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Abstract Details

Activity Number: 401
Type: Contributed
Date/Time: Tuesday, July 31, 2012 : 2:00 PM to 3:50 PM
Sponsor: Section on Statistical Computing
Abstract - #305137
Title: Edge Selection for Undirected Graphs
Author(s): Meng Hwee Victor Ong*+ and Sanjay Chaudhuri
Companies: National University of Singapore and National University of Singapore
Address: Blk 421 Bedok North Road #08-593, Singapore, International, , Singapore
Keywords: UG ; group LARS ; model selection

Undirected Graphs provide a framework to represent relationships between variables. It has seen many applications, like genetic networks etc. In this paper, we develop an efficient method to select the edges of an undirected Graph . Based on group LARS, our method combines the computational efficiency of LARS and and it has the ability to force the selection procedure to ensure symmetry of the edges. Properties of this `Edge selection' method is explored both analytically as well as through simulation study. We further apply out method on the isoprenoid pathways in Arabidopsis thaliana data set.

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