- Bayesian Anal.
- Volume 12, Number 2 (2017), 435-463.
Bayesian Inference for Diffusion-Driven Mixed-Effects Models
Stochastic differential equations (SDEs) provide a natural framework for modelling intrinsic stochasticity inherent in many continuous-time physical processes. When such processes are observed in multiple individuals or experimental units, SDE driven mixed-effects models allow the quantification of both between and within individual variation. Performing Bayesian inference for such models using discrete-time data that may be incomplete and subject to measurement error is a challenging problem and is the focus of this paper. We extend a recently proposed MCMC scheme to include the SDE driven mixed-effects framework. Fundamental to our approach is the development of a novel construct that allows for efficient sampling of conditioned SDEs that may exhibit nonlinear dynamics between observation times. We apply the resulting scheme to synthetic data generated from a simple SDE model of orange tree growth, and real data on aphid numbers recorded under a variety of different treatment regimes. In addition, we provide a systematic comparison of our approach with an inference scheme based on a tractable approximation of the SDE, that is, the linear noise approximation.
Bayesian Anal., Volume 12, Number 2 (2017), 435-463.
First available in Project Euclid: 23 May 2016
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Whitaker, Gavin A.; Golightly, Andrew; Boys, Richard J.; Sherlock, Chris. Bayesian Inference for Diffusion-Driven Mixed-Effects Models. Bayesian Anal. 12 (2017), no. 2, 435--463. doi:10.1214/16-BA1009. https://projecteuclid.org/euclid.ba/1464035697
- Supplementary material for Bayesian inference for diffusion-driven mixed-effects models.