[Forum SIS] avviso di seminario - Mathias Drton, University of Chicago

[Maria Giovanna Ranalli]

.: Prof. Mathias Drton, Dept. of Statistics, University of Chicago :.
.: Identifiability of linear structural equation models :.

Venerdi 18 Febbraio, ore 15
Dipartimento di Economia, Finanza e Statistica, Aula 202
Università degli Studi di Perugia

Abstract.
Structural equation models are multivariate statistical models
that are defined by specifying noisy functional relationships among
random variables.  This talk treats the classical case of linear
relationships and additive Gaussian noise terms.  Each linear structural
equation model is associated with a graph and corresponds to a
polynomially parametrized set of positive definite covariance matrices.
A basic problem is to determine which models are identifiable.  In other
words, the problem is to determine the graphs for which the polynomial
parametrization map is injective, possibly only generically so.  I will
discuss recent results on this problem based on joint work with Jan
Draisma, Rina Foygel and Seth Sullivant.

Cordialmente

M. Giovanna Ranalli

~ Dipartimento di Economia, Finanza e Statistica
~ Sezione di Statistica
~ Via Pascoli
~ Universita' degli Studi di Perugia
~ 06123 Perugia - Italy

~ Tel +39 075 5855939
~ Fax +39 075 5855950
~ url: www.stat.unipg.it/~giovanna

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.stat.unipg.it/pipermail/sis/attachments/20110120/6dcd749e/attachment.html>