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LICS
2009
IEEE
15 years 11 months ago
Logics with Rank Operators
—We introduce extensions of first-order logic (FO) and fixed-point logic (FP) with operators that compute the rank of a definable matrix. These operators are generalizations o...
Anuj Dawar, Martin Grohe, Bjarki Holm, Bastian Lau...
FOCS
2007
IEEE
15 years 10 months ago
Finding Disjoint Paths in Expanders Deterministically and Online
We describe a deterministic, polynomial time algorithm for finding edge-disjoint paths connecting given pairs of vertices in an expander. Specifically, the input of the algorith...
Noga Alon, Michael R. Capalbo
IPPS
2007
IEEE
15 years 10 months ago
Strategies for Replica Placement in Tree Networks
In this paper, we discuss and compare several policies to place replicas in tree networks, subject to server capacity constraints. The client requests are known beforehand, while ...
Anne Benoit, Veronika Rehn, Yves Robert
WDAG
2007
Springer
125views Algorithms» more  WDAG 2007»
15 years 10 months ago
Approximating Wardrop Equilibria with Finitely Many Agents
We study adaptive routing algorithms in a round-based model. Suppose we are given a network equipped with load-dependent latency functions on the edges and a set of commodities eac...
Simon Fischer, Lars Olbrich, Berthold Vöcking
ICPP
2006
IEEE
15 years 10 months ago
Performance Modeling based on Multidimensional Surface Learning for Performance Predictions of Parallel Applications in Non-Dedi
Modeling the performance behavior of parallel applications to predict the execution times of the applications for larger problem sizes and number of processors has been an active ...
Jay Yagnik, H. A. Sanjay, Sathish S. Vadhiyar