Beach, Robert H.; Kuchler, Frederick R.; Leibtag, Ephraim; … - 2008
, X
τ
is the weekly count of newspaper
articles in period τ
with τ ≤ t, b is a collection of other explanatory … written due to the infi nite lag distribution for X. To derive
an estimable form of equation (1), Mitchell and Speaker (1986 …) propose the
following transformation:
(2)
where
�
1
0
,,...,2,
)1(
t
i
j
it
tj
nj
i
X
Z ,
)1(
2 …