KLD-Sampling: Adaptive Particle Filters

TitleKLD-Sampling: Adaptive Particle Filters
Publication TypeConference Paper
Year of Publication2001
AuthorsFox D
EditorDietterich TG, Becker S, Ghahramani Z
Conference NameNIPS
PublisherMIT Press
Conference LocationCambridge, MA
Abstract<p>Over the last years, particle filters have been applied with great success to a variety of state estimation problems. We present a statistical approach to increasing the efficiency of particle filters by adapting the size of sample sets on-the-fly. The key idea of the KLD-sampling method is to bound the approximation error introduced by the sample-based representation of the particle filter. The name KLD-sampling is due to the fact that we measure the approximation error by the Kullback-Leibler distance. Our adaptation approach chooses a small number of samples if the density is focused on a small part of the state space, and it chooses a large number of samples if the state uncertainty is high. Both the implementation and computation overhead of this approach are small. Extensive experiments using mobile robot localization as a test application show that our approach yields drastic improvements over particle filters with fixed sample set sizes and over a previously introduced adaptation technique.</p>
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Citation KeyFox01KLD
Last changed Wed, 2012-03-07 15:08