{"abstract":[{"text":"In a (randomized) oblivious routing scheme the path chosen for a request
between a source $s$ and a target $t$ is independent from the current traffic
in the network. Hence, such a scheme consists of probability distributions
over $s-t$ paths for every source-target pair $s,t$ in the network.
In a recent result citeR02 it was shown that for any undirected network
there is an oblivious routing scheme that achieves a polylogarithmic
competitive ratio with respect to congestion. Subsequently, Azar et
al. citeACF+03 gave a polynomial time algorithm that for a given network
constructs the best oblivious routing scheme, i.e. the scheme that guarantees
the best possible competitive ratio.
Unfortunately, the latter result is based on the Ellipsoid algorithm; hence
it is unpractical for large networks.
In this paper we present a combinatorial algorithm for constructing an
oblivious routing scheme that guarantees a competitive ratio of $O(log^4n)$
for undirected networks. Furthermore, our approach yields a proof
for the existence of an oblivious routing scheme with competitive ratio
$O(log^3n)$, which is much simpler than the original proof from citeR02.","lang":"eng"}],"citation":{"apa":"Bienkowski, M., Korzeniowski, M., & Räcke, H. (2003). A practical algorithm for constructing oblivious routing schemes. In Proceedings of the fifteenth annual ACM symposium on Parallel algorithms and architectures - SPAA ’03. https://doi.org/10.1145/777412.777418","ieee":"M. Bienkowski, M. Korzeniowski, and H. Räcke, “A practical algorithm for constructing oblivious routing schemes,” in Proceedings of the fifteenth annual ACM symposium on Parallel algorithms and architectures - SPAA ’03, 2003.","chicago":"Bienkowski, Marcin, Miroslaw Korzeniowski, and Harald Räcke. “A Practical Algorithm for Constructing Oblivious Routing Schemes.” In Proceedings of the Fifteenth Annual ACM Symposium on Parallel Algorithms and Architectures - SPAA ’03, 2003. https://doi.org/10.1145/777412.777418.","mla":"Bienkowski, Marcin, et al. “A Practical Algorithm for Constructing Oblivious Routing Schemes.” Proceedings of the Fifteenth Annual ACM Symposium on Parallel Algorithms and Architectures - SPAA ’03, 2003, doi:10.1145/777412.777418.","short":"M. Bienkowski, M. Korzeniowski, H. Räcke, in: Proceedings of the Fifteenth Annual ACM Symposium on Parallel Algorithms and Architectures - SPAA ’03, 2003.","ama":"Bienkowski M, Korzeniowski M, Räcke H. A practical algorithm for constructing oblivious routing schemes. In: Proceedings of the Fifteenth Annual ACM Symposium on Parallel Algorithms and Architectures - SPAA ’03. ; 2003. doi:10.1145/777412.777418","bibtex":"@inproceedings{Bienkowski_Korzeniowski_Räcke_2003, title={A practical algorithm for constructing oblivious routing schemes}, DOI={10.1145/777412.777418}, booktitle={Proceedings of the fifteenth annual ACM symposium on Parallel algorithms and architectures - SPAA ’03}, author={Bienkowski, Marcin and Korzeniowski, Miroslaw and Räcke, Harald}, year={2003} }"},"_id":"18907","publication":"Proceedings of the fifteenth annual ACM symposium on Parallel algorithms and architectures - SPAA '03","date_updated":"2022-01-06T06:53:54Z","doi":"10.1145/777412.777418","status":"public","date_created":"2020-09-03T07:44:01Z","publication_identifier":{"isbn":["1581136617"]},"title":"A practical algorithm for constructing oblivious routing schemes","year":"2003","publication_status":"published","author":[{"first_name":"Marcin","full_name":"Bienkowski, Marcin","last_name":"Bienkowski"},{"full_name":"Korzeniowski, Miroslaw","last_name":"Korzeniowski","first_name":"Miroslaw"},{"first_name":"Harald","last_name":"Räcke","full_name":"Räcke, Harald"}],"type":"conference","department":[{"_id":"63"}],"language":[{"iso":"eng"}],"user_id":"15415"}