Problem doboru macierzy wag przestrzennych w identyfikacji efektów przestrzennych samodzielności finansowej gmin
Problem of spatial weights matrix selection in the identification of spatial effects in evaluation of communes financial self-sufficiency

Summary/Abstract: The article aims to study how different choices affected resulting spatial effects in the evaluation of financial self-sufficiency of Wielkopolska voivodeship communes in 2014. Two methods of defining the matrix were considered: the first was based on a neighborhood criterion (including common boundary, k-nearest neighbors, and all communes within a d radius) and the second took a weight element of the matrix to be a reciprocal power function of the distance between corresponding communes. In all cases the distance between communes was proxied by the distance between their centers. The results showed that between all analyzed choices the one that maximized the global Moran I statistic was based on common boundary. It confirmed a long standing view that in studying spatial effects of economic and financial phenomena simpler and easier to interpret weight matrices are usually the right ones. It certainly does seem true of financial characteristics with more local variability.

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