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WADS
2001
Springer
63views Algorithms» more  WADS 2001»
15 years 4 months ago
When Can You Fold a Map?
We explore the following problem: given a collection of creases on a piece of paper, each assigned a folding direction of mountain or valley, is there a flat folding by a sequenc...
Esther M. Arkin, Michael A. Bender, Erik D. Demain...
FOCS
1998
IEEE
15 years 4 months ago
The Complexity of Acyclic Conjunctive Queries
This paper deals with the evaluation of acyclic Boolean conjunctive queries in relational databases. By well-known results of Yannakakis [1981], this problem is solvable in polynom...
Georg Gottlob, Nicola Leone, Francesco Scarcello
ICDT
2010
ACM
141views Database» more  ICDT 2010»
15 years 3 months ago
The Complexity of Rooted Phylogeny problems
Several computational problems in phylogenetic reconstruction can be formulated as restrictions of the following general problem: given a formula in conjunctive normal form where ...
Manuel Bodirsky, Jens K. Mueller
STOC
1990
ACM
135views Algorithms» more  STOC 1990»
15 years 3 months ago
A Separator Theorem for Graphs with an Excluded Minor and its Applications
ions (Extended Abstract) Noga Alon Paul Seymour Robin Thomas Let G be an n-vertex graph with nonnegative weights whose sum is 1 assigned to its vertices, and with no minor isomorp...
Noga Alon, Paul D. Seymour, Robin Thomas
ASIAN
2004
Springer
153views Algorithms» more  ASIAN 2004»
15 years 3 months ago
Chi-Square Matrix: An Approach for Building-Block Identification
This paper presents a line of research in genetic algorithms (GAs), called building-block identification. The building blocks (BBs) are common structures inferred from a set of sol...
Chatchawit Aporntewan, Prabhas Chongstitvatana