Particle filters with independent resampling
In many signal processing applications we aim to track a state of interest given available observations. Among existing techniques, sequential Monte Carlo filters are importance sampling-based algorithms meant to propagate in time a set of weighted particles which represent the a posteriori density...
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Published in | 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) pp. 3994 - 3998 |
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Main Authors | , , , |
Format | Conference Proceeding Journal Article |
Language | English |
Published |
IEEE
01.03.2016
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Abstract | In many signal processing applications we aim to track a state of interest given available observations. Among existing techniques, sequential Monte Carlo filters are importance sampling-based algorithms meant to propagate in time a set of weighted particles which represent the a posteriori density of interest. As is well known weights tend to degenerate over time, and resampling is a commonly used rescue for discarding particles with low weight. Unfortunately conditionally independent resampling produces a set of dependent samples and the technique suffers from sample impoverishment. In this paper we modify the resampling step of particle filtering techniques in order to produce independent samples per iteration. We validate our technique via simulations. |
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AbstractList | In many signal processing applications we aim to track a state of interest given available observations. Among existing techniques, sequential Monte Carlo filters are importance sampling-based algorithms meant to propagate in time a set of weighted particles which represent the a posteriori density of interest. As is well known weights tend to degenerate over time, and resampling is a commonly used rescue for discarding particles with low weight. Unfortunately conditionally independent resampling produces a set of dependent samples and the technique suffers from sample impoverishment. In this paper we modify the resampling step of particle filtering techniques in order to produce independent samples per iteration. We validate our technique via simulations. |
Author | Septier, Francois Petetin, Yohan Desbouvries, Francois Lamberti, Roland |
Author_xml | – sequence: 1 givenname: Roland surname: Lamberti fullname: Lamberti, Roland organization: Telecom Sudparis, Univ. Paris-Saclay, Evry, France – sequence: 2 givenname: Yohan surname: Petetin fullname: Petetin, Yohan organization: Telecom Sudparis, Univ. Paris-Saclay, Evry, France – sequence: 3 givenname: Francois surname: Septier fullname: Septier, Francois organization: Inst. Mines-Telecom, Telecom Lille, Villeneuve-d'Ascq, France – sequence: 4 givenname: Francois surname: Desbouvries fullname: Desbouvries, Francois organization: Telecom Sudparis, Univ. Paris-Saclay, Evry, France |
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SubjectTerms | Approximation algorithms Atmospheric measurements Conferences Electronics Filtering Filtration Hidden Markov models Indexes Monte Carlo methods Particle filters Particle measurements Resampling resampling procedures Sequential Monte Carlo Signal processing Speech Tracking |
Title | Particle filters with independent resampling |
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