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» Underspecified computation of normal forms
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FCT
2001
Springer
14 years 1 days ago
The Complexity of Maximum Matroid-Greedoid Intersection
Abstract. The maximum intersection problem for a matroid and a greedoid, given by polynomial-time oracles, is shown NP-hard by expressing the satisfiability of boolean formulas in...
Taneli Mielikäinen, Esko Ukkonen
DAC
2007
ACM
14 years 8 months ago
Alembic: An Efficient Algorithm for CNF Preprocessing
Satisfiability (SAT) solvers often benefit from a preprocessing of the formula to be decided. For formulae in conjunctive normal form (CNF), subsumed clauses may be removed or par...
HyoJung Han, Fabio Somenzi
LICS
2007
IEEE
14 years 1 months ago
Higher-Order Matching, Games and Automata
Higher-order matching is the problem given t = u where t, u are terms of simply typed λ-calculus and u is closed, is there a substitution θ such that tθ and u have the same nor...
Colin Stirling
ANTS
2010
Springer
262views Algorithms» more  ANTS 2010»
13 years 11 months ago
Short Bases of Lattices over Number Fields
Lattices over number elds arise from a variety of sources in algorithmic algebra and more recently cryptography. Similar to the classical case of Z-lattices, the choice of a nice,...
Claus Fieker, Damien Stehlé
DNA
2005
Springer
118views Bioinformatics» more  DNA 2005»
14 years 1 months ago
Molecular Learning of wDNF Formulae
We introduce a class of generalized DNF formulae called wDNF or weighted disjunctive normal form, and present a molecular algorithm that learns a wDNF formula from training example...
Byoung-Tak Zhang, Ha-Young Jang