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dc.contributor.authorSilva Pereira, Silvana
dc.contributor.authorBarbarossa, Sergio
dc.contributor.authorPagès Zamora, Alba Maria
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned2011-03-21T08:53:12Z
dc.date.available2011-03-21T08:53:12Z
dc.date.created2010
dc.date.issued2010
dc.identifier.citationSilva, S.; Barbarossa, S.; Pages, A. Consensus for distributed EM-based clustering in WSNs. A: IEEE Sensor Array and Multichannel Signal Processing Workshop. "2010 IEEE Sensor Array and Multichannel Signal Processing Workshop". Jerusalem - Tel-Aviv: IEEE Press. Institute of Electrical and Electronics Engineers, 2010, p. 45-48.
dc.identifier.urihttp://hdl.handle.net/2117/11975
dc.description.abstractA distributed EM algorithm with consensus is proposed for density estimation and clustering using WSNs in the presence of mixtures of Gaussians. The EM algorithm is a general framework for maximum likelihood estimation in hidden variable models, usually implemented in a central node with global information of the network. The average consensus algorithm is a simple robust scheme for computing averages in a distributed manner. In this contribution, we run a distributed EM algorithm where the nodes obtain global knowledge of the statistics through consensus with local information exchange only in a WSN with instantaneous random links. Starting from a set of initial values, the nodes are able to compute the complete statistics of a mixture of Gaussians and classify into clusters according to the sensed density using a simple decision rule. A trade off between power consumption and final accuracy of the estimates is established through simulations.
dc.format.extent4 p.
dc.language.isoeng
dc.publisherIEEE Press. Institute of Electrical and Electronics Engineers
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament del senyal en les telecomunicacions
dc.subject.lcshUnderwater acoustic telemetry
dc.subject.lcshMIMO radar
dc.subject.lcshRadio networks
dc.subject.lcshSignal processing
dc.titleConsensus for distributed EM-based clustering in WSNs
dc.typeConference lecture
dc.subject.lemacProcessament del senyal
dc.contributor.groupUniversitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://gps-tsc4.upc.es/documents/file_1512.pdf
dc.rights.accessOpen Access
drac.iddocument5335485
dc.description.versionPostprint (published version)
upcommons.citation.authorSilva, S.; Barbarossa, S.; Pages, A.
upcommons.citation.contributorIEEE Sensor Array and Multichannel Signal Processing Workshop
upcommons.citation.pubplaceJerusalem - Tel-Aviv
upcommons.citation.publishedtrue
upcommons.citation.publicationName2010 IEEE Sensor Array and Multichannel Signal Processing Workshop
upcommons.citation.startingPage45
upcommons.citation.endingPage48


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