SCATTERING STATISTICS OF GENERALIZED SPATIAL POISSON POINT PROCESSES

Proc IEEE Int Conf Acoust Speech Signal Process. 2022 May:2022:5528-5532. doi: 10.1109/icassp43922.2022.9746382. Epub 2022 Apr 27.

Abstract

We present a machine learning model for the analysis of randomly generated discrete signals, modeled as the points of an inhomogeneous, compound Poisson point process. Like the wavelet scattering transform introduced by Mallat, our construction is naturally invariant to translations and reflections, but it decouples the roles of scale and frequency, replacing wavelets with Gabor-type measurements. We show that, with suitable nonlinearities, our measurements distinguish Poisson point processes from common self-similar processes, and separate different types of Poisson point processes.

Keywords: Poisson point process; Scattering transform; convolutional neural network.