Her main research interests are combinatorial optimization, transportation logistics and operational research. In Hong Kong, she has collaborated with local companies on projects involving workforce scheduling, facility layout, supply chain management and public transit planning. She has published in many academic journals, has been invited as plenary speaker at major international conferences, and served on the editorial boards of the leading journals in her field. Her research has been well supported by the National Science Foundation of USA and the Hong Kong Research Grants Council. She is a Fellow of the Chartered Institute of Logistics and Transport, a Fellow of the Hong Kong Institution of Engineers and a member of the Hong Kong Logistics Council.