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dc.contributor.authorComas Cufí, Marc
dc.contributor.authorMartín-Fernández, Josep Antoni
dc.contributor.authorMateu-Figueras, Glòria
dc.date.accessioned2018-01-12T15:30:12Z
dc.date.available2018-01-12T15:30:12Z
dc.date.issued2016-12-19
dc.identifier.citationComas Cufí, M.; Martín-Fernández, J. A.; Mateu-Figueras, G. Log-ratio methods in mixture models for compositional data sets. "SORT", 19 Desembre 2016, vol. 1, p. 349-374.
dc.identifier.issn1696-2281
dc.identifier.urihttp://hdl.handle.net/2117/112749
dc.description.abstractWhen traditional methods are applied to compositional data misleading and incoherent results could be obtained. Finite mixtures of multivariate distributions are becoming increasingly important nowadays. In this paper, traditional strategies to fit a mixture model into compositional data sets are revisited and the major difficulties are detailed. A new proposal using a mixture of distributions defined on orthonormal log-ratio coordinates is introduced. A real data set analysis is presented to illustrate and compare the different methodologies.
dc.format.extent26 p.
dc.language.isoeng
dc.publisherInstitut d'Estadística de Catalunya
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Estadística matemàtica
dc.subject.otherCompositional data
dc.subject.otherFinite Mixture
dc.subject.otherLog ratio
dc.subject.otherModel-based clustering
dc.subject.otherNormal distribution
dc.subject.otherOrthonormal coordinates
dc.subject.otherSimplex
dc.titleLog-ratio methods in mixture models for compositional data sets
dc.typeArticle
dc.description.peerreviewedPeer Reviewed
dc.subject.amsClassificació AMS::62 Statistics::62E Distribution theory
dc.subject.amsClassificació AMS::62 Statistics::62G Nonparametric inference
dc.subject.amsClassificació AMS::62 Statistics::62H Multivariate analysis
dc.rights.accessOpen Access
local.citation.publicationNameSORT
local.citation.volume1
local.citation.startingPage349
local.citation.endingPage374


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