Bayesian Analysis

Bayesian Inference for Partially Observed Multiplicative Intensity Processes

Sophie Donnet and Judith Rousseau

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Poisson processes are used in various applications. In their homogeneous version, the intensity process is a deterministic constant whereas it depends on time in their inhomogeneous version. To allow for an endogenous evolution of the intensity process, we consider multiplicative intensity processes. Inference methods for such processes have been developed when the trajectories are fully observed, that is to say, when both the sizes of the jumps and the jumps instants are observed. In this paper, we deal with the case of a partially observed process: we assume that the jumps sizes are non- or partially observed whereas the time events are fully observed. Moreover, we consider the case where the initial state of the process at time 0 is unknown. The inference being strongly influenced by this quantity, we propose a sensible prior distribution on the initial state, using the probabilistic properties of the process. We illustrate the performances of our methodology on a large simulation study.

Article information

Bayesian Anal. Volume 11, Number 1 (2016), 151-190.

First available in Project Euclid: 4 March 2015

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Digital Object Identifier

Mathematical Reviews number (MathSciNet)

Primary: 62F15: Bayesian inference 62M09: Non-Markovian processes: estimation 62P30: Applications in engineering and industry
Secondary: 62N01: Censored data models

Bayesian analysis counting process latent variables multiplicative intensity process


Donnet, Sophie; Rousseau, Judith. Bayesian Inference for Partially Observed Multiplicative Intensity Processes. Bayesian Anal. 11 (2016), no. 1, 151--190. doi:10.1214/15-BA940.

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