### Stein Wallace (University of Lancaster)

#### Stochastic network design

*Wednesday 28 October 2009 at 15.30, JCMB 6206*

##### Abstract

The purpose of this research is to understand how uncertainty affects
structured integer programs. This talk will focus on two such problem:
The service network design problem (multi-commodity, time-dependent,
network design with conservation-of-flow constraints on the design
variables), and the "classical" single commodity (static) network design
problem. We study the relationship between the stochastic and
deterministic solutions in order to understand what constitutes
robustness in network design. The goal is not to show (once again) how
bad the deterministic solutions are, but to understand specifically what
is lost when formulating deterministic models when the actual situation
is affected by uncertainty.

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