Minimizing Congestion in General Networks
FOCS '02 Proceedings of the 43rd Symposium on Foundations of Computer Science
A practical algorithm for constructing oblivious routing schemes
Proceedings of the fifteenth annual ACM symposium on Parallel algorithms and architectures
A polynomial-time tree decomposition to minimize congestion
Proceedings of the fifteenth annual ACM symposium on Parallel algorithms and architectures
Optimal oblivious routing in polynomial time
Proceedings of the thirty-fifth annual ACM symposium on Theory of computing
Hi-index | 0.00 |
We introduce semi-oblivious routing, a generalization of oblivious routing in which multicommodity flows must be routed using a polynomial-sized set of paths which is predefined by the algorithm before the demand matrix for the flow problem is revealed. Our results, which are primarily negative, exclude the possibility of constant-competitive semi-oblivious routing schemes, even when the network is a grid or a seriesparallel graph. We provide an even stronger lower bound on the congestion of constant-bend routing schemes in the grid.