔率的公式+ y* T6 z# ^6 x& m* t- ~
在极端情况下,可以认为平手盘亚洲赔率(或moneyline),就是在不发生平局结果条件下(就是公式中P(d)=0),主胜客胜概率的倒数3 I* r. ~. V) Z6 p. W2 x2 w
三、半球盘的计算描述
8 e5 V) ?" W7 ~" ?接着我们来看看主队(HOME TEAM)受半球(1/2:0 Handicaps的情况)
1 `! L, g: u8 P! F; T& T还是假设b(h)表示主队的投注总数,b(a)表示客队的投注总数,那么投注主客队的回报总数额为:
9 D/ \1 ~5 A9 R! u) T" ?1 q6 R2 x{O(h)*b(h),即上面所述的A(d)结果发生
; H; ]/ u! p& L1 g. T; w8 m$ zR(1)={O(h)*b(h),即上面所述的A(h)结果发生
, Y6 K* Y( C J7 x{0 , 即上面所述的A(a)结果发生, _, B& U, H9 a* l1 c
以及
S% E$ I7 J3 X1 y2 [{0 , 即上面所述的A(d)结果发生3 ^0 E! W& j4 x5 o: J6 Z7 C3 h
R(2)={0, 即上面所述的A(h)结果发生
2 M. K; W' x- X{O(a)*b(a),即上面所述的A(a)结果发生1 u, `5 |* b E) H
如果O(h)表示受半球盘下的主队赔率,O(a)表示客队赔率
/ a3 ^% T4 k4 ?5 U, h! d8 f投注主客的期望回报总数分别为5 q. J" Y( y7 a @& Z
E[R(1)]=P(d)*O(h)*b(h)+P(h)*O(h)*b(h)=b(h)*O(h)*[P(d)+p(h)]
8 y7 V/ O& l6 _( JE[R(2)]=P(a)*O(a)*b(a)+ l6 F. U- B8 ~$ Z2 v
假设实际投注回报与期望投注回报相等$ \! L5 M* v- @% i% a4 E' d
E[R(1)]=b(h)*O(h)*[P(d)+p(h)]=b(h)' `: G. M- y) Y. L3 o ~! Z
O(h)*[P(d)+p(h)]=1/ v0 K1 G* m- p# t
O(h)=1/[P(d)+p(h)]2 Z1 P H6 \) B8 X8 N7 J0 l
E[R(2)]=P(a)*O(a)*b(a)=b(a)% Y# C/ X/ e* [8 G0 I
P(a)*O(a)=1% n6 C* \4 }: R& h# R
O(a)=1/P(a)
- h0 v9 m; H. |& z( g. p1 ?同样道理可以计算让半球(0:1/2 Handicaps)的亚洲盘赔率
) i& ?5 I4 T$ ]& I5 |, P6 R4 zO(h)=1/p(h)
; ^! z q$ v! h0 J& ^" AO(a)=1/[P(d)+p(a)]
0 M% X# `& g+ p- [! V四、平半球盘的计算描述3 V; |8 |/ C" l V/ @: t
这个稍复杂一点% s/ X& H( C" ^ e7 o3 i
接着我们来看看主队(HOME TEAM)受平半球(1/4:0 Handicaps的情况)
: d {+ @" R# f6 R) T* B& k. A还是假设b(h)表示主队的投注总数,b(a)表示客队的投注总数,那么投注主客队的回报总数额计算:
5 D- l" R; t$ i- c3 t+ g% Y{[O(h)+1]/2×b(h), 即上面所述的A(d)结果发生
$ j( B/ }4 J4 | i; H# e/ RR(1)={O(h)*b(h), 即上面所述的A(h)结果发生9 C! E4 ?3 Q. }( D. g: m
{0, 即上面所述的A(a)结果发生/ ?' p2 y# }$ w0 z: g) M" P! }
以及8 R/ l Q8 m4 J' h1 U9 u
{1/2×b(a) , 即上面所述的A(d)结果发生4 }. }$ A3 r! K- ~
R(2)={0, 即上面所述的A(h)结果发生, ]& |( Y! |$ X1 u+ E
{O(a)*b(a), 即上面所述的A(a)结果发生
/ m8 A8 H: c) B投注主客的期望回报总数分别为& A u, i1 y9 O# r+ s& D$ w0 l
E[R(1)]=P(d)×{[O(h)+1]/2}×b(h)+P(h)×O(h)×b(h)=b(h)*(P(d)×{[O(h)+1]/2}+P(h)×O(h))
* J. @* D( q5 P2 p8 I4 V- S0 rE[R(2)]=1/2×b(a)×P(d)+P(a)*O(a)*b(a)=b(a)*[1/2×P(d)+P(a)*O(a)]* e, K& z( v3 e, l, @
和上面计算过程相似,得出:; B1 L i r* c
E[R(1)]=b(h)*(P(d)×{[O(h)+1]/2}+P(h)×O(h))=b(h). s9 {( a; ?6 M! R5 _
P(d)×{[O(h)+1]/2}+P(h)×O(h)=1; y" D; D7 A* D: t
O(h)*[1/2*P(d)+P(h)]+1/2*P(d)=11 r2 k% ]+ X0 J a5 K0 |% ~
O(h)=[1-1/2*P(d)]/[1/2*P(d)+P(h)]=(1-P(d)/2)/(P(d)/2+P(h))
- {1 p5 m8 U& A6 K" s- c2 i2 [8 iE[R(2)]=b(a)*[1/2×P(d)+P(a)*O(a)]=b(a)- M4 t" T! i( v
1/2×P(d)+P(a)*O(a)=1. Y5 o ]. Z3 d9 v. X# i
O(a)=[1-1/2×P(d)]/P(a)=(1-P(d)/2)/P(a)1 \8 i+ L& I% J, z: d/ q( O4 A
同样主队让平半就分别是
8 A9 O, X: w' `) `/ s0 EO(h)=(1-P(d)/2)/P(h)& r: h O7 S Z. D, j& ?
O(a)=(1-P(d)/2)/(P(d)/2+P(a))
6 ]3 x/ a- w! i; |' X6 y& O五、一球、两球等整数盘(这里先暂时说主队让1球的情况,0:1,Handicaps,其它可以类推的) r+ d& p Z# K+ @$ X, i: j
可以采用类似公式,在(一)中我们分别用A(d)、A(h)、A(a)描述平局、主胜、客胜事件的发生。现在改用另外的符号代替,如B(d)、B(h)、B(a),同时除了平、胜、负概率P(i)(i=d,h,a)外,还需要引入一个一个概率值P(hX)来代表主队赢一球(X=1)、二球(X=2)...的概率,下面来进行演算. Z4 s' j9 j( w! |5 Z) d+ L
B(d) = {W(ij)|i=j+k, i∈N, j∈N,k∈N}
6 z# q8 p3 h: R# h: I$ mB(h) = {W(ij)|i>j+k, i∈N, j∈N,k∈N}1 k5 }' l3 G: X2 y
B(a) = {W(ij)|i i,j分别表示主客队的进球数,k代表让球数$ {- z3 O# x$ R3 E) [) R. E
接着,假设b(h)表示主队的投注总数,b(a)表示客队的投注总数,那么投注主客队的回报总数额为:4 E0 ]' z) e; u! u6 @( f# j8 a3 l
{b(h)*O(h) , 即上面所述的B(d)结果发生
& ]8 q/ \ |& I! |2 y( ?$ I8 MR(1)={b(h)-O(h)*b(h),即上面所述的B(h)结果发生, z {& z) A/ V0 I' n
{0 , 即上面所述的B(a)结果发生4 q$ R1 d9 w8 j# Z
以及( {" A+ P- J8 b! V. C
{b(a) , 即上面所述的B(d)结果发生( i0 D0 b0 w1 N1 L4 h0 q z
R(2)={0, 即上面所述的B(h)结果发生! T. n0 T* q0 d) L
{O(a)*b(a),即上面所述的B(a)结果发生
; p r* f' Y. P# f1 J. w8 O投注主客的期望回报总数分别为
/ B, U3 \( P' e' sE[R(1)]=P(h)*b(h)*O(h)+P(h1)*(b(h)-O(h)*b(h))=b(h)*[P(h)*O(h)+P(h1)-P(h1)*O(h)]2 a" D, k/ O- A# P! s0 V6 d; k2 w
E[R(2)]=P(h1)*b(a)+(1-P(h))*O(a)*b(a)=b(a)*(P(h1)+O(a)-P(h)*O(a))
3 L) ?8 |7 o' { v假设实际投注回报与期望投注回报相等
* D2 c4 @3 x3 Y0 _% C* E2 RE[R(1)]=b(h)*[P(h)*O(h)+P(h1)-P(h1)*O(h)]=b(h)
0 p8 g5 W7 j, h% VP(h)*O(h)+P(h1)-P(h1)*O(h)=1
4 M3 Y) G" Z4 b. WO(h)*(P(h)-P(h1))=1-P(h1)8 h! K) @! o" V" `1 z8 F
O(h)=(1-P(h1))/(P(h)-P(h1))
5 _+ n+ T6 v* C0 L4 OE[R(2)]=b(a)*(P(h1)+O(a)-P(h)*O(a))=b(a)
3 U8 _4 _) g, x7 G! EP(h1)+O(a)-P(h)*O(a)=1
+ g5 g& b2 P M" ~- N8 vO(a)*(1-P(h))=1-P(h1)1 U+ p" K4 i: c( K7 i% G C; K
O(a)=(1-P(h1))/(1-P(h))
( q5 Y& {; Q" g. Z% y* `% I8 C以上(五)部分是让一球的情况,让两球以上整数盘和反过来受让整数盘是可以同样演算的。
+ Q3 O2 ^. P8 {6 G" \" V* l简单小结一球或整数盘,其实理论的演算过程不难,但是如何准确计算赢整数球的概率(P(hi)就是其中的难点,这已经涉及到如何用相对动态实力差或球差来计算各种赢球概率(是指赢1、2、3...球的概率,也可以说是赢球比分概率)的问题,使用自己数据模型里的数据来计算。 |
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