Home > Publications . Search All . Browse All . Country . Browse PSC Pubs . PSC Report Series

PSC In The News

RSS Feed icon

Ela and Budnick find higher unintended pregnancy risk among non-heterosexual women

Trends in frequent adolescent binge drinking, 1991-2015

Detroit Mayor challenges U-M to analyze root causes, patterns of murders in city

More News

Highlights

Bailey, Eisenberg , and Fomby promoted at PSC

Former PSC trainee Eric Chyn wins PAA's Dorothy S. Thomas Award for best paper

Celebrating departing PSC trainees

Bloome finds children raised outside stable 2-parent families more likely to become low-income adults, regardless of parents' income

More Highlights

A new spatial-attribute weighting function for geographically weighted regression

Publication Abstract

Shi, H.J., L.J. Zhang, and Jianguo Liu. 2006. "A new spatial-attribute weighting function for geographically weighted regression." Canadian Journal of Forest Research, 36(4): 996-1005.

In recent years, geographically weighted regression (GWR) has become popular for modeling spatial heterogeneity in a regression context. However, the current weighting function used in GWR only considers the geographical distances of trees in a stand, while the attributes (e.g., tree diameter) of the neighboring trees are totally ignored. In this study, we proposed a new weighting function that combines the "geographical space" and "attribute space" between the subject tree and its neighbors, such that (1) neighbors with greater geographical distances from the subject tree are assigned smaller weights, and (2) at a given geographical distance, neighboring trees with sizes that are similar to that of the subject tree are assigned larger weights. The results indicate that the GWR model with the new spatialattribute weighting function performs better than the one with the spatial weighting function in terms of model residuals and predictions for different spatial patterns of tree locations.

Browse | Search : All Pubs | Next