People

Dr Xinan Yang

Senior Lecturer
Department of Mathematical Sciences
Dr Xinan Yang
  • Email

  • Telephone

    +44 (0) 1206 872787

  • Location

    STEM 5.17, Colchester Campus

  • Academic support hours

    Open door policy.

Profile

Biography

I had my first degree in Applied Mathematics in China at Fudan University and then moved tothe UK to pursue my postgraduate studies. Both my MSc and PhD studieswere done at University of Edinburgh in Operational Research. Prior to joining the University of Essex, I worked as a Senior Research Associate in Lancaster University Management School. Graduated PhD students: Ghazwan H M Alsoufi Current PhD students: Dhia Kadhem Hajem A Daham Thanet Chitsuphaphan

Qualifications

  • Ph.D. in Operational Research, Supervisor Andreas Grothey, University of Edinburgh (2011)

  • MSc in Operational Research (with distinction), University of Edinburgh (2007)

  • BSc in Applied Mathematics, Fudan University, China (2006)

Research and professional activities

Research interests

Stochastic Optimization and its applications in various fields,mainly concerned aboutbut not restricted to Telecommunications, Inventory Control, Revenue Management and Energy industry. Major methodologies that have been used/investigated are Dynamic Programming (DP) and Approximate Dynamic Programming (ADP). Exact and heuristic solution methods for mixed integer linear programming problems are alsoinvestigated butare to my secondary interest at the moment.

Current research

Approximate dynamic programming

Markov decision process

Revenue management in e-grocery delivery

Mixed-integer linear programming problems

Teaching and supervision

Current teaching responsibilities

  • Applied Mathematics (MA105)

  • Mathematics Careers and Employability (MA199)

  • Numerical Methods (MA209)

  • Nonlinear Programming (MA305)

  • Dissertation (MA981)

Previous supervision

Hajem Ati Daham
Hajem Ati Daham
Thesis title: Optimization Models for Inland Haulage Transportation of Containers
Degree subject: Operational Research
Degree type: Doctor of Philosophy
Awarded date: 1/3/2019
Dhia Kadhem
Dhia Kadhem
Thesis title: Heuristic Solution Approaches to the Solid Assignment Problem
Degree subject: Operational Research
Degree type: Doctor of Philosophy
Awarded date: 18/1/2018
Ghazwan Hani Mahmood Alsoufi
Ghazwan Hani Mahmood Alsoufi
Thesis title: Mathematical Models of Seaside Operations in Container Ports and Their Solution
Degree subject: Operational Research
Degree type: Doctor of Philosophy
Awarded date: 3/7/2017

Publications

Journal articles (11)

Salhi, A., Alsoufi, G. and Yang, X., (2019). An evolutionary approach to a combined mixed integer programming model of seaside operations as arise in container ports. Annals of Operations Research. 272 (1-2), 69-98

Alsoufi, G., Yang, X. and Salhi, A., (2018). Combined quay crane assignment and quay crane scheduling with crane inter-vessel movement and non-interference constraints. Journal of the Operational Research Society. 69 (3), 372-383

Daham, HA., Yang, X. and Warnes, MK., (2017). An efficient mixed integer programming model for pairing containers in inland transportation based on the assignment of orders. Journal of the Operational Research Society. 68 (6), 678-694

Yang, X. and Strauss, AK., (2017). An approximate dynamic programming approach to attended home delivery management. European Journal of Operational Research. 263 (3), 935-945

Yang, X., Vernitski, A. and Carrea, L., (2016). An approximate dynamic programming approach for improving accuracy of lossy data compression by Bloom filters. European Journal of Operational Research. 252 (3), 985-994

Yang, X., Strauss, AK., Currie, CSM. and Eglese, R., (2016). Choice-Based Demand Management and Vehicle Routing in E-Fulfillment. Transportation Science. 50 (2), 473-488

Yang, X., Vernitski, A. and Carrea, L., (2015). An Approximate Dynamic Programming Approach for Improving Accuracy of Lossy Data Compression by Bloom Filters. European Journal of Operational Research

Alsoufi, G., Yang, X. and Salhi, A., (2015). A combined Mixed Integer Programming model of seaside operations arising in container ports. EURO Journal on Computational Optimization

Grothey, A. and Yang, X., (2012). Approximate dynamic programming with B�zier Curves/Surfaces for Top-percentile Traffic Routing. European Journal of Operational Research. 218 (3), 698-707

Yang, X. and Grothey, A., (2012). Solving the Top-percentile traffic routing problem by Approximate Dynamic Programming. IMA Journal of Management Mathematics. 23 (4), 413-434

Grothey, A. and Yang, X., (2011). Top-percentile traffic routing problem by dynamic programming. Optimization and Engineering. 12 (4), 631-655

Book chapters (1)

Alsoufi, G., Yang, X. and Salhi, A., (2016). Robust Berth Allocation Using a Hybrid Approach Combining Branch-and-Cut and the Genetic Algorithm. In: Hybrid Metaheuristics. Springer International Publishing. 187- 201. 9783319396354

Grants and funding

2018

Dynamic Pricing and emission control for e-grocery fulfilment

University of Essex

The project will improve efficiencies of the system, customer demand and control the price in real time.

Ocado Technology

Contact

xyangk@essex.ac.uk
+44 (0) 1206 872787

Location:

STEM 5.17, Colchester Campus

Academic support hours:

Open door policy.