時間：11月10日（星期四）上午10:00-11:30
會議號：#騰訊會議：971-196-744
報(bào)告人：同濟(jì)大學(xué)張真真副教授
報(bào)告內(nèi)容簡介:
The p-hub center problem is a fundamental model for the strategic design of hub location. It aims at constructing p fully interconnected hubs and links from nodes to hubs so that the longest path between anytwo nodes is minimized. Existing literature on the p-hub center problem under uncertainty often assumesa joint distribution of travel times, which is difficult (if not impossible) to elicit precisely. In this paper, we bridge the gap by investigating two distributionally robust chance constrained models, which cover theexisting stochastic one with independent normal distribution and the sample average approximation approachas a special case, respectively. We derive deterministic reformulations as a mixed-integer program whereina large number of constraints can be dynamically added via a constraint generation approach to acceleratecomputation. Extensive numerical experiments demonstrate the encouraging out-of-sample performance ofour proposed models as well as the effectiveness of the constraint generation approach.
報(bào)告人簡介：
張真真，同濟(jì)大學(xué)經(jīng)濟(jì)與偉德國際1946bv官網(wǎng)副教授、博士生導(dǎo)師。入選上海市高層次人才計(jì)劃（2019）。曾擔(dān)任新加坡國立大學(xué)工業(yè)工程系助理教授，于香港城市大學(xué)管理科學(xué)系獲得博士學(xué)位，廈門大學(xué)計(jì)算機(jī)科學(xué)系獲得碩士和學(xué)士學(xué)位。長期致力于大規(guī)模整數(shù)規(guī)劃和魯棒優(yōu)化的理論研究與算法設(shè)計(jì)，及在物流與運(yùn)輸規(guī)劃、智能制造等方面的應(yīng)用。參與解決了眾多重要的企業(yè)問題，例如飛利浦的運(yùn)輸服務(wù)采購問題、香港公立醫(yī)院的非緊急救護(hù)車調(diào)度問題、快時尚品牌CHARLES & KEITH的商品轉(zhuǎn)配問題、新加坡物流公司的車輛調(diào)度問題，所取得的研究成果可幫助其大幅度削減運(yùn)營成本的同時顯著提高其服務(wù)效率及服務(wù)質(zhì)量。目前已發(fā)表SCI/SSCI期刊論文20多篇，包括Operations Research（1篇）、Transportation Science（3篇）、Transportation Research Part B（3篇）等?，F(xiàn)任世界交通大會（WTC）貨運(yùn)規(guī)劃與物流管理技術(shù)委員會委員、管理科學(xué)與工程學(xué)會交通運(yùn)輸分會執(zhí)行秘書長，并長期擔(dān)任30多個國際知名期刊的審稿人。
（承辦：管理科學(xué)與物流系、科研與學(xué)術(shù)交流中心）
