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Some results on Gaussian mixtures

2014-10-06Comunicação em conferência Acesso restrito
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datacite.subject.fosCiências Naturais::Ciências da Computação e da Informação
datacite.subject.sdg08:Trabalho Digno e Crescimento Económico
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
datacite.subject.sdg10:Reduzir as Desigualdades
dc.contributor.authorFelgueiras, Miguel
dc.contributor.authorSantos, Rui
dc.contributor.authorMartins, João Paulo
dc.date.accessioned2026-07-21T13:32:02Z
dc.date.available2026-07-21T13:32:02Z
dc.date.issued2014-10-06
dc.description.abstractWe investigate Gaussian mixtures with independent components, whose parameters are numerically estimated. A decomposition of a Gaussian mixture is presented when the components have a common variance. We introduce a shifted and scaled t-Student distribution as an approximation for the distribution of Gaussian mixtures when their components have a common mean and develop a hypothesis test for testing the equality of the components means. Finally, we analyse the fitness of the approximate model to the logarithmic daily returns of the Portuguese stock index PSI-20.eng
dc.description.sponsorshipResearch partially funded by FCT, Portugal, through the project Pest-OE/MAT/UI0006/2014.
dc.identifier.citationFelgueiras, Miguel & Santos, Rui & Martins, João. (2014). Some results on Gaussian mixtures. 1618. 523-526. 10.1063/1.4897790
dc.identifier.doi10.1063/1.4897790
dc.identifier.issn0094-243X
dc.identifier.urihttp://hdl.handle.net/10400.8/16641
dc.language.isoeng
dc.peerreviewedyes
dc.publisherAIP Publishing LLC
dc.relationStrategic Project - UI 6 - 2014
dc.relation.hasversionhttps://pubs.aip.org/aip/acp/article/1618/1/523/903641/Some-results-on-Gaussian-mixtures
dc.relation.ispartofAIP Conference Proceedings
dc.rights.uriN/A
dc.subjectConvex mixtures
dc.subjectGaussian distribution
dc.titleSome results on Gaussian mixtureseng
dc.typeconference paper
dspace.entity.typePublication
oaire.awardNumberPEst-OE/MAT/UI0006/2014
oaire.awardTitleStrategic Project - UI 6 - 2014
oaire.awardURIhttp://hdl.handle.net/10400.8/13114
oaire.citation.conferenceDate2014-04-04
oaire.citation.conferencePlaceAthens, Greece
oaire.citation.endPage526
oaire.citation.startPage523
oaire.citation.titleINTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2014 (ICCMSE 2014)
oaire.citation.volume1618
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameFelgueiras
person.familyNameSantos
person.familyNameOliveira Martins
person.givenNameMiguel
person.givenNameRui
person.givenNameJoão Paulo
person.identifier1051057
person.identifier.ciencia-id0F1B-DE05-36E5
person.identifier.ciencia-id7610-8B27-8044
person.identifier.orcid0000-0001-5450-7374
person.identifier.orcid0000-0002-7371-363X
person.identifier.orcid0000-0002-0474-1397
person.identifier.ridM-8134-2019
person.identifier.ridC-1873-2015
person.identifier.scopus-author-id50861001200
person.identifier.scopus-author-id56979441000
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