@conference {17562,
title = {Approximation algorithms for stochastic and risk-averse optimization},
booktitle = {Proceedings of the eighteenth annual ACM-SIAM symposium on Discrete algorithms},
series = {SODA {\textquoteright}07},
year = {2007},
month = {2007///},
pages = {1305 - 1313},
publisher = {Society for Industrial and Applied Mathematics},
organization = {Society for Industrial and Applied Mathematics},
address = {Philadelphia, PA, USA},
abstract = {We present improved approximation algorithms in stochastic optimization. We prove that the multi-stage stochastic versions of covering integer programs (such as set cover and vertex cover) admit essentially the same approximation algorithms as their standard (non-stochastic) counterparts; this improves upon work of Swamy \& Shmoys that shows an approximability which depends multiplicatively on the number of stages. We also present approximation algorithms for facility location and some of its variants in the 2-stage recourse model, improving on previous approximation guarantees.},
isbn = {978-0-898716-24-5},
url = {http://dl.acm.org/citation.cfm?id=1283383.1283523},
author = {Srinivasan, Aravind}
}