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MSCS
2007
91views more  MSCS 2007»
15 years 3 months ago
A rewriting calculus for cyclic higher-order term graphs
Introduced at the end of the nineties, the Rewriting Calculus (ρ-calculus, for short) is a simple calculus that fully integrates term-rewriting and λ-calculus. The rewrite rules...
Paolo Baldan, Clara Bertolissi, Horatiu Cirstea, C...
IJCAI
1993
15 years 5 months ago
A Tractable Class of Abduction Problems
literal: Let p be a proposition. Then p and -p are literals. clause: A clause is a disjunction of literals. Horn Clause: A Horn Clause is a clause in which there is at most one po...
Kave Eshghi
NETWORKS
2008
15 years 4 months ago
Grooming for two-period optical networks
Minimizing the number of add-drop multiplexers (ADMs) in a unidirectional SONET ring can be formulated as a graph decomposition problem. When traffic requirements are uniform and ...
Charles J. Colbourn, Gaetano Quattrocchi, Violet R...
COCO
2010
Springer
152views Algorithms» more  COCO 2010»
15 years 8 months ago
A Log-Space Algorithm for Reachability in Planar Acyclic Digraphs with Few Sources
Designing algorithms that use logarithmic space for graph reachability problems is fundamental to complexity theory. It is well known that for general directed graphs this problem...
Derrick Stolee, Chris Bourke, N. V. Vinodchandran
KDD
2008
ACM
142views Data Mining» more  KDD 2008»
16 years 4 months ago
Weighted graphs and disconnected components: patterns and a generator
The vast majority of earlier work has focused on graphs which are both connected (typically by ignoring all but the giant connected component), and unweighted. Here we study numer...
Mary McGlohon, Leman Akoglu, Christos Faloutsos