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» Approximation Algorithms for Data Placement Problems
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CPM
1999
Springer
141views Combinatorics» more  CPM 1999»
15 years 10 months ago
Approximate Periods of Strings
The study of approximately periodic strings is relevant to diverse applications such as molecular biology, data compression, and computer-assisted music analysis. Here we study di...
Jeong Seop Sim, Costas S. Iliopoulos, Kunsoo Park,...
SODA
2007
ACM
131views Algorithms» more  SODA 2007»
15 years 7 months ago
On the K-simple shortest paths problem in weighted directed graphs
We obtain the first approximation algorithm for finding the k-simple shortest paths connecting a pair of vertices in a weighted directed graph. Our algorithm is deterministic an...
Liam Roditty
STOC
2006
ACM
170views Algorithms» more  STOC 2006»
16 years 6 months ago
Hardness of approximate two-level logic minimization and PAC learning with membership queries
Producing a small DNF expression consistent with given data is a classical problem in computer science that occurs in a number of forms and has numerous applications. We consider ...
Vitaly Feldman
SODA
2008
ACM
101views Algorithms» more  SODA 2008»
15 years 7 months ago
Adaptive local ratio
Local ratio is a well-known paradigm for designing approximation algorithms for combinatorial optimization problems. At a very high level, a local-ratio algorithm first decomposes ...
Julián Mestre
ICPR
2008
IEEE
16 years 7 months ago
Time-series clustering by approximate prototypes
Clustering time-series data poses problems, which do not exist in traditional clustering in Euclidean space. Specifically, cluster prototype needs to be calculated, where common s...
Pasi Fränti, Pekka Nykänen, Ville Hautam...