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» On Multiple Linear Approximations
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IPL
2006
115views more  IPL 2006»
14 years 11 months ago
Approximate maximum weight branchings
We consider a special subgraph of a weighted directed graph: one comprising only the k heaviest edges incoming to each vertex. We show that the maximum weight branching in this su...
Amitabha Bagchi, Ankur Bhargava, Torsten Suel
IPL
2007
99views more  IPL 2007»
14 years 11 months ago
Approximation algorithms for minimizing segments in radiation therapy
Intensity modulated radiation therapy (IMRT) is one of the most effective modalities for modern cancer treatment. The key to successful IMRT treatment hinges on the delivery of a...
Shuang Luan, Jared Saia, Maxwell Young
CVPR
2010
IEEE
14 years 10 months ago
Transform Coding for Fast Approximate Nearest Neighbor Search in High Dimensions
We examine the problem of large scale nearest neighbor search in high dimensional spaces and propose a new approach based on the close relationship between nearest neighbor search...
Jonathan Brandt
MICS
2010
137views more  MICS 2010»
14 years 9 months ago
Finding Range Minima in the Middle: Approximations and Applications
Abstract. A Range Minimum Query asks for the position of a minimal element between two specified array-indices. We consider a natural extension of this, where our further constrai...
Johannes Fischer, Volker Heun
MST
2010
140views more  MST 2010»
14 years 9 months ago
Approximability of Clausal Constraints
We study a family of problems, called Maximum Solution (Max Sol), where the objective is to maximise a linear goal function over the feasible integer assignments to a set of variab...
Peter Jonsson, Gustav Nordh