, a 0*, a 1*,..., an * a 0, a 1,..., an 1*, 2*,..., T *, e 1, e 2,..., eT iid -.
, ( 1)× ( 2)×...× () et, t =1, 2,..., T, . , 1, 2,..., T ( 1)× ( 2)×...× ( ) , a 0, a 1,..., an.
, :
t ´( +1).
y = = , (2.110)
a 0*, a 1*,..., an * s e 2, , . ,
et eti
a 0*, a 1*,..., an * s e 2 +2 :
- :
= × a + e, (2.113)
:
e = × a, (2.114)
(2.111) .
( × a)¢×( × a). (2.115)
(2.115) a se 2, - (2.112):
l / a = ( ¢ × + ¢ × × a)=0;
l / se 2= ( × a)¢×( × a)=0. (2.116)
se 2¹0, (2.116) :
a *= a =( ¢ )1× ¢× , (2.117)
:
s 2 = ( × a)¢×( × a)=