About: Factor Analysis Of Scintigraphic Image Sequences With Integrated Convolution Model Of Factor Curves

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Factor analysis and deconvolution are commonly used tools in analysis of time activity analysis of biological organs in scintigraphic data. Typically, these are used independently such that the output of the former is taken as an input to the latter. Each method is thus unaware of the restrictions imposed by the other and fails to respect them. In this paper, we propose a probabilistic model that integrates convolution into the factor analysis model. We develop an approximate Bayesian estimation of the model parameters based on Variational Bayes approximation. The new variant of the factor analysis model is suitable for modeling of a range of biological processes where convolution kernels are known to have restricted shapes. Properties of the new model are illustrated on analysis of data from dynamic renal scintigraphy. The proposed model provides more realistic estimates of the convolution kernels. Factor analysis and deconvolution are commonly used tools in analysis of time activity analysis of biological organs in scintigraphic data. Typically, these are used independently such that the output of the former is taken as an input to the latter. Each method is thus unaware of the restrictions imposed by the other and fails to respect them. In this paper, we propose a probabilistic model that integrates convolution into the factor analysis model. We develop an approximate Bayesian estimation of the model parameters based on Variational Bayes approximation. The new variant of the factor analysis model is suitable for modeling of a range of biological processes where convolution kernels are known to have restricted shapes. Properties of the new model are illustrated on analysis of data from dynamic renal scintigraphy. The proposed model provides more realistic estimates of the convolution kernels. (en)
Title	Factor Analysis Of Scintigraphic Image Sequences With Integrated Convolution Model Of Factor Curves Factor Analysis Of Scintigraphic Image Sequences With Integrated Convolution Model Of Factor Curves (en)
skos:prefLabel	Factor Analysis Of Scintigraphic Image Sequences With Integrated Convolution Model Of Factor Curves Factor Analysis Of Scintigraphic Image Sequences With Integrated Convolution Model Of Factor Curves (en)
skos:notation	RIV/67985556:_____/11:00361017!RIV12-AV0-67985556
http://linked.open...avai/predkladatel	Ústav teorie informace a automatizace AV ČR, v. v. i.
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z10750506)
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Šmídl, Václav Tichý, Ondřej
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav teorie informace a automatizace AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	199183
http://linked.open...ai/riv/idVysledku	RIV/67985556:_____/11:00361017
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	factor analysis; blind decomvolution; image sequences (en)
http://linked.open.../riv/klicoveSlovo	blind decomvolution image sequences factor analysis
http://linked.open...ontrolniKodProRIV	[1932CEC3A168]
http://linked.open...v/mistoKonaniAkce	Cambridge
http://linked.open...i/riv/mistoVydani	Cambridge, UK
http://linked.open...i/riv/nazevZdroje	Proceedings of the second international conference on computational bioscience
http://linked.open...in/vavai/riv/obor	BB
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Šmídl, Václav Tichý, Ondřej Šámal, M.
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2011-07-11 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Pokročilé matematické metody získávání, zpracování a využití informací a znalostí ve složitých a nedeterministických systémech
number of pages	7 (xsd:int)
http://purl.org/ne...btex#hasPublisher	IASTED
https://schema.org/isbn	978-0-88986-889-2
is http://linked.open...avai/riv/vysledek of	Factor Analysis Of Scintigraphic Image Sequences With Integrated Convolution Model Of Factor Curves Factor Analysis Of Scintigraphic Image Sequences With Integrated Convolution Model Of Factor Curves

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