全校師生：
我校定于2020年11月27日舉辦研究生靈犀學(xué)術(shù)殿堂——彭拯教授報(bào)告會(huì)，現(xiàn)將有關(guān)事項(xiàng)通知如下：
1.報(bào)告會(huì)簡(jiǎn)介
報(bào)告人：彭拯教授
時(shí)間：2020年11月27日(星期五) 15：00
地點(diǎn)：數(shù)學(xué)與統(tǒng)計(jì)學(xué)院214室
報(bào)告題目：一種求解非光滑黎曼流形優(yōu)化問(wèn)題的非精確增廣拉格朗日算法
內(nèi)容簡(jiǎn)介：We consider a nonsmooth optimization problem on Riemannian manifold, whose objective function is the sum of a differentiable component and a nonsmooth convex function. We first reformulate this problem to a separable form, and then propose a manifold inexact augmented Lagrangian method for the separable problem. By utilizing the Moreau envelope, we get a smoothing subproblem at each iteration of the proposed method. Theoretically, the convergence to critical point of the proposed method is established under some mild assumptions. In particular, if an approximate global minimizer of the iteration subproblem is obtained at each iteration, we prove that the sequence generated by the proposed method converges to a global minimizer of the origin problem. Numerical experiments show that, the proposed method is a competitive method compared to some existing methods.
2.歡迎各學(xué)院師生前來(lái)聽(tīng)報(bào)告。報(bào)告會(huì)期間請(qǐng)關(guān)閉手機(jī)或?qū)⑹謾C(jī)調(diào)至靜音模式。
西北工業(yè)大學(xué)黨委學(xué)生工作部
數(shù)學(xué)與統(tǒng)計(jì)學(xué)院
復(fù)雜系統(tǒng)動(dòng)力學(xué)與控制工信部重點(diǎn)實(shí)驗(yàn)室
2020年11月25日
報(bào)告人簡(jiǎn)介
彭拯，博士，湘潭大學(xué)數(shù)學(xué)與計(jì)算科學(xué)學(xué)院教授、博士生導(dǎo)師。主要從事數(shù)學(xué)優(yōu)化理論、算法及其應(yīng)用研究，發(fā)表論文近40篇，部分論文發(fā)表在SIAM Journal on Imaging Sciences，Journal of Global Optimization，TCAD等知名期刊。曾主持和參加國(guó)家自然科學(xué)基金等各類(lèi)科研項(xiàng)目10余項(xiàng)；目前擔(dān)任中國(guó)運(yùn)籌學(xué)會(huì)理事、福建省運(yùn)籌學(xué)會(huì)秘書(shū)長(zhǎng)等學(xué)術(shù)職位。
