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» Approximation schemes for clustering problems
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HIS
2003
14 years 11 months ago
On the Performance of Ant-based Clustering
Ant-based clustering and sorting is a nature-inspired heuristic for general clustering tasks. It has been applied variously, from problems arising in commerce, to circuit design, t...
Julia Handl, Joshua D. Knowles, Marco Dorigo
ECCC
2008
98views more  ECCC 2008»
14 years 9 months ago
Public-Key Cryptosystems from the Worst-Case Shortest Vector Problem
We construct public-key cryptosystems that are secure assuming the worst-case hardness of approximating the minimum distance on n-dimensional lattices to within small poly(n) fact...
Chris Peikert
BIRD
2007
Springer
120views Bioinformatics» more  BIRD 2007»
15 years 3 months ago
Joining Softassign and Dynamic Programming for the Contact Map Overlap Problem
Comparison of 3-dimensional protein folds is a core problem in molecular biology. The Contact Map Overlap (CMO) scheme provides one of the most common measures for protein structur...
Brijnesh J. Jain, Michael Lappe
SIAMCOMP
2008
108views more  SIAMCOMP 2008»
14 years 9 months ago
The Euclidean Orienteering Problem Revisited
We consider the rooted orienteering problem: Given a set P of n points in the plane, a starting point r P, and a length constraint B, one needs to find a path starting from r tha...
Ke Chen 0006, Sariel Har-Peled
SIAMCOMP
2011
14 years 15 days ago
Inapproximability Results for Maximum Edge Biclique, Minimum Linear Arrangement, and Sparsest Cut
We consider the Minimum Linear Arrangement problem and the (Uniform) Sparsest Cut problem. So far, these two notorious NP-hard graph problems have resisted all attempts to prove in...
Christoph Ambühl, Monaldo Mastrolilli, Ola Sv...