[ABE-L] Seminários em Estatística e Ciência de Dados - Departamento de Estatística da UFBA

[Paulo C Rodrigues]

Prezados Colegas,

Apenas relembrando do seminário do Prof. Ronny Vallejos, do Departamento de
Matemática, Universidad Técnica Federico Santa Maria, Valparaíso, Chile, às
16h30 de hoje, neste link: https://meet.google.com/iio-crax-pmz.

Um abraço,
Paulo.

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Paulo Canas Rodrigues
*Professor* at Federal University of Bahia <http://ufba.br>, Brazil
*President*, Brazilian Region of the International Biometric Society
<http://www.rbras.org.br>
*President-Elect, International Society for Business and
<https://www.isbis-isi.org/>**Industrial* *Statistics*
<https://www.isbis-isi.org/>
*(Founding) Chair,SIG on Data Science, of the International Statistical
Institute <https://www.isi-web.org/>*
*Vice-Coordinator*, Specialization in Data Science and Big Data
<http://ecd.ufba.br>
*Member of the Board of Directors, *Brazilian Statistical Association
<https://www.redeabe.org.br/>
*Editor for*: CompStat <https://www.springer.com/journal/180>, SOIC
<http://www.iapress.org/index.php/soic>, Biom. Letters
<http://www.up.poznan.pl/biometrical.letters/>, Rev.Bras.Biom.
<http://www.biometria.ufla.br/index.php/BBJ>

*CV Lattes*: http://lattes.cnpq.br/0029960374321970
*Web*: www.paulocanas.org
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On Fri, Oct 1, 2021 at 12:23 PM Paulo C Rodrigues <paulocanas em gmail.com>
wrote:

> Prezados Colegas,
>
> Na próxima terça-feira, dia* 5 de outubro, às 16h30*, vamos dar
> continuidade aos Seminários em Estatística e Ciência de Dados da
> Universidade Federal da Bahia.
>
> Este seminário será ministrado pelo *Professor Ronny Vallejos*, do
> Departamento de Matemática, Universidad Técnica Federico Santa Maria,
> Valparaíso, Chile.
>
> Ronny O. Vallejos received his Bachelor and Master of Science in
> Mathematics from the Universidad Técnica Federico Santa María, Chile in
> 1995 and 1998, respectively. He also received his Master degree in
> Statistics from the University of Connecticut, USA in 2002, and later his
> Ph.D. in Statistics from the University of Maryland Baltimore County in
> 2006. Currently, he is an associate professor in the Department of
> Mathematics at the Universidad Técnica Federico SantaMaría, Chile. His
> research interests are spatial statistics, statistical image processing,
> time series, and agreement measures.
>
>
> Os detalhes do seminários são os seguintes:
>
> ====================================================
> *Title*: Modeling the effective sample size for multivariate spatial
> datasets
>
> *Abstract*:This work focuses on the reduction of sample sizes due to the
> effect of autocorrelation for spatial/time models. This type of problem is
> quite common in several disciplines where the goal is to reduce the number
> of georeferenced observations to be sampled. In the literature the
> effective sample size (ESS) is defined as the number of independent and
> identically distributed observations of a spatial process. Recent research
> extended that definition to more complex models with more general
> conditions for the theoretical developments. In this talk we motivate the
> study of ESS with several practical problems illustrated with real-world
> datasets. Then an overview of the main proposals will be presented,
> including a general definition of ESS for arbitrary spatial regression
> processes as a weighted version of the ESS of each column in the design
> matrix. Examples of different patterned correlation structures are explored
> in order to illustrate the computation of the ESS. We then introduced a
> generalization of the methodology for multivariate spatial variables to
> provide a common effective sample size when all variables have been
> measured at the same locations. Together with the definition, we provide
> examples to investigate what the effective sample size looks like. An
> application for a soil contamination dataset is considered. To reduce the
> dimensions of the process, clustering techniques are applied to obtain
> three bivariate vectors that are modeled using coregionalization models.
>
> *Data*: 16h30 do dia 5 de outubro de 2021
>
> *Transmissão ao vivo online em*: https://meet.google.com/iio-crax-pmz.
>
> ====================================================
>
> Partilhem com os vossos colegas!
>
> São todos bem-vindos!
>
> Um abraço,
> Paulo Canas Rodrigues
> Paulo Henrique Ferreira
>
>
> ----------------------------------------------------------------------------------------------------
> ----------
> Paulo Canas Rodrigues
> *Professor* at Federal University of Bahia <http://ufba.br>, Brazil
> *President*, Brazilian Region of the International Biometric Society
> <http://www.rbras.org.br>
> *President-Elect, International Society for Business and
> <https://www.isbis-isi.org/>**Industrial* *Statistics*
> <https://www.isbis-isi.org/>
> *(Founding) Chair,SIG on Data Science, of the International Statistical
> Institute <https://www.isi-web.org/>*
> *Vice-Coordinator*, Specialization in Data Science and Big Data
> <http://ecd.ufba.br>
> *Member of the Board of Directors, *Brazilian Statistical Association
> <https://www.redeabe.org.br/>
> *Editor for*: CompStat <https://www.springer.com/journal/180>, SOIC
> <http://www.iapress.org/index.php/soic>, Biom. Letters
> <http://www.up.poznan.pl/biometrical.letters/>, Rev.Bras.Biom.
> <http://www.biometria.ufla.br/index.php/BBJ>
>
> *CV Lattes*: http://lattes.cnpq.br/0029960374321970
> *Web*: www.paulocanas.org
>
> ----------------------------------------------------------------------------------------------------
> ----------
>
>
>
>
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