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CORR
2010
Springer
136views Education» more  CORR 2010»
15 years 4 months ago
Schaefer's theorem for graphs
Schaefer's theorem is a complexity classification result for so-called Boolean constraint satisfaction problems: it states that every Boolean constraint satisfaction problem ...
Manuel Bodirsky, Michael Pinsker
PODS
2012
ACM
276views Database» more  PODS 2012»
13 years 9 months ago
Randomized algorithms for tracking distributed count, frequencies, and ranks
We show that randomization can lead to significant improvements for a few fundamental problems in distributed tracking. Our basis is the count-tracking problem, where there are k...
Zengfeng Huang, Ke Yi, Qin Zhang
ISPDC
2007
IEEE
16 years 29 days ago
On Grid-based Matrix Partitioning for Heterogeneous Processors
The problem of optimal matrix partitioning for parallel linear algebra on p heterogeneous processors is typically reduced to the geometrical problem of partitioning a unit square ...
Alexey L. Lastovetsky
TALG
2010
86views more  TALG 2010»
15 years 5 months ago
Approximating corridors and tours via restriction and relaxation techniques
Given a rectangular boundary partitioned into rectangles, the Minimum-Length Corridor (MLC-R) problem consists of finding a corridor of least total length. A corridor is a set of ...
Arturo Gonzalez-Gutierrez, Teofilo F. Gonzalez
ACL
2000
15 years 8 months ago
A Polynomial-Time Fragment of Dominance Constraints
Dominance constraints are logical descriptions of trees that are widely used in computational linguistics. Their general satisfiability problem is known to be NP-complete. Here we...
Alexander Koller, Kurt Mehlhorn, Joachim Niehren