王 煒,田珍菊,姜 珊
(遼寧師范大學(xué)數(shù)學(xué)學(xué)院,遼寧大連 116029)
求解非線性優(yōu)化問題的一個非線性Lagrange函數(shù)
王 煒,田珍菊,姜 珊
(遼寧師范大學(xué)數(shù)學(xué)學(xué)院,遼寧大連 116029)
提出了一個求解非凸的具有不等式約束的非線性優(yōu)化問題的一個非線性Lagrange函數(shù),并討論了在K-T點(diǎn)的性質(zhì)。收斂定理表明,在適當(dāng)?shù)臈l件下,當(dāng)參數(shù)k大于某一閾值k0時,產(chǎn)生的點(diǎn)列具有局部收斂性,由此給出了與罰參數(shù)相關(guān)的解的誤差估計(jì)。
非線性Lagrange函數(shù);非線性優(yōu)化;收斂性
考慮具有不等式約束的非線性規(guī)劃問題:

本文提出另一個解決非凸規(guī)劃問題的非線性Lagrange函數(shù)


非線性Lagrange函數(shù)(2)在K-T點(diǎn)(x*,μ*)處具有如下性質(zhì):







本文的論證說明了G(x,μ,k)具有很好的性質(zhì),在適當(dāng)?shù)臈l件下,基于該函數(shù)的迭代點(diǎn)列具有局部收斂性,并且給出了解的誤差估計(jì),為解決非線性優(yōu)化問題提供了一個新的途徑。關(guān)于G(x,μ, k)的對偶理論及數(shù)值結(jié)果將會在其他文章中研究。
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A Nonlinear Lagrangian for Nonlinear Optim ization WANGW ei,TIAN Zhen-ju,JING Shan
(School ofMathematics,LiaoningNormalUniversity,Dalian Liaoning 116029,China)
This paperproposes a nonlinearLagrangian for solving nonconvex,nonlinearoptimization problems with inequality constraints.It discusses properties of the function at the K-T point.The convergence theorem shows that the sequence of iterate points generated based on the proposed nonlinearLagrangian is locally convergentwhen the penalty k parameter is larger than a threshold k0under a set of suitable conditions on problem functions,thereby giving the error estimate for the solution,depending on the penalty parameter.
nonlinearLagrangian function;nonlinear optimization;convergence
O221.2
A
1009-315X(2010)01-0031-04
2009-07-11
遼寧省教育廳高等學(xué)校科研項(xiàng)目(2008376)。
王煒(1960-),女,遼寧本溪人,教授,博士,碩士生導(dǎo)師,主要從事運(yùn)籌學(xué)與控制論研究。
(責(zé)任編輯 鄒永紅)