Implement closed form MGWR fit function #82
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Adding a new function
exact_fit(self)to theMGWRclass.This provides a closed-form solution to MGWR estimates and inference. The backfitting in MGWR.fit() will converge to this solution. See this for validation.
Note: this would be slightly faster and accurate than MGWR.fit(). But this would require large memory when n > 5,000.
See Li and Fotheringham, 2020, IJGIS, pg.4.