DC Field | Value | Language |
---|---|---|
dc.contributor.author | Sung, J | - |
dc.contributor.author | Ghahramani, Z | - |
dc.contributor.author | Bang, SY | - |
dc.date.accessioned | 2016-04-01T03:19:19Z | - |
dc.date.available | 2016-04-01T03:19:19Z | - |
dc.date.created | 2010-03-31 | - |
dc.date.issued | 2008-01 | - |
dc.identifier.issn | 1070-9908 | - |
dc.identifier.other | 2009-OAK-0000020318 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/26503 | - |
dc.description.abstract | In this letter, we consider a variational approximate Bayesian inference framework, latent-space variational Bayes (LSVB), in the general context of conjugate-exponential family models with latent variables. In the LSVB approach, we integrate out model parameters in an exact way and then perform the variational inference over only the latent variables. It can be shown that LSVB can achieve better estimates of the model evidence as well as the distribution over the latent variables than the popular variational Bayesian expectation-maximization (VBEM). However, the distribution over the latent variables in LSVB has to be approximated in practice. As an approximate implementation of LSVB, we propose a second-order LSVB (SoLSVB) method. In particular, VBEM can be derived as a special case of a first-order approximation in LSVB (Sung et al. [1]). SoLSVB can capture higher order statistics neglected in VBEM and can therefore achieve a better approximation. Examples of Gaussian mixture models are used to illustrate the comparison between our method and VBEM, demonstrating the improvement. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.relation.isPartOf | IEEE SIGNAL PROCESSING LETTERS | - |
dc.subject | Bayesian inference | - |
dc.subject | conjugate-exponential family | - |
dc.subject | latent variable | - |
dc.subject | mixture of Gaussians | - |
dc.subject | model selection | - |
dc.subject | variational method | - |
dc.title | Second-Order Latent-Space Variational Bayes for Approximate Bayesian Inference | - |
dc.type | Article | - |
dc.contributor.college | 컴퓨터공학과 | - |
dc.identifier.doi | 10.1109/LSP.2008.2001557 | - |
dc.author.google | Sung, J | - |
dc.author.google | Ghahramani, Z | - |
dc.author.google | Bang, SY | - |
dc.relation.volume | 15 | - |
dc.relation.startpage | 918 | - |
dc.relation.lastpage | 921 | - |
dc.relation.journal | IEEE SIGNAL PROCESSING LETTERS | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCIE | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | IEEE SIGNAL PROCESSING LETTERS, v.15, pp.918 - 921 | - |
dc.identifier.wosid | 000263999300100 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 921 | - |
dc.citation.startPage | 918 | - |
dc.citation.title | IEEE SIGNAL PROCESSING LETTERS | - |
dc.citation.volume | 15 | - |
dc.contributor.affiliatedAuthor | Bang, SY | - |
dc.identifier.scopusid | 2-s2.0-67650107019 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 5 | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | Bayesian inference | - |
dc.subject.keywordAuthor | conjugate-exponential family | - |
dc.subject.keywordAuthor | latent variable | - |
dc.subject.keywordAuthor | mixture of Gaussians | - |
dc.subject.keywordAuthor | model selection | - |
dc.subject.keywordAuthor | variational method | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
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