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Integer programming algorithms for identifying network matrices in linear systems

Grant number: 06/00793-7
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): June 01, 2006
Effective date (End): May 31, 2007
Field of knowledge:Physical Sciences and Mathematics - Computer Science - Theory of Computation
Principal Investigator:Cid Carvalho de Souza
Grantee:Rafael Forte Araújo Cavalcanti
Host Institution: Instituto de Computação (IC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


In this project we are interested in the obtention of large network matrices that occur as submatrices of the constraint matrix of the Integer Programming models of Combinatorial Optimization problems such as Partition, Covering and Packing of subsets. The goal is to find the largest network submatrix and to this end we will use models and tools from Integer Programming, including enumerative methods like branch-and-bound and Lagrangian relaxation techniques. Dual bounds and optimal solutions obtained in this work will be used to assess the quality of the heuristic solutions generated by algorithms developed in another research project that is being submitted simultaneously. (AU)

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