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» Linear Time Algorithms for Exact Distance Transform
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STOC
1995
ACM
194views Algorithms» more  STOC 1995»
13 years 11 months ago
Transforming cabbage into turnip: polynomial algorithm for sorting signed permutations by reversals
Genomes frequently evolve by reversals ␳(i, j) that transform a gene order ␲1 . . . ␲i␲iϩ1 . . . ␲jϪ1␲j . . . ␲n into ␲1 . . . ␲i␲jϪ1 . . . ␲iϩ1␲j . . ....
Sridhar Hannenhalli, Pavel A. Pevzner
EOR
2007
93views more  EOR 2007»
13 years 7 months ago
Exact algorithms for procurement problems under a total quantity discount structure
In this paper, we study the procurement problem faced by a buyer who needs to purchase a variety of goods from suppliers applying a so-called total quantity discount policy. This ...
Dries R. Goossens, A. J. T. Maas, Frits C. R. Spie...
DOCENG
2003
ACM
14 years 1 months ago
Accuracy improvement of automatic text classification based on feature transformation
In this paper, we describe a comparative study on techniques of feature transformation and classification to improve the accuracy of automatic text classification. The normalizati...
Guowei Zu, Wataru Ohyama, Tetsushi Wakabayashi, Fu...
SIAMDM
2008
105views more  SIAMDM 2008»
13 years 6 months ago
A Simple Linear Time LexBFS Cograph Recognition Algorithm
Recently lexicographic breadth first search (LexBFS) has been shown to be a very powerful tool for the development of linear time, easily implementable recognition algorithms for v...
Anna Bretscher, Derek G. Corneil, Michel Habib, Ch...
ESA
2005
Springer
155views Algorithms» more  ESA 2005»
14 years 1 months ago
Highway Hierarchies Hasten Exact Shortest Path Queries
We present a new speedup technique for route planning that exploits the hierarchy inherent in real world road networks. Our algorithm preprocesses the eight digit number of nodes n...
Peter Sanders, Dominik Schultes