Fits a geographically weighted regression model with different scales
for each covariate. Uses the negative binomial distribution as default,
but also accepts the normal, Poisson, or logistic distributions.
Can fit the global versions of each regression and also the geographically
weighted alternatives with only one scale, since they are all particular
cases of the multiscale approach.
Hanchen Yu (2024). "Exploring Multiscale Geographically Weighted Negative Binomial Regression", Annals of the American Association of Geographers