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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。- m" u/ l1 p8 Z' `; o/ f, h
那么,平局、主胜、客胜就有以下表达式:
' ]0 c* e* i. b4 y4 qA(d) = {W(ij)|i=j, i∈N, j∈N}
& V" i; y7 y6 Q. A1 bA(h) = {W(ij)|i>j, i∈N, j∈N}
$ J0 g) y8 ^' `3 [' T# s9 V4 _7 eA(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]:
" g g6 ~3 w+ g; i% Z+ m& zP(i)=P(Ai), i∈{0, 1, 2}1 m% d# Y% t/ {( \) D- m2 J
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)
0 l# H- N2 F; d b* Y: T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:
0 P" ~ H: ], X/ d{b(h) , 即上面所述的A(d)结果发生
+ H! j d& R! \$ ^- `2 `& WR(1)={O(h)*b(h),即上面所述的A(h)结果发生- f! {$ q6 ^3 m& J
{0 , 即上面所述的A(a)结果发生
% @4 D# i/ m7 p: Y# o以及/ q9 n8 B5 F) ~
{b(a) , 即上面所述的A(d)结果发生( b$ l# y, q3 O9 ^; p, B; i' v8 P
R(2)={0, 即上面所述的A(h)结果发生 Y' c% h* m1 n6 w
{O(a)*b(a),即上面所述的A(a)结果发生
& U2 p/ b7 G+ N5 x0 j6 L* k: O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* B9 ^. |! `* S那么投注主客的期望回报总数分别为5 ~4 [, U- C. @2 G2 _* W1 q! V7 E
E[R(1)]=P(d)*b(h)+P(h)*O(h)*b(h)=b(h)*[P(d)+p(h)O(h)]
0 b. c% l* N- D6 c% BE[R(2)]=P(d)*b(a)+P(a)*O(a)*b(a)=b(a)*[P(d)+p(a)O(a)]9 n# x. ~, M s, p
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
, i3 j5 j6 N' ~; S: X) aE[R(1)]=b(h)*[P(d)+p(h)O(h)]=b(h)
! U. a- b8 \& O d% @) @P(d)+p(h)O(h)=1. t R! _: D6 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
9 g4 Z( ` r/ O$ J) ^4 K7 n) T4 n& lE[R(2)]=b(a)*[P(d)+p(a)O(a)]=b(a)
0 D$ d8 J. U3 e* Z# o" ]P(d)+p(a)O(a)=14 D6 v- V4 ]" J- E
O(a)=(1-P(d))/P(a)-----这里就得出平手盘下计算客队赔率的公式
5 I5 P. m0 f( s. x4 F2 D g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2 [) l+ X/ ~, g, R" v
三、半球盘的计算描述- X: k4 L. x& J$ A+ w
接着我们来看看主队(HOME TEAM)受半球(1/2:0 Handicaps的情况)
- P7 n# W$ I/ m4 |* _! W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:8 t) e# Q! p1 u/ r7 ~$ ?
{O(h)*b(h),即上面所述的A(d)结果发生 G# z# d5 D( C6 d. x$ o
R(1)={O(h)*b(h),即上面所述的A(h)结果发生
0 n/ I7 Y3 s4 j3 ^{0 , 即上面所述的A(a)结果发生
e6 d; e% q+ Z2 ?以及/ D+ x1 b- A( U( V. V. L7 p+ d0 v
{0 , 即上面所述的A(d)结果发生
6 @) ~5 \; ~+ f6 y- CR(2)={0, 即上面所述的A(h)结果发生* W) Q l$ Q+ \4 i" L
{O(a)*b(a),即上面所述的A(a)结果发生; r- T! n5 H5 j) q1 D
如果O(h)表示受半球盘下的主队赔率,O(a)表示客队赔率0 j# c6 Y0 P# G% x: k# v
投注主客的期望回报总数分别为
5 C8 Y7 ~1 e2 @# N5 ]* g& hE[R(1)]=P(d)*O(h)*b(h)+P(h)*O(h)*b(h)=b(h)*O(h)*[P(d)+p(h)]' c- M4 o% ?- z! w' T; O, j, ~7 H
E[R(2)]=P(a)*O(a)*b(a)
! Z+ ?& y9 p6 I+ h4 @; u( c! b假设实际投注回报与期望投注回报相等
4 {) B$ q, }7 H. a1 TE[R(1)]=b(h)*O(h)*[P(d)+p(h)]=b(h)( B: C7 d- G' F; H5 j6 K2 z+ K8 s e
O(h)*[P(d)+p(h)]=1
" y; B- E7 |/ ?( A9 GO(h)=1/[P(d)+p(h)]
* B0 S m+ S Q1 J$ ^E[R(2)]=P(a)*O(a)*b(a)=b(a)+ P8 M" L2 x5 B* i) b! c: |
P(a)*O(a)=1
; \, U6 V' b. V( j1 l9 \O(a)=1/P(a)% M' e/ ?# {0 C# E
同样道理可以计算让半球(0:1/2 Handicaps)的亚洲盘赔率
; y2 t* t% q. J" f& G5 _O(h)=1/p(h)
) p, Q' p" }+ l1 Z& a& r, {: }O(a)=1/[P(d)+p(a)]4 e$ n5 f5 j' ?
四、平半球盘的计算描述
- ^; x0 b, o% p8 A6 p3 x H1 L这个稍复杂一点8 j& F- ?4 n2 S; s" f
接着我们来看看主队(HOME TEAM)受平半球(1/4:0 Handicaps的情况)
7 \. H; E/ B+ J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:" z* o U4 M) s! k# ?; C
{[O(h)+1]/2×b(h), 即上面所述的A(d)结果发生/ I4 A' ^! j% J( [- c2 O
R(1)={O(h)*b(h), 即上面所述的A(h)结果发生; N5 T, C A2 ?$ ]: V. N
{0, 即上面所述的A(a)结果发生
; D- n T% I! F9 ]7 A8 t) j以及9 {4 T8 F; ^9 Y4 @7 D
{1/2×b(a) , 即上面所述的A(d)结果发生
2 r7 V; T) O) f: ^* x( f2 G% XR(2)={0, 即上面所述的A(h)结果发生
% U$ T9 i" R& A{O(a)*b(a), 即上面所述的A(a)结果发生% i9 o, X$ F( c: q& e- @
投注主客的期望回报总数分别为
`0 L" r: e0 ~; fE[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)) E1 O! M/ H( z) \, x
E[R(2)]=1/2×b(a)×P(d)+P(a)*O(a)*b(a)=b(a)*[1/2×P(d)+P(a)*O(a)]7 w) x0 O [4 m( ]
和上面计算过程相似,得出:- {+ I4 d" _4 g( J% z! N9 `! W. {
E[R(1)]=b(h)*(P(d)×{[O(h)+1]/2}+P(h)×O(h))=b(h)
5 e! \1 T. N8 L! fP(d)×{[O(h)+1]/2}+P(h)×O(h)=1. D, y/ b: L1 K3 v% `9 s
O(h)*[1/2*P(d)+P(h)]+1/2*P(d)=1 I( l! |8 D/ G$ }1 M
O(h)=[1-1/2*P(d)]/[1/2*P(d)+P(h)]=(1-P(d)/2)/(P(d)/2+P(h))% |! X7 X7 }9 ^) [% y
E[R(2)]=b(a)*[1/2×P(d)+P(a)*O(a)]=b(a) b; h. u+ w0 n
1/2×P(d)+P(a)*O(a)=1
( M0 B- S2 [; k) r" d+ Q6 yO(a)=[1-1/2×P(d)]/P(a)=(1-P(d)/2)/P(a)
) `# R- n( Z$ L3 D- V同样主队让平半就分别是
# u1 O9 b" n1 n$ n |7 A VO(h)=(1-P(d)/2)/P(h)/ Y7 P7 |( y. n9 ?4 G" R( r) u) [7 q# n
O(a)=(1-P(d)/2)/(P(d)/2+P(a))& Z( u# _$ P5 m% w
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)) ~# u9 G, |8 z* u
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0 f/ j/ |) x1 R
B(d) = {W(ij)|i=j+k, i∈N, j∈N,k∈N}
) W& q% o) B- rB(h) = {W(ij)|i>j+k, i∈N, j∈N,k∈N}
4 _) n' ]: U# ~9 G" @B(a) = {W(ij)|i i,j分别表示主客队的进球数,k代表让球数- j7 P, v5 `7 C0 K
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:+ E/ c1 ^" Z8 V$ U
{b(h)*O(h) , 即上面所述的B(d)结果发生
9 h' W9 U' e: h% GR(1)={b(h)-O(h)*b(h),即上面所述的B(h)结果发生" \) a K) ` C/ D' P- B
{0 , 即上面所述的B(a)结果发生
; Q. N$ {& i: _+ ?" W7 B以及* J( U/ C3 v' D6 _
{b(a) , 即上面所述的B(d)结果发生
* G L4 r$ J) K& ^% l8 ]R(2)={0, 即上面所述的B(h)结果发生
/ n) Y8 x2 c, Z{O(a)*b(a),即上面所述的B(a)结果发生3 j, j' u! U* D; b
投注主客的期望回报总数分别为
( e0 i3 e7 w9 I8 A6 S8 f0 g7 |E[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)]: I, y2 j% Y& L% H6 B' X
E[R(2)]=P(h1)*b(a)+(1-P(h))*O(a)*b(a)=b(a)*(P(h1)+O(a)-P(h)*O(a))
7 }, ? E. ]: z: L3 q假设实际投注回报与期望投注回报相等
8 W D! W) z2 a5 C7 D3 KE[R(1)]=b(h)*[P(h)*O(h)+P(h1)-P(h1)*O(h)]=b(h)
- i* |- F' _& xP(h)*O(h)+P(h1)-P(h1)*O(h)=1/ f/ V* p1 u" v; P
O(h)*(P(h)-P(h1))=1-P(h1)
) _. Q- S% @) f# z8 t0 n; WO(h)=(1-P(h1))/(P(h)-P(h1))
# }; {" l ]% t ZE[R(2)]=b(a)*(P(h1)+O(a)-P(h)*O(a))=b(a)
' Q/ D0 V5 A V. q/ ?P(h1)+O(a)-P(h)*O(a)=1
; d. x* Q; J. s6 V* P. L* j9 EO(a)*(1-P(h))=1-P(h1)2 w' @7 I( N2 W3 f. P) m$ \+ y
O(a)=(1-P(h1))/(1-P(h))- G L5 u5 k) L. W4 f( U! F5 Z
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。
4 y w" J: W! s9 q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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