Efficient Learning of the Parameters of Non-Linear Models Using Differentiable Resampling in Particle FiltersShow others and affiliations
2022 (English)In: IEEE Transactions on Signal Processing, ISSN 1053-587X, E-ISSN 1941-0476, Vol. 70, p. 3676-3692Article in journal (Refereed) Published
Abstract [en]
It has been widelydocumented that the sampling and resampling steps in particle filters cannot be differentiated. The reparameterisation trick was introduced to allow the sampling step to be reformulated into a differentiable function. We extend the reparameterisation trick to include the stochastic input to resampling therefore limiting the discontinuities in the gradient calculation after this step. Knowing the gradients of the prior and likelihood allows us to run particle Markov Chain Monte Carlo (p-MCMC) and use the No-U-Turn Sampler (NUTS) as the proposal when estimating parameters. We compare the Metropolis-adjusted Langevin algorithm (MALA), Hamiltonian Monte Carlo with different number of steps and NUTS. We consider three state-space models and show that NUTS improves the mixing of the Markov chain and can produce more accurate results in less computational time.
Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) Institute of Electrical and Electronics Engineers (IEEE), 2022. Vol. 70, p. 3676-3692
Keywords [en]
Bayesian analysis, No-U-Turn Sampler, particle-MCMC, reparameterisation trick, state-space models
National Category
Signal Processing Probability Theory and Statistics
Identifiers
URN: urn:nbn:se:uu:diva-482389DOI: 10.1109/TSP.2022.3187868ISI: 000829173000013OAI: oai:DiVA.org:uu-482389DiVA, id: diva2:1689213
Funder
Swedish Research Council2022-08-222022-08-222024-12-03Bibliographically approved