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2000 | 20 | 2 | 171-194
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Large-scale nonlinear programming algorithm using projection methods

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A method for solving large convex optimization problems is presented. Such problems usually contain a big linear part and only a small or medium nonlinear part. The parts are tackled using two specialized (and thus efficient) external solvers: purely nonlinear and large-scale linear with a quadratic goal function. The decomposition uses an alteration of projection methods. The construction of the method is based on the zigzagging phenomenon and yields a non-asymptotic convergence, not dependent on a large dimension of the problem. The method preserves its convergence properties under limitations in complicating sets by geometric cuts. Various aspects and variants of the method are analyzed theoretically and experimentally.
  • National Institute of Telecommunications, Decision Support System Laboratory, ul. Szachowa 1, 04-894 Warszawa, Poland
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