Mostra el registre d'ítem simple
Consensus for distributed EM-based clustering in WSNs
dc.contributor.author | Silva Pereira, Silvana |
dc.contributor.author | Barbarossa, Sergio |
dc.contributor.author | Pagès Zamora, Alba Maria |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2011-03-21T08:53:12Z |
dc.date.available | 2011-03-21T08:53:12Z |
dc.date.created | 2010 |
dc.date.issued | 2010 |
dc.identifier.citation | Silva, 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.uri | http://hdl.handle.net/2117/11975 |
dc.description.abstract | A 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.extent | 4 p. |
dc.language.iso | eng |
dc.publisher | IEEE Press. Institute of Electrical and Electronics Engineers |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament del senyal en les telecomunicacions |
dc.subject.lcsh | Underwater acoustic telemetry |
dc.subject.lcsh | MIMO radar |
dc.subject.lcsh | Radio networks |
dc.subject.lcsh | Signal processing |
dc.title | Consensus for distributed EM-based clustering in WSNs |
dc.type | Conference lecture |
dc.subject.lemac | Processament del senyal |
dc.contributor.group | Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://gps-tsc4.upc.es/documents/file_1512.pdf |
dc.rights.access | Open Access |
local.identifier.drac | 5335485 |
dc.description.version | Postprint (published version) |
local.citation.author | Silva, S.; Barbarossa, S.; Pages, A. |
local.citation.contributor | IEEE Sensor Array and Multichannel Signal Processing Workshop |
local.citation.pubplace | Jerusalem - Tel-Aviv |
local.citation.publicationName | 2010 IEEE Sensor Array and Multichannel Signal Processing Workshop |
local.citation.startingPage | 45 |
local.citation.endingPage | 48 |