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» The Guarding Problem - Complexity and Approximation
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LATIN
2010
Springer
16 years 29 days ago
Kernelization through Tidying
Abstract. We introduce the NP-hard graph-based data clustering problem s-Plex Cluster Vertex Deletion, where the task is to delete at most k vertices from a graph so that the conne...
René van Bevern, Hannes Moser, Rolf Niederm...
ECML
2007
Springer
16 years 9 days ago
Fast Optimization Methods for L1 Regularization: A Comparative Study and Two New Approaches
L1 regularization is effective for feature selection, but the resulting optimization is challenging due to the non-differentiability of the 1-norm. In this paper we compare state...
Mark Schmidt, Glenn Fung, Rómer Rosales
144
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ICANNGA
2007
Springer
133views Algorithms» more  ICANNGA 2007»
16 years 9 days ago
Finding the Optimal Path in 3D Spaces Using EDAs - The Wireless Sensor Networks Scenario
Abstract. In wireless sensor networks where sensors are geographically deployed in 3D spaces, a mobile robot is required to travel to each sensor in order to download the data. The...
Bo Yuan, Maria E. Orlowska, Shazia Wasim Sadiq
CPAIOR
2005
Springer
15 years 11 months ago
Filtering Algorithms for the NValue Constraint
Abstract. The NValue constraint counts the number of different values assigned to a vector of variables. Propagating generalized arc consistency on this constraint is NP-hard. We ...
Christian Bessière, Emmanuel Hebrard, Brahi...
DGCI
2005
Springer
15 years 11 months ago
Uncertain Geometry in Computer Vision
Abstract. We give an overview of the main ideas and tools that have been employed in uncertain geometry. We show how several recognition problems in computer vision can be translat...
Peter Veelaert