Variational Bayes approach for classification of points in superpositions of point processes
Journal article, 2016
We investigate the problem of classifying superpositions of spatial point processes. In particular, we are interested in realizations formed as a superposition of a regular point process and a Poisson point process. The aim is to decide which of the two processes each point belongs to. Recently, a Markov chain Monte Carlo (MCMC) approach was suggested by Redenbach et al. (2015), which however, is computationally heavy. In this paper, we will introduce a method based on variational Bayes approximation and compare its performance to the performance of a slightly refined version of the MCMC approach.
Superposition
Noise detection
Markov chain Monte Carlo
Bayesian inference
Spatial point process
Author
Tuomas Rajala
University of Gothenburg
Chalmers, Mathematical Sciences, Mathematical Statistics
Claudia Redenbach
Technische Universitat Kaiserslautern
Aila Särkkä
University of Gothenburg
Chalmers, Mathematical Sciences, Mathematical Statistics
Aila Särkkä
Fraunhofer-Institut fur Techno- und Wirtschaftsmathematk
Technische Universitat Kaiserslautern
Spatial Statistics
2211-6753 (ISSN)
Vol. 15 85-99Subject Categories (SSIF 2011)
Mathematics
Geology
DOI
10.1016/j.spasta.2015.12.001