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CPAIOR
2010
Springer
13 years 10 months ago
An In-Out Approach to Disjunctive Optimization
Cutting plane methods are widely used for solving convex optimization problems and are of fundamental importance, e.g., to provide tight bounds for Mixed-Integer Programs (MIPs). T...
Matteo Fischetti, Domenico Salvagnin
COMGEO
2010
ACM
13 years 7 months ago
Floodlight illumination of infinite wedges
The floodlight illumination problem asks whether there exists a one-to-one placement of n floodlights illuminating infinite wedges of angles 1, . . . , n at n sites p1, . . . , pn...
Matthew Cary, Atri Rudra, Ashish Sabharwal, Erik V...
IWPEC
2009
Springer
14 years 2 months ago
A Probabilistic Approach to Problems Parameterized above or below Tight Bounds
We introduce a new approach for establishing fixed-parameter tractability of problems parameterized above tight lower bounds or below tight upper bounds. To illustrate the approac...
Gregory Gutin, Eun Jung Kim, Stefan Szeider, Ander...
MST
2011
191views Hardware» more  MST 2011»
13 years 2 months ago
Vertex Cover Problem Parameterized Above and Below Tight Bounds
Abstract. We study the well-known Vertex Cover problem parameterized above and below tight bounds. We show that two of the parameterizations (both were suggested by Mahajan, Raman ...
Gregory Gutin, Eun Jung Kim, Michael Lampis, Valia...
TCBB
2008
73views more  TCBB 2008»
13 years 7 months ago
Nature Reserve Selection Problem: A Tight Approximation Algorithm
The Nature Reserve Selection Problem is a problem that arises in the context of studying biodiversity conservation. Subject to budgetary constraints, the problem is to select a set...
Magnus Bordewich, Charles Semple