Message-ID: <alpine.LRH.2.00.0811221337310.7189@reclus.nhh.no>
Date: 2008-11-22T12:42:39Z
From: Roger Bivand
Subject: posting on behalf of Kevin, Yen
I'm posting this on behalf Kevin, Yen - the same text was trapped
yesterday as spam, so this is also a technical issue, and the reason for
helping in this way:
-----------------------
Hi, lists,
I am reading meterials about GWR, but there are some problems puzzling me
very much:
If there are N observations at N locations g(g1,????gn),the dependent and
independent variables are Y(y1,...yn) and X(x1,...xn). The formula for the
regression is Y=X*Beta, where Beta is the function of location g.
My questions are as follows:
1.How many groups should be grouped for regressing? N groups for the N
locations or M groups (M is a arbitrary number less than N)?
2.When the parameter beta(gi) at location gi is estimated, weight Wi is
used. So how is W used? Are the neighboring k(with in the bandwidth h)
observations used for calculation?
3.Beta is the function of location. Is Beta same as W or expressed as a
function including W like Beta=W*f(g)?
Many thanks and best wishes
Kevin,Yen
LIESMARS,Wuhan University,China
--
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no