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