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    IPCO
    2008
    221views Optimization» more  IPCO 2008»
    A Comparative Study of Linear and Semidefinite Branch-and-Cut Methods for Solving the Minimum Graph Bisection Problem
    13 years 6 months ago
    A Comparative Study of Linear and Semidefinite Branch-and-Cut Methods for Solving the Minimum Graph Bisection Problem
    Download  www-user.tu-chemnitz.de
    Abstract. Semidefinite relaxations are known to deliver good approximations for combinatorial optimization problems like graph bisection. Using the spectral bundle method it is pos...
    Michael Armbruster, Marzena Fügenschuh, Chris...
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    IPCO
    2008
    105views Optimization» more  IPCO 2008»
    Can Pure Cutting Plane Algorithms Work?
    13 years 6 months ago
    Can Pure Cutting Plane Algorithms Work?
    Download  www2.isye.gatech.edu
    We discuss an implementation of the lexicographic version of Gomory's fractional cutting plane method and of two heuristics mimicking the latter. In computational testing on a...
    Arrigo Zanette, Matteo Fischetti, Egon Balas
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    IPCO
    2008
    188views Optimization» more  IPCO 2008»
    Binary Positive Semidefinite Matrices and Associated Integer Polytopes
    13 years 6 months ago
    Binary Positive Semidefinite Matrices and Associated Integer Polytopes
    Download  www.lancs.ac.uk
    We consider the positive semidefinite (psd) matrices with binary entries. We give a characterisation of such matrices, along with a graphical representation. We then move on to co...
    Adam N. Letchford, Michael M. Sørensen
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    IPCO
    2008
    163views Optimization» more  IPCO 2008»
    The Air Traffic Flow Management Problem: An Integer Optimization Approach
    13 years 6 months ago
    The Air Traffic Flow Management Problem: An Integer Optimization Approach
    Download  web.mit.edu
    In this paper, we present a new Integer Program (IP) for the Air Traffic Flow Management (ATFM) problem. The model we propose provides a complete representation of all the phases o...
    Dimitris Bertsimas, Guglielmo Lulli, Amedeo R. Odo...
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    IPCO
    2008
    118views Optimization» more  IPCO 2008»
    Constraint Orbital Branching
    13 years 6 months ago
    Constraint Orbital Branching
    Download  homepages.cae.wisc.edu
    Orbital branching is a method for branching on variables in integer programming that reduces the likelihood of evaluating redundant, isomorphic nodes in the branch-and-bound proce...
    James Ostrowski, Jeff Linderoth, Fabrizio Rossi, S...
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