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» The Tree Inclusion Problem: In Optimal Space and Faster
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GECCO
2006
Springer
170views Optimization» more  GECCO 2006»
13 years 10 months ago
How an optimal observer can collapse the search space
Many metaheuristics have difficulty exploring their search space comprehensively. Exploration time and efficiency are highly dependent on the size and the ruggedness of the search...
Christophe Philemotte, Hugues Bersini
ASPDAC
2001
ACM
104views Hardware» more  ASPDAC 2001»
13 years 10 months ago
Optimal spacing and capacitance padding for general clock structures
Clock-tuning has been classified as important but tough tasks due to the non-convex nature caused by the skew requirements. As a result, all existing mathematical programming appr...
Yu-Min Lee, Hing Yin Lai, Charlie Chung-Ping Chen
SODA
2012
ACM
174views Algorithms» more  SODA 2012»
11 years 9 months ago
Using hashing to solve the dictionary problem
We consider the dictionary problem in external memory and improve the update time of the wellknown buffer tree by roughly a logarithmic factor. For any λ ≥ max{lg lg n, logM/B(...
John Iacono, Mihai Patrascu
JDA
2007
83views more  JDA 2007»
13 years 7 months ago
Optimal leaf ordering of complete binary trees
Ordering a set of items so as to minimize the sum of distances between consecutive elements is a fundamental optimization problem occurring in many settings. While it is NP-hard i...
Ulrik Brandes
WABI
2004
Springer
116views Bioinformatics» more  WABI 2004»
14 years 13 days ago
Topological Rearrangements and Local Search Method for Tandem Duplication Trees
—The problem of reconstructing the duplication history of a set of tandemly repeated sequences was first introduced by Fitch [4]. Many recent studies deal with this problem, show...
Denis Bertrand, Olivier Gascuel