We study the effects of aggregation on four different cases of nonlinear spatial gravity models. We present some theoretical results on the relationship between the mean flows at an aggregated level and the mean flow at the disaggregated level. We then focus on the case of perfect aggregation...

Non-Metric Partial Least Squares Path Modeling is a recent methodology based on the concept of Optimal Scaling applied to PLS Path Modeling algorithms. We adopted Non-Metric PLS Path Modeling to analyse a large administrative dataset containing nominal and ordinal variables using a specialized R...