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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.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.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.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.rights.accessOpen Access
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.publicationName2010 IEEE Sensor Array and Multichannel Signal Processing Workshop

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