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Prof.Dr. AHMET COŞAR (RETIRED)
FACULTY OF ENGINEERING
PublicationsResearchMembership & Awards
E-mail :  
Url :  http://www.ceng.metu.edu.tr/~cosar
Phone :  +90312210 5566
Fax :  +903122105544
Address :
 

Education

  Bachelor's, Middle East Technical University, Computer Eng.
  Master's, Bilkent, Computer Science
  Master's, University of Minnesota, Minneapolis, Computer Science
  Doctorate, University of Minnesota, Minneapolis, Computer Science

Publications (INTERNATIONAL)

Journal Papers

  A.1 A. Coşar and B. Özgüç, A Simple Animation Package. "Comput.&Graphics", 12, (1988), p.591-594.
  A.2 A. Coşar B. Özgüç, Basitleştirilmiş bir Animasyon Yazılımı. "5. Türkiye Bilgisayar Kongresi, İstanbul, Türkiye", (1988).
  A.3 C. Aykanat A. Coşar F.Özgüner, Partitioning Logic Circuits on a Linear Array of Processors. "Proc.of the Fourth Int. Symposium on Comp. and Infor.Sciences (ISCIS)", 1, (1989), p.133-142.
  A.4 A. Coşar and B. Özgüç, AText, Image, Graphics Editor. "Comput.&Graphics", 15, (1991), p.57-66.
  A.5 A. Coşar J. Srivastava S. Shekhar, On the Multiple Pattern Multiple Object(MPMO) Problem. "Proc.of Conference on Management of Data (COMAD)", (1991).
  A.6 E-P.Lim A. Coşar J.Srivastava, An Extensive Search for Optimal Multiple Query Plans. "Proc.of Conference on Management of Data (COMAD), India", (1992).
  A.7 A.Cosar E-P.Lim J.Srivastava, Multiple Query Optimization Using Depth-First Branch-and-Bound and Dynamic Query. "Proc.of Conf. on Information anf Knowledge Management (CIKM-93)", (1993).
  A.8 A.Cosar E-P.Lim J.Srivastava, Multiple Query Optimization Using Depth-First Branch-and-Bound and Dynamic Query Ordering. "Journal of Database Management", 6, (1995), p.14-19.
  A.9 Polat, F., Coşar, A. and Alhajj, R., The Semantic Information-based Alternative Plan Generation for Multiple Query Optimization. "Information Sciences", 137, (2001).
  A.10 Yusuf Tambag, Ahmet Cosar, Managing Business Lifecycle Using ebIOP. "Software Practice and Experience", 33, (2003), p.1217-1227.
  A.11 Cicekli, N., Cosar, A., Dogac A., Polat, F., Senkul, P., Toroslu, H., Yazici,, Data Management Research at the Middle East Technical University. "ACM Sigmod Record", 34, (2005).
  A.12 M.A. Bayir, I.H. Toroslu, A. Cosar, Genetic Algorithm for the Multiple-Query Optimization Problem. "Systems, Man, and Cybernetics, Part C: Applications and Reviews, IEEE Transactions on", 37, (2007), p.147-153.
  A.13 Murat Ali Bayir, Murat Demirbas, Ahmet Cosar, A Web-Based Personalized Mobility Service for Smartphone Applications (doi:10.1093/comjnl/bxq027). "The Computer Journal", (2010), p.1-15.
  A.14 Ender Sevinç, Ahmet Coşar, An Evolutionary Genetic Algorithm for Optimization of Distributed Database Queries (doi:10.1093/comjnl/bxp130). "The Computer Journal", (2010), p.1-9.
  A.15 M.A. Bayir, M. Demirbas, A. Cosar, A Web-Based Personalized Mobility Service for Smartphone Applications. "The Computer Journal", 54, (2011), p.800-814.
  A.16 Ender Sevinc, Ahmet Cosar, An Evolutionary Genetic Algorithm for Optimization of Distributed Database Queries. "The Computer Journal", 54, (2011), p.717-725.
  A.17 U. Tosun, T. Dokeroglu, A. Cosar, A Robust Island Parallel Genetic Algorithm for the Quadratic Assignment Problem. "Int. J. of Production Research", 51, (2013), p.4117-4133.
  A.18 Tansel Dokeroglu, Ahmet Cosar, Optimization of one-dimensional Bin Packing Problem with island parallel grouping genetic algorithms. "Computers & Industrial Engineering", 75, (2014), p.176-186.
  A.19 Dokeroglu T., Ozal S., Bayir M.A., Cinar M.S., Cosar A., Improving the performance of Hadoop Hive by sharing scan and computation tasks. "Journal of Cloud Computing: Advances, Systems and Applications", 3, (2014), p.1-11.
  A.20 Tansel Dokeroglu ; Murat Ali Bayir ; Ahmet Cosar, Robust heuristic algorithms for exploiting the common tasks ofrelational cloud database queries. "Applied Soft Computing", 20, (2015), p.72-82.
  A.21 Muhammed Beyaz ; Tansel Dokeroglu ; Ahmet Cosar, Robust hyper-heuristic algorithms for the offlineoriented/non-oriented 2D bin packing problems. "Applied Soft Computing", 36, (2015), p.236–245.
  A.22 Bara’a A. Attea ; Enan A. Khalil ; Ahmet Cosar, Multi-objective evolutionary routing protocol for efficient coverage in mobile sensor networks. "Soft Computing", 19, (2015), p.2983–2995.
  A.23 Tansel Dökeroglu, Ahmet Cosar, A novel multistart hyper-heuristic algorithm on the grid for the quadratic assignment problem. "Engineering Applications of Artificial Intelligence", 52, (2016), p.10-25.
  A.24 Yagmur Aksan, Tansel Dökeroglu, Ahmet Cosar, A stagnation-aware cooperative parallel breakout local search algorithm for the quadratic assignment problem. "Computers & Industrial Engineering 103: (2017)", 103, (2017), p.105-115.
  A.25 Ayça Deniz, Hakan Ezgi Kiziloz, Tansel Dökeroglu, Ahmet Cosar, Robust multiobjective evolutionary feature subset selection algorithm for binary classification using machine learning techniques. "Neurocomputing", 241, (2017), p.128-146.
 

Conference Papers

  A.1 Polat, F., Günay, M. and Coşar, A., Alternative Plan Generation Methods for Multiple Query Optimization. "Int. Conference on Computer and Information Systems", (1998), p.246-253.
  A.2 Yusuf Tambag, Ahmet Cosar, ebIOP-An ebXML Compliant B2B Interoperability Platform. "Lecture Notes in Computer Science", 2738/2003, (2003), p.155-164.
  A.3 Murat Ali Bayir, Ismail Hakki Toroslu, Ahmet Cosar, Guven Fidan, Smart Miner: a new framework for mining large scale web usage data. "WWW 2009", (2009), p.161-170.
  A.4 M.A. Bayir, M. Demirbaş, A. Coşar, Track me! a web based location tracking and analysis system for smart phone users. "ISCIS 2009", (2009), p.117-122.
  A.5 Ender Sevinç, Ahmet Coşar, An evolutionary genetic algorithm for optimization of distributed database queries. "ISCIS 2009", (2009), p.147-152.
  A.6 Ender Sevinc, Ahmet Coşar, Distributed Database Design with Genetic Algorithm and Relation Clustering Heuristic. "ISCIS 2010", (2010).
  A.7 Sercan Gok, Adnan Yazici, Ahmet Cosar and Roy George, Fuzzy Decision Fusion for Single Target Classification in Wireless Sensor Networks. "IEEE WCCI", (2010).
  A.8 T. Dokeroglu, A. Cosar, Dynamic Programming with Ant Colony Optimization Metaheuristic for Optimization of Distributed Database Queries. "ISCIS 2011", (2011), p.107-113.
  A.9 Umut Tosun, Tansel Dokeroglu, and Ahmet Cosar, A New Parallel Genetic Algorithm for Reducing the Bullwhip Effect in an Automotive Supply Chain. "IFAC MIM 2013", (2013), p.70-74.
  A.10 Dokeroglu, Tansel; Tosun, Umut; Cosar, Ahmet, Evaluating the Performance of Recombination Operators with Island Parallel Genetic Algorithms. "IFAC MIM 2013", (2013), p.748-753.
  A.11 Tansel Dokeroglu, Murat Ali Bayir, Ahmet Cosar, Integer Linear Programming Solution Model for the Multiple Query Optimization Problem. "ISCIS 2014, LNEE, ISBN 978-3-319-09464-9", (2014), p.51-60.
  A.12 Muhammet Beyaz, Tansel Dokeroglu, Ahmet Cosar, Hybrid heuristic algorithms for the multi-objective load balancing of 2D bin packing problems. "ISCIS 2015", (2015), p.209-222.
  A.13 Seyyit Alper Sert, Adnan Yazici, Ahmet Cosar, Impacts of routing attacks on Surveillance Wireless Sensor Networks. " IWCMC 2015", (2015), p.910-915.
  A.14 Ismail Turk, Ahmet Cosar, Having 4G, enabling cloud based execution for NFC based financial transactions. "Innovations in Information Technology", (2015), p.63 - 67.
  A.15 Tansel Dökeroglu, M. Serkan Çinar, S. Alper Sert, Ahmet Cosar, Adnan Yazici, Improving Hadoop Hive Query Response Times Through Efficient Virtual Resource Allocation. "FQAS 2015", (2015), p.215-225.
  A.16 Ismail Turk, Ahmet Cosar, Internet Connection Sharing Through NFC for Connection Loss Problem in Internet-of-Things Devices. " NEW2AN 2015", (2015), p.329-342.
  A.17 Ismail Turk, Ahmet Cosar, An open, NFC enabler independent Mobile payment and identification method: NFC feature box. "World of Wireless, Mobile and Multimedia Networks (WoWMoM)", (2016), p.1-3.
  A.18 Sukru Ozer Ozcan, Tansel Dökeroglu, Ahmet Cosar, Adnan Yazici, A Novel Grouping Genetic Algorithm for the One-Dimensional Bin Packing Problem on GPU. "ISCIS", (2016), p.52-60.
  A.19 Aygun, Betul; Arici, Nursal; Cosar, Ahmet, Optimal Resource Allocation of Dynamic Video Streaming Applications in a Public Cloud Environment. "INTERNATIONAL CONFERENCE ON COMPUTER SCIENCE AND ENGINEERING (UBMK)", (2017), p.445-450.
  A.20 Seyyit Alper Sert, Adnan Yazici, Ahmet Cosar, Effects of selective forwarding attacks on wireless sensor network efficiency. "25th Signal Processing and Communications Applications Conference (SIU)", (2017).

Publications (NATIONAL)

 

Book and Chapter in a Book

  A.1 Coşar, A., Alternative Plan Generation for Multiple Query Optimization. "Current Trends in Data Management Technology", (2000), s.113-129.
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