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Activity Number: 201
Type: Topic Contributed
Date/Time: Monday, August 3, 2009 : 2:00 PM to 3:50 PM
Sponsor: IMS
Abstract - #303837
Title: Algebraic Methods in Statistics
Author(s): Ahmad S. Yasamin*+
Companies: Statistical and Applied Mathematical Sciences Institute
Address: 19 TW Alexander Drive, Durham, 27709,
Keywords: graphical model ; Gaussain model ; chromatic number ; clique number ; treewidth
Abstract:

In this talk we discuss the existence of the maximum likelihood estimator for Gaussian graphical models. Concerning this, we define an invariant graph parameter, discuss its properties, and compare it with some other graph parameters in the literature. In the end, for some graphs we compute the numeric value of this parameter.

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