Rao-Blackwellised Particle Filtering via Data Augmentation

Arnaud Doucet EE Engineering University of Melbourne Parkville, Victoria 3052 Australia [email protected] In this paper, we extend the Rao-Blackwellised particle filtering method to more complex hybrid models consisting of Gaussian latent variables and discrete observations. This is accomplished by augmenting the models with artificial variables that enable us to apply Rao-Blackwellisation. Other improvements include the design of an optimal importance proposal distribution and being able to swap the sampling an selection steps to handle outliers. We focus on sequential binary classifiers that consist of linear combinations of basis functions , whose coefficients evolve according to a Gaussian smoothness prior. Our results show significant improvements.