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» Optimal Solvers for PDE-Constrained Optimization
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COR
2004
291views more  COR 2004»
14 years 11 months ago
Cycling in linear programming problems
We collected and analyzed a number of linear programming problems that have been shown to cycle (not converge) when solved by Dantzig's original simplex algorithm. For these ...
Saul I. Gass, Sasirekha Vinjamuri
SIGMOD
2010
ACM
208views Database» more  SIGMOD 2010»
14 years 10 months ago
An automated, yet interactive and portable DB designer
Tuning tools attempt to configure a database to achieve optimal performance for a given workload. Selecting an optimal set of physical structures is computationally hard since it ...
Ioannis Alagiannis, Debabrata Dash, Karl Schnaitte...
ICTAI
2010
IEEE
14 years 9 months ago
Combining Mixed Integer Programming and Supervised Learning for Fast Re-planning
We introduce a new plan repair method for problems cast as Mixed Integer Programs. In order to tackle the inherent complexity of these NP-hard problems, our approach relies on the ...
Emmanuel Rachelson, Ala Ben Abbes, Sebastien Dieme...
IPPS
2010
IEEE
14 years 9 months ago
Solving the advection PDE on the cell broadband engine
In this paper we present the venture of porting two different algorithms for solving the two-dimensional advection PDE on the CBE platform, an in-place and an outof-place one, and ...
Georgios Rokos, Gerassimos Peteinatos, Georgia Kou...
SIAMJO
2010
127views more  SIAMJO 2010»
14 years 6 months ago
Trace Norm Regularization: Reformulations, Algorithms, and Multi-Task Learning
We consider a recently proposed optimization formulation of multi-task learning based on trace norm regularized least squares. While this problem may be formulated as a semidefini...
Ting Kei Pong, Paul Tseng, Shuiwang Ji, Jieping Ye