6533b83afe1ef96bd12a7b82
RESEARCH PRODUCT
Local inhomogeneous weighted summary statistics for marked point processes
Nicoletta D’angeloGiada AdelfioJorge MateuOttmar Croniesubject
FOS: Computer and information sciencesStatistics and ProbabilityEarthquakefunctional marked point proceStatistics - Computationmark correlation functionMethodology (stat.ME)Discrete Mathematics and Combinatoricsrandom labellingStatistics Probability and UncertaintySettore SECS-S/01 - Statisticamarked K-functionComputation (stat.CO)Statistics - Methodologylocal envelope testdescription
We introduce a family of local inhomogeneous mark-weighted summary statistics, of order two and higher, for general marked point processes. Depending on how the involved weight function is specified, these summary statistics capture different kinds of local dependence structures. We first derive some basic properties and show how these new statistical tools can be used to construct most existing summary statistics for (marked) point processes. We then propose a local test of random labelling. This procedure allows us to identify points, and consequently regions, where the random labelling assumption does not hold, e.g.~when the (functional) marks are spatially dependent. Through a simulation study we show that the test is able to detect local deviations from random labelling. We also provide an application to an earthquake point pattern with functional marks given by seismic waveforms.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2023-04-25 |