43463 event 1255379896 1475891262 <![CDATA[Maximizing a Class of Submodular Utility Functions: An IP Approach]]> TITLE: Maximizing a Class of Submodular Utility Functions: An IP approach

SPEAKER: Dr. Shabbir Ahmed

ABSTRACT:

We report polyhedral results for a class of combinatorial optimization problems involving submodular utility maximization. Strong valid inequalities are derived by lifting lower dimensional inequalities. We provide a complete characterization of the lifting function and its subadditive approximation. Computational experiments with capital budgeting problems show the effectiveness of the derived inequalities within a branch-and-cut approach.

Joint work with Alper Atamturk, UC Berkeley

Paper available at http://www.optimization-online.org/DB_HTML/2008/04/1948.html

Contact: ISyE DOS Optimization Seminars (http://www2.isye.gatech.edu/dos/)

]]> Anita Race
H. Milton Stewart School of Industrial and Systems Engineering
Contact Anita Race]]> <![CDATA[]]> 1242 1795 2688 1377