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APPML
2008
77views more  APPML 2008»
13 years 7 months ago
Antipodality in convex cones and distance to unpointedness
We provide a complete answer to the problem which consists in finding an unpointed convex cone lying at minimal bounded Pompeiu-Hausdorff distance from a pointed one. We give also...
Alfredo N. Iusem, Alberto Seeger
IPPS
2009
IEEE
14 years 2 months ago
Multi-users scheduling in parallel systems
We are interested in this paper to study scheduling problems in systems where many users compete to perform their respective jobs on shared parallel resources. Each user has speci...
Erik Saule, Denis Trystram
DLOG
2007
13 years 10 months ago
Inverse Roles Make Conjunctive Queries Hard
Abstract. Conjunctive query answering is an important DL reasoning task. Although this task is by now quite well-understood, tight complexity bounds for conjunctive query answering...
Carsten Lutz
FOCS
2008
IEEE
14 years 2 months ago
Degree Bounded Network Design with Metric Costs
Given a complete undirected graph, a cost function on edges and a degree bound B, the degree bounded network design problem is to find a minimum cost simple subgraph with maximum...
Yuk Hei Chan, Wai Shing Fung, Lap Chi Lau, Chun Ko...
STOC
2004
ACM
121views Algorithms» more  STOC 2004»
14 years 8 months ago
Lower bounds for dynamic connectivity
We prove an (lg n) cell-probe lower bound on maintaining connectivity in dynamic graphs, as well as a more general trade-off between updates and queries. Our bound holds even if t...
Mihai Patrascu, Erik D. Demaine