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» On the Complexity of Computing Evolutionary Trees
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FOCS
1998
IEEE
15 years 8 months ago
Quantum Lower Bounds by Polynomials
We examine the number T of queries that a quantum network requires to compute several Boolean functions on f0;1gN in the black-box model. We show that, in the blackbox model, the ...
Robert Beals, Harry Buhrman, Richard Cleve, Michel...
IPPS
2006
IEEE
15 years 10 months ago
Concurrent counting is harder than queuing
In both distributed counting and queuing, processors in a distributed system issue operations which are organized into a total order. In counting, each processor receives the rank...
Srikanta Tirthapura, Costas Busch
CG
1998
Springer
15 years 4 months ago
Smooth transitions in texture-based simplification
We are investigating techniques for providing smooth transitions when simplifying large, static geometric models with texture-based representations (or impostors). Traditionally, ...
Daniel G. Aliaga, Anselmo Lastra
PODS
2007
ACM
171views Database» more  PODS 2007»
16 years 4 months ago
Monadic datalog over finite structures with bounded treewidth
Bounded treewidth and Monadic Second Order (MSO) logic have proved to be key concepts in establishing fixed-parameter tractability results. Indeed, by Courcelle's Theorem we ...
Georg Gottlob, Reinhard Pichler, Fang Wei
COCO
2009
Springer
105views Algorithms» more  COCO 2009»
15 years 11 months ago
Planar Graph Isomorphism is in Log-Space
Graph Isomorphism is the prime example of a computational problem with a wide difference between the best known lower and upper bounds on its complexity. There is a significant ...
Samir Datta, Nutan Limaye, Prajakta Nimbhorkar, Th...