Testing independence between two nonhomogeneous point processes in time. (English) Zbl 07480229
Summary: Point processes are often used to model the occurrence times of different phenomena, such as heatwaves or spike trains. Many of those problems require to study the independence between nonhommogeneous point processes in time, and this work develops three families of tests to assess that hypothesis. They can be applied to different types of processes, and all together they cover a wide range of situations appearing in real problems. The first family includes two tests for Poisson processes. The second family is based on the close point distance, and the third one on cross dependence functions. An extensive simulation study of the size and power of the tests is carried out and some practical rules to select the most appropriate test in different cases, are provided. The proposed tests are demonstrated on a real data application about the occurrence of extreme heat events in three Spanish locations.
MSC:
| 60Gxx | Stochastic processes |
| 60Hxx | Stochastic analysis |
| 62Mxx | Inference from stochastic processes |
| 62Pxx | Applications of statistics |
| 62-XX | Statistics |
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