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COMBINATION OF TWO UNDERESTIMATORS FOR UNIVARIATE GLOBAL OPTIMIZATION

机译:结合两个估计不足以进行全局全局优化

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摘要

In this work, we propose a new underestimator in branch and bound algorithm for solving univariate global optimization problems. The new underestimator is a combination of two underestimators, the classical one used in alpha BB method (see Androulakis et al. [J. Glob. Optim. 7 (1995) 337-3637]) and the quadratic underestimator developed in Hoai An and Ouanes [RAIRO: OR 40 (2006) 285-302]. We show that the new underestimator is tighter than the two underestimators. A convex/concave test is used to accelerate the convergence of the proposed algorithm. The convergence of our algorithm is shown and a set of test problems given in Casado et al. [J. Glob. Optim. 25 (2003) 345-362] are solved efficiently.
机译:在这项工作中,我们在分支定界算法中提出了一种新的低估器,用于解决单变量全局优化问题。新的低估器是两个低估器的组合,这是在alpha BB方法中使用的经典低估器(请参阅Androulakis等人[J. Glob。Optim。7(1995)337-3637])和在Hoai An和Ouanes开发的二次低估器。 [RAIRO:OR 40(2006)285-302]。我们表明,新的低估比两个低估都严格。使用凸/凹测试来加快算法的收敛速度。显示了我们算法的收敛性,并在Casado等人中给出了一系列测试问题。 [J.球最佳25(2003)345-362]得到有效解决。

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