Decision Sciences and Operations Research

Our key research focus areas include

  • Linear, integer, and nonlinear optimization
  • Network theory and network design
  • Algorithms
  • Metaheuristics
  • Multi-criteria decision making
  • Stochastic processes
  • Queueing theory
  • Stochastic programming
  • Forecasting models
  • Military operations research

Members of the research group

Selected projects

  • Belirsizlik Altında Esnek Tesis Yerleşimi için Yenilikçi Yaklaşımlar, METU BAP-03-07-2015-002, January 2015 - December 2015. Team member(s): Süral H., Çelik M., Efeoğlu B.
  • Interactive Approaches for Bi-Objective UAV Route Planning in Continuous Space, AF Office of Scientific Research, 2015 - Ongoing. Team member(s): Köksalan M., Tezcaner-Öztürk C., Türeci H., Bakan Ş.
  • HERİKKS Harp Yönetimi Yazılımı – Füze Tehdit Değerlendirme ve Silah Tahsis (F-TDST) Projesi (Missile Target-Weapon Allocation in Air Defense for ASELSAN, ASELSAN, March 2015 - August 2015. Team member(s): Kırca Ö., Köksal G., Dinler D., Gökayaz G., Kemikli G.
  • Minimum Ağırlıklı Maksimum Eşleme Problemi için Polihedral Yaklaşımlar, METU BAP-08-11-2014-006, January 2015 - December 2015. Team member(s): Tural M.K.
  • Çok Amaçlı Ürün ve Süreç Tasarımı Optimizasyonu için Etkileşimli Yaklaşımlar, METU BAP-03-07-2014-002, January 2014 - December 2015. Team member(s): Köksalan M., Köksal G., Özateş M.
  • Çok Amaçlı Sıralama Problemleri için Etkileşimli ve Olasılıklı Yaklaşımlar, BAP-03-07-2014-001, January 2014 - December 2014. Team member(s): Serin Y., Köksalan M., Mutlu S.
  • Optimizasyon ve Genel Denge Modelleri Aracılığı ile Çok Amaçlı Enerji ve Çevre Politikaları Analizi, METU BAP-08-11-2014-019, January 2014 - December 2014. Team member(s): Köksalan M., Voyvoda E., Yıldız Ş.
  • CONCOORD - Consolidation and Coordination in Urban Areas - Joint Programming Initiative Urban Europe, April 2013 - Ongoing. Team member(s): Süral H., İyigün C., Gürel S., Kunter U.C., Farham M.S., Pancaroğlu M. Project Partners: Eindhoven University of Technology, University of Twente, Technical University Denmark, Vienna University of Economics and Busin.
  • Substitution Policies and an Analysis of Benefit of Substitution for Manufacturers, TÜBİTAK-112M431, June 2012 - March 2014. Team member(s): Savaşaneril S., Töre N.
  • Havayolu Taşımacılığında Çizelge Aksaklıkları Yönetimi, METU BAP-08-11-2011-125, January 2011 - Ongoing. Team member(s): Gürel S., Arıkan U.
  • Etkin Radar Silah Yerleşim Planlama Algoritmasının Geliştirilmesi, ASELSAN, December 2014 - June 2015. Team member(s): İyigün C., Limon Y.
  • Development of Performance Based Project Management Decision Support System for Construction Project Consultancy Companies, ES Proje, June 2014 - June 2015. Team member(s): Duran S.
  • Smart Energy Aware Systems – Development of Optimization Models to be Integrated in Smart Home Systems, INNOVA, August 2014 - August 2015. Team member(s): Duran S., İyigün C.

Selected publications

  • Arıkan U., Gürel S., Aktürk M.S. (2016), Integrated aircraft and passenger recovery with cruise time controllability, Annals of Operations Research, 236(2), pp 295-317.
  • Dinler D., Tural M.K. (2016), A minisum location problem with regional demand considering farthest euclidean distances, Optimization Methods and Software, 31(3), pp 446-470.
  • Karakaya G., Köksalan M. (2016), An interactive approach for bi-attribute multi-item auctions, Annals of Operations Research, 245, pp 97-119.
  • Karasakal E., Silav A. (2016), A multi-objective genetic algorithm for a bi-objective facility location problem with partial coverage, TOP, 24(1), pp 206-232.
  • Köksalan M., Şakar C.T. (2016), An interactive approach to stochastic programming-based portfolio optimization, Annals of Operations Research, 245, pp 47-66.
  • Tural M.K. (2016), Maximal matching polytope in trees, Optimization Methods and Software, 31(3), pp 471-478.
  • Azizoğlu, M., Çetinkaya F.C., Kırbıyık S. (2015), LP relaxation-based solution algorithms for the multi-mode project scheduling with a non-renewable resource, European Journal of Industrial Engineering, 9(4), pp 450-469.
  • Çavdar B., Sokol J. (2015), TSP race: Minimizing completion time in time-sensitive applications, European Journal of Operational Research, 244(1), pp 47-54.
  • Çavdar B., Sokol J. (2015), A distribution-free TSP tour length estimation model for random graphs, European Journal of Operational Research, 243(2), pp 588-598.
  • Çelik B., Karasakal E., İyigün C. (2015), A probabilistic multiple criteria sorting approach based on distance functions, Expert Systems with Applications, 42(7).
  • Damgacıoğlu H., Dinler D., Özdemirel N.E., İyigün C. (2015), A genetic algorithm for the uncapacitated single allocation planar hub location problem, Computers & Operations Research, 62, pp 224-236.
  • Dinler D., Tural M.K., İyigün C. (2015), Heuristics for a continuous multi-facility location problem with demand regions, Computers & Operations Research, 62, pp 237-256.
  • Duran A.S., Gürel S., Aktürk M.S. (2015), Robust airline scheduling with controllable cruise times and chance constraints, IIE Transactions, 47, pp 64–83.
  • Farham M.S., Süral H., İyigün C. (2015), The Weber problem in congested regions with entry and exit points, Computers & Operations Research, 62, pp 177-183.
  • Özmen M., Tunç S., Yağız G., Yıldırım S. , Yıldız E., Köksalan M., Gürel S. (2015), Merkezi vezne yer seçimi ve ATM envanter yönetim politikaları ile nakit yönetim sistemi optimizasyonu, Endüstri Mühendisliği Dergisi, 26(2), pp 4-20.
  • Avşar Z.M., Zijm W.H. (2014), Approximate queueing models for capacitated multi-stage inventory systems under base-stock control, European Journal of Operational Research, 236(1), pp 135-146.
  • Çolak E., Azizoğlu M. (2014), A resource investment problem with time/resource trade-offs, Journal of Operational Research Society, 65, pp 621-636.
  • Dehnokhalaji A, Korhonen P.J., Köksalan M., Nasrabadi N., Öztürk D.T., Wallenius J. (2014), Constructing a strict total order for alternatives characterized by multiple criteria: An extension, Naval Research Logistics, 61(2), pp 155-163.
  • Güden H., Süral H. (2014), Locating mobile facilities in railway construction management, Omega, 45, pp 71-79.
  • Lokman B., Köksalan M. (2014), Finding highly preferred points for multi-objective integer programs, IIE Transactions, 46, pp 1181–1195.