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【明理講堂2022年第51期】11-10同濟大學張真真副教授:Distributionally Robust Chance Constrained p-Hub Center Problem

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

報告人:同濟大學張真真副教授

報告內容簡介:

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.

報告人簡介:

張真真,同濟大學經濟與偉德國際1946bv官網副教授、博士生導師。入選上海市高層次人才計劃(2019)。曾擔任新加坡國立大學工業工程系助理教授,于香港城市大學管理科學系獲得博士學位,廈門大學計算機科學系獲得碩士和學士學位。長期致力于大規模整數規劃和魯棒優化的理論研究與算法設計,及在物流與運輸規劃、智能制造等方面的應用。參與解決了眾多重要的企業問題,例如飛利浦的運輸服務采購問題、香港公立醫院的非緊急救護車調度問題、快時尚品牌CHARLES & KEITH的商品轉配問題、新加坡物流公司的車輛調度問題,所取得的研究成果可幫助其大幅度削減運營成本的同時顯著提高其服務效率及服務質量。目前已發表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。現任世界交通大會(WTC)貨運規劃與物流管理技術委員會委員、管理科學與工程學會交通運輸分會執行秘書長,并長期擔任30多個國際知名期刊的審稿人。

(承辦:管理科學與物流系、科研與學術交流中心)

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