Seminars and Colloquia by Series

Challenges in Exact Linear Programming: Exact Precision Linear Algebra

Series
ACO Student Seminar
Time
Wednesday, September 17, 2008 - 13:30 for 1.5 hours (actually 80 minutes)
Location
ISyE Executive Classroom
Speaker
Dan Steffy – ISyE, Georgia Tech
A successful approach to solving linear programming problems exactly has been to solve the problems with increasing levels of fixed precision, checking the final basis in exact arithmetic and then doing additional simplex pivots if necessary. This work is a computational study comparing different techniques for the core element of our exact computation: solving sparse rational systems of linear equations exactly.

Network structure estimation for disease modeling

Series
ACO Student Seminar
Time
Wednesday, September 10, 2008 - 13:00 for 1 hour (actually 50 minutes)
Location
ISyE Executive Classroom
Speaker
Joel Sokol – ISyE, Georgia Tech
In order to estimate the spread of potential pandemic diseases and the efficiency of various containment policies, it is helpful to have an accurate model of the structure of human contact networks. The literature contains several explicit and implicit models, but none behave like actual network data with respect to the spread of disease. We discuss the difficulty of modeling real human networks, motivate the study of some open practical questions about network structure, and suggest some possible avenues of attack based on some related research.

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