Testing local independence between two point processes
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Published on: October 24, 2012
1Institut National de la Recherche Agronomique, Unité de Biométrie, Domaine Saint-Paul, Avignon, France. allard@avignon.inra.fr
Abstract:
Dependencies between two types of points in a spatial point process can be due either to a real dependence between the two types or to the dependence on common underlying variables. We propose a global test for dependence between two point processes that is valid for a wide range of models. In contrast with previously proposed methods, it is based on a number of local test statistics, which makes it possible to map the local association between the two processes. The behavior of the test is evaluated by a simulation study. It is then applied to a vegetation pattern data set from Burkina Faso.
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