Estimating Second-Order Characteristics of Inhomogeneous Spatio-Temporal Point Processes |
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Authors: | Edith Gabriel |
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Affiliation: | 1. Avignon University, LMA EA 2151, 84000, Avignon, France
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Abstract: | Non-parametric estimates of the K-function and the pair correlation function play a fundamental role for exploratory and explanatory analysis of spatial and spatio-temporal point patterns. These estimates usually require information from outside of the study region, resulting to the so-called edge effects which have to be corrected. They also depend on first-order characteristics, which have to be estimated in practice. In this paper, we extend classical edge correction methods to the spatio-temporal setting and compare the performance of the related estimators for stationary/non-stationary and/or isotropic/anisotropic point patterns. Further, we explore the influence of the estimated intensity function on these estimators. |
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