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» The Guarding Problem - Complexity and Approximation
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APPROX
2004
Springer
119views Algorithms» more  APPROX 2004»
15 years 12 months ago
Cost-Sharing Mechanisms for Network Design
We consider a single-source network design problem from a game-theoretic perspective. Gupta, Kumar and Roughgarden (Proc. 35th Annual ACM STOC, pages 365–372, 2003) developed a ...
Anupam Gupta, Aravind Srinivasan, Éva Tardo...
ISAAC
2004
Springer
137views Algorithms» more  ISAAC 2004»
15 years 12 months ago
The Polymatroid Steiner Problems
The Steiner tree problem asks for a minimum cost tree spanning a given set of terminals S ⊆ V in a weighted graph G = (V, E, c), c : E → R+ . In this paper we consider a genera...
Gruia Calinescu, Alexander Zelikovsky
ICASSP
2008
IEEE
16 years 1 months ago
A fast approximate joint diagonalization algorithm using a criterion with a block diagonal weight matrix
We propose a new algorithm for Approximate Joint Diagonalization (AJD) with two main advantages over existing state-of-the-art algorithms: Improved overall running speed, especial...
Petr Tichavský, Arie Yeredor, Jan Nielsen
DEXAW
1999
IEEE
168views Database» more  DEXAW 1999»
15 years 11 months ago
Using the Distance Distribution for Approximate Similarity Queries in High-Dimensional Metric Spaces
We investigate the problem of approximate similarity (nearest neighbor) search in high-dimensional metric spaces, and describe how the distance distribution of the query object ca...
Paolo Ciaccia, Marco Patella
APPROX
2008
Springer
124views Algorithms» more  APPROX 2008»
15 years 8 months ago
Deterministic 7/8-Approximation for the Metric Maximum TSP
We present the first 7/8-approximation algorithm for the maximum traveling salesman problem with triangle inequality. Our algorithm is deterministic. This improves over both the r...
Lukasz Kowalik, Marcin Mucha