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TCS
2010
13 years 10 months ago
Class constrained bin packing revisited
We study the following variant of the bin packing problem. We are given a set of items, where each item has a (non-negative) size and a color. We are also given an integer paramet...
Leah Epstein, Csanád Imreh, Asaf Levin
TCS
2010
13 years 10 months ago
CSP duality and trees of bounded pathwidth
We study non-uniform constraint satisfaction problems definable in monadic Datalog stratified by the use of non-linearity. We show how such problems can be described in terms of...
Catarina Carvalho, Víctor Dalmau, Andrei A....
TCS
2010
13 years 10 months ago
Improved upper bounds for vertex cover
Jianer Chen, Iyad A. Kanj, Ge Xia
TCS
2010
13 years 10 months ago
Left-forbidding cooperating distributed grammar systems
In a left-forbidding grammar, a set of nonterminals is attached to every context-free production, and such a production can rewrite a nonterminal if no symbol from the attached se...
Filip Goldefus, Tomás Masopust, Alexander M...
TCS
2010
13 years 10 months ago
On convex complexity measures
Pavel Hrubes, Stasys Jukna, Alexander S. Kulikov, ...
TCS
2010
13 years 10 months ago
A class of hierarchical graphs as topologies for interconnection networks
Pao-Lien Lai, Hong-Chun Hsu, Chang-Hsiung Tsai, Ia...
TCS
2010
13 years 10 months ago
Tight results for Next Fit and Worst Fit with resource augmentation
It is well known that the two simple algorithms for the classic bin packing problem, NF and WF both have an approximation ratio of 2. However, WF seems to be a more reasonable alg...
Joan Boyar, Leah Epstein, Asaf Levin
TCS
2010
13 years 10 months ago
Randomized priority algorithms
Borodin, Nielsen and Rackoff [13] introduced the class of priority algorithms as a framework for modeling deterministic greedy-like algorithms. In this paper we address the effe...
Spyros Angelopoulos, Allan Borodin