Professor Theodor Stewart

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Profile photo of: Professor Theodor Stewart Email: Show Email Address
Position: Professor of Decision Sciences
Academic unit: Management Sciences and Marketing


After initially graduating with a BSc(Chemical Engineering) at the University of Cape Town (UCT), Theo Stewart continued part-time studies in operations research and statistics through the University of South Africa, completing a BSc (Hons) in 1972, an MSc (OR) the following year, and a PhD in Mathematical Statistics ("Bayes optimal experimental design for determination of a response surface maximum") in 1976. He is currently part-time professor of decision science in the Manchester Business School, and professor emeritus and senior research scholar at the University of Cape Town.

He was Vice President of IFORS (International Federation of Operational Research Societies) for the period 2004-2006, and president of the International Society on Multiple Criteria Decision-making for the period 2004-2008. from which he received the gold medal in 2008. He is a past-president and fellow of both the Operations Research Society of South Africa (ORSSA) and the South African Statistical Association, and has been awarded ORSSA's Tom Roszwadowski Medal on five occasions. He was founder-editor of ORiON, the journal of ORSSA.

Theo Stewart is currently editor-in-chief of the Journal of Multi-Criteria Decision Analysis, and African editor for International Transactions in Operationqal Research (including a period as guest editor for papers emerging from the 1999 triennial conference of the International Federation of Operational Research Societies) and was formerly an associate editor for OMEGA - The International Journal of Management Science. He also serves on the editorial advisory boards of a number of other international journals.

He is a Member of the Academy of Science of South Africa and a Fellow of the Royal Society of South Africa.

Research Interests

Theo Stewart is primarily an operations researcher, and his particular areas of interest are multicriteria decision analysis, multiobjective mathematical programming, Bayesian statistics, and applications of these methods in resource management and industrial planning.

Programme involvement

Specialist fields




Publication summary




Working papers

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Showing 34 publication(s)


  • Stewart, T., & Durbach, I. (2016). Dealing with Uncertainties in MCDA. In S. Greco, M. Ehrgott, & J. Figueira (Eds.), Multiple Criteria Decision Analysis: Satte of the Art Surveys. (pp. 467-496). (International Series in Operations Research & Management Science; Vol. 233). New York: Springer Verlag. . Publication link: 0e7454db-d4cf-4bb6-83db-aa9aafbf2f94




  • Stewart, T. J., Janssen, R., Joubert, A. R., van Beukering, P. J. H. (Ed.), Papyrakis, E. (Ed.), Bouma, J. (Ed.), & Brouwer, R. (Ed.) (2013). A Multicriteria Approach to Equitable Fishing Rights Allocation in South Africa's Western Cape. In Nature's Wealth: The Economics of Ecosystems Services and Poverty. (1st ed., pp. 155-171). Cambridge: Cambridge University Press. . Publication link: 23f1341b-a85a-4a3c-ae7b-1dfd638f5de7


  • Stewart, T. J., Janssen, R., Joubert, A., & Beukering, P. J. H. V. (Ed.) (2012). A multicriteria approach to equitable fishing rights allocation in South Africa's Western Cape. In Nature's Wealth: The Economics of Livelihoods and Ecosystems Services in Africa and Asia. (pp. 104-115). Cambridge University Press. . Publication link: 4747d147-198c-4615-89d6-6c45c72ead46
  • Galluppi, F., Conradt, J., Stewart, T., Eliasmith, C., Horiuchi, T., Tapson, J., ... Etienne-Cummings, R. (2012). Live Demo: Spiking ratSLAM: Rat hippocampus cells in spiking neural hardware. In 2012 IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Electronics and Systems for Better Life and Better Environment, BioCAS 2012 - Conference Publications. (pp. 91). [6418493] DOI: 10.1109/BioCAS.2012.6418493. Publication link: cfa33b68-3b31-4227-ad7a-e2196b31cee5



  • Stewart, T. J., & Lovric, M. (Ed.) (2010). Multicriteria decision analysis. In International Encyclopaedia of Statistical Science. (pp. 872-875). New York: Springer Verlag. . Publication link: 8fe136ff-9b34-45f2-a3af-fadfaa53d130
  • Stewart, T. J., Belton, V., Ehrgott, M. (Ed.), Figueira, J. (Ed.), & Greco, S. (Ed.) (2010). Problem Structuring and MCDA. In Trends in Multiple Criteria Decision Analysis. (pp. 209-239). Springer Verlag. . Publication link: 0b5cb42b-55a5-4686-a134-b4deb47808db
  • Stewart, T. J., Ehrgott, M. (Ed.), Naujoks, B. (Ed.), & Wallenius, J. (Ed.) (2010). Multiple Criteria Decision Making for Sustainable Energy and Transportation Systems. (Lecture Notes in Economics and Mathematical Systems). Springer Verlag.. Publication link: 1bf10d2c-8131-439d-9bbf-0cdc84191147


  • Yang, J. B., Wong, B. Y. H., Xu, D. L., & Stewart, T. J. (2009). Integrating DEA-oriented performance assessment and target setting using interactive MOLP methods. European Journal of Operational Research, 195(1), 205-222. DOI: 10.1016/j.ejor.2008.01.013. Publication link: a79b074f-f141-4cfd-99e0-59e7fa5dec7d


  • Stewart, T., Figueira, J. (Ed.), Greco, S. (Ed.), & Ehrgott, M. (Ed.) (2005). Dealing with uncertainties in MCDA (Multi-criteria decision analysis). In Multiple Criteria Decision Analysis – State of the Art Annotated Surveys, International Series in Operations Research and Management Science. (pp. 445-470). New York: Springer Verlag. . Publication link: ce735053-a121-4f0c-8e79-afffc9f4010a
  • Joubert, A., Stewart, T., Scott, L., Matthee, J., de Vries, L., Gilbert, A., ... van Herwijinen, M. (2005). Fishing rights and small-scale fishers: An evaluation of the rights allocation process and the utilisation of fishing rights in South Africa. ((PREM) Poverty Reduction and Environmental Management). No publisher name.. Publication link: 1c3aa093-7589-403c-aacf-51452525474e


  • Belton, V., Stewart, T., Bedford, T. (Ed.), Christensen, P. (Ed.), & Procaccia, H. (Ed.) (2004). Multicriteria decision analysis. In Decision Analysis for Reliability Assessment. Det Norske Veritas AS, Høvik, Norway. . Publication link: fc3234ae-e511-4fe7-a690-191afc710d85
  • Joubert, A., & Stewart, T. (2004). Guidelines for the use of multicriteria decision analysis in the implementation of the national water act. (Water Research Commission). No publisher name.. Publication link: 36a9f3e9-c72d-445b-8231-c0f935f4e3d4


  • Aerts, J. C. J. H., Van Herwijnen, M., & Stewart, T. J. (2003). Using simulated annealing and spatial goal programming for solving a multi site land use allocation problem. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)|Lect. Notes Comput. Sci.. (Vol. 2632, pp. 448-463). Springer Berlin. . Publication link: 8ccf8475-64d9-4ac5-a856-f33c803e12b2
  • Joubert, A., Stewart, T., & Eberhard, R. (2003). Evaluation of water supply augmentation and water demand management options for the City of Cape Town. Journal of Multi-Criteria Decision Analysis, 12, 17-25. DOI: 10.1002/mcda.342. Publication link: 4fdd808f-9ea9-4793-b808-a617bc47d642
  • Aerts, J. C. J. H., Eisinger, E., Heuvelink, G. B. M., & Stewart, T. J. (2003). Using linear integer programming for multi-site land-use allocation. Geographical Analysis, 35(2), 148-169. . Publication link: dc718ac6-98b5-447d-b75a-3c7b32c16658


  • Stewart, T., & Belton, V. (2002). Multiple Criteria Decision Analysis: An Integrated Approach. Kluwer Academic Publishers, Boston.. Publication link: bec5eeb3-0434-464a-bb51-2c06d7e1c2b5


  • Stewart, T., Joubert, A., & Liu, D. (2001). Group decision support methods to facilitate participative water resource management. (Water Research Commission). No publisher name.. Publication link: 1debcc4e-0eaa-4b19-a47c-e5b0b6ce0d44