Regularization techniques for inhomogeneous (spatial) point processes intensity and conditional intensity estimation

05/22/2023

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by   Jean-François Coeurjolly, et al.

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Point processes are stochastic models generating interacting points or events in time, space, etc. Among characteristics of these models, first-order intensity and conditional intensity functions are often considered. We focus on inhomogeneous parametric forms of these functions assumed to depend on a certain number of spatial covariates. When this number of covariates is large, we are faced with a high-dimensional problem. This paper provides an overview of these questions and existing solutions based on regularizations.