0 János Fülöp


János Fülöp
Ph. D., senior research fellow, Head of the Research Group
Education:
  • mathematics, Eötvös Loránd University, Budapest, 1974-79
  • doctor of university, Eötvös Loránd University, Budapest, 1984
  • Ph.D., Eötvös Loránd University, Budapest, 1995
Research interests:
  • global optimization
  • nonconvex programming problems with special structure
  • decision theory
Awards:
  • Gyula Farkas Prize, János Bolyai Mathematical Society, 1989 
Professional activities:
  • production planning
  • modelling the optimal exploitation of natural resources
  • development of a hospital dietetic and menu planning system
  • electricity planning
  • development of a methodology for collecting and processing data on the state of the environment
  • logistics optimization
  • models of game theory for the economical effects of climate change
  • decision making and environmental modelling
Teaching activities:
  • associate professor, John von Neumann Faculty of Informatics, Óbuda University, Budapest
Publications:
  1. Fülöp, J.: Eredeti csúcspont keresése és alkalmazása konkáv függvény lineáris feltételek melletti minimalizálásakor. Alkalmazott Matematikai Lapok. 9 : 51-72. (1983)
  2. Fülöp, J.: Minimizing a separable piecewise linear continuous function subject to convex constraints of the same type. Zeitschrift für Angewandte Mathematik und Physik. 65: 310-311. (1985)
  3. Fülöp, J.: A finite procedure to generate feasible point for the extreme point mathematical programming problem. European Journal of Operational Research. 35 (2): 228-241. (1988)
  4. Fülöp, J.: A felületi diszjunktív programozási feladatról. Alkalmazott Matematikai Lapok. 13 (1-2): 9-15. (1987-88)
  5. Fülöp, J.: The transformation of the linear disjunctive programming problem into a facial problem. Zeitschrift für Angewandte Mathematik und Physik. 68: 440-441. (1988)
  6. Fülöp, J.: Véges metszősík módszer fordított konvex feltétellel kiegészített lineáris programozási feladatok megoldására. Alkalmazott Matematikai Lapok. 14 (1-2): 119-142. (1989)
  7. Fülöp, J.: Egy speciális nemkonvex programozási feladatról. Alkalmazott Matematikai Lapok. 14: 389-404. (1989)
  8. Fülöp, J.: A finite cutting plane method for solving linear programs with an additional reverse convex constraint. European Journal of Operational Research. 44 (3): 395-409. (1990)
  9. Fülöp, J.: A finite cutting plane method for the facial disjunctive programming problem. ZOR - Methods and Models of Operations Research. 35 (1): 1-14. (1991)
  10. Fülöp, J.: A finite algorithm for solving the generalized lattice point problem. European Journal of Operational Research. 51 (2): 270-281. (1991)
  11. Fülöp, J.: An outer approximation method for solving canonical d.c. problems. In: Gritzmann, P., Hettich, R., Horst, R., and Sachs, E. (eds.), Operations Research '91. (Physica-Verlag, Heidelberg, 1992), pp. 95-98.
  12. Dörfner, P. - Fülöp, J. - Hoffer, J.: Production costing simulation with limited fuel resources. In: Kall, P. (ed.) System Modelling and Optimization. Proceedings of the 15th IFIP Conference, pp. 777-786, Springer, Berlin, 1992.
  13. Fülöp, J. - Hoffer, J. - Dörfner, P.: LDC Module: A load data based tool in electricity planning. International Journal of Electrical Power and Energy Systems. 14 (6): 370-374. (1992)
  14. Fülöp, J. - Prill, M.: On the minimax approximation in the class of the univariate piecewise constant functions. Operations Research Letters. 12 (5): 307-312. (1992)
  15. Fülöp, J.: A semi-infinite programming method for approximating load duration curves by polynomials. Computing. 40: 201-212. (1992)
  16. Fülöp, J.: On a special class of linear programs with an additional reverse convex constraint. In: Maros, I. (ed.) APMOD93. Symposium on Applied Mathematical Programming and Modeling, Akaprint, Budapest, 1993, pp. 201-209. 
  17. Fülöp, J.: On the equivalence between a linear bilevel programming problem and linear optimization over the efficient set. Working Paper 93-1, Laboratory of Operations Research and Decision Systems, Computer and Automation Institute, Hungarian Academy of Sciences, Budapest, February 1993, 6 p. http://www.oplab.sztaki.hu/WP_1993_1_Fulop.pdf
  18. Fülöp, J.: A cutting plane method for linear optimization over the efficient set. In: Komlósi, S., Rapcsák, T., Schaible, S. (eds.), Generalized Convexity. Lecture Notes in Economics and Mathematical Systems 405, Springer, 1994, pp. 374-385.
  19. Fülöp, J.: A deletion-by-infeasibility rule for d.c.-constrained global optimization. Journal of Optimization Theory and Applications. 84 (2): 443-455. (1995)
  20. Fülöp, J.: Lagrangian duality of concave minimization subject to linear constraints and an additional facial reverse convex constraint. Journal of Optimization Theory and Applications. 93: 617-641. (1996)
  21. Fülöp, J. - Imreh, B. - Friedler, F.: On the reformulation of some classes of PNS-problems as set covering problems. Acta Cybernetica. 13: 329-337. (1998) 
  22. Fülöp, J. - Muu, L.D.: Branch-and-bound variant of an outcome-based algorithm for optimizing over the efficient set of a bicriteria linear programming problem. Journal of Optimization Theory and Applications. 105: 37-54. (2000) 
  23. Fülöp, J. - Prill, M.: Linearized segmentation method for probabilistic production cost simulation. International Journal of Electrical Power and Energy Systems. 22: 471-481. (2000) 
  24. Imreh, B. - Fülöp, J. - Friedler, F.: A note on the equivalence of the set covering and Process Network Synthesis problems. Acta Cybernetica. 14: 497-501. (2000) 
  25. Temesi, J. - Fülöp, J., Evaluation of Hungarian industrial parks with DEA, Presented at INFORMS/KORMS International Meeting, Seoul, South Korea, 6/19 to 6/21. (2000)
  26. Fülöp, J. - Temesi, J., A data envelopment analysis (DEA) alkalmazása ipari parkok hatékonyságának vizsgálatára (Data envelopment analysis for evaluating the efficiency of industrial parks in Hungary (in Hungarian)), Szigma. XXXII(3-4): 85-110 (2001)
  27. Fülöp, J., Roth, D. and Schweik, C., Decision Making in the Context of Eco-informatics. In: Cushing, J. and Wilson, T. (eds.), Eco-Informatics for Decision Makers: Advancing a Research Agenda, Report of an NSF- and USGS/NBII-sponsored Workshop on Eco-Informatics for Resource Management Decision Makers held at The Evergreen State College, Olympia, Washington, December 13-15, 2004, pp. 21-26. http://www.evergreen.edu/bdei/documents/finalReport.pdf
  28. Fülöp, J.: Introduction to Decision Making Methods. Working Paper 05-6, Laboratory of Operations Research and Decision Systems, Computer and Automation Institute, Hungarian Academy of Sciences, Budapest, November 2005, 15 p. http://academic.evergreen.edu/projects/bdei/documents/decisionmakingmethods.pdf
  29. Forgó, F. - Fülöp, J. - Prill, M.: Game theoretic models for climate change negotiations. European Journal of Operational Research. 160 (2005) 252-267
  30. Cushing, J.B., Wilson, T. et al. including J. Fülöp, Eco-informatics and natural resource management. ACM International Conference Proceeding Series; Vol. 89 (2005). Proceedings of the 2005 national conference on Digital government research, Atlanta, Georgia, 211-212.
  31. Cushing, J.B., Wilson, T. et al. including Fülöp, J., Eco-Informatics for Decision makers: Advancing a Research Agenda. In L. Raschid and B. Ludaescher (eds.), Lecture Notes in Computer Science Subseries: Lecture Notes in Bioinformatics, Springer (2005), which is the Proceedings of the Second International Workshop on Data Integration in the Life Sciences (DILS-2005), San Diego, CA), 325-334.
  32. Fülöp, J.: A method for approximating pairwise comparison matrices by consistent matrices. Journal of Global Optimization.42 (2008 ) 423-442
  33. Forgó, F. - Fülöp, J.: On the implementation of the L-Nash bargaining solution in two-person bargaining games. Central European Journal of Operations Research 16(2008) 359-377
  34. Fülöp, J.: A D.C. Programming Approach for Optimization with Orthonormality Constraints. In: C.Q.Ma, L.A.Yu, D.B.Zhang and Z.B.Zhou (eds.) Global Optimization: Theory, Methods & Applications I, Lecture Notes in Decision Science; Vol.12, (Global-Link Publisher Hong Kong, 2009), pp. 930-935.
  35. Bozóki, S. - Fülöp, J. - Rónyai, L.: Incomplete Pairwise Comparison Matrices in Multi-Attribute Decision Making, In: Proceedings of the IEEE International Conference on Industrial Engineering and Engineering Management (IEEM), Hong Kong, 8-11 Dec 2009, pp. 2256-2260, (2009)
  36. Bozóki, S. - Fülöp, J. - Rónyai, L.: On optimal completions of incomplete pairwise comparison matrices. Mathematical and Computer Modelling 52 (2010) 318-333
  37. Fülöp, J. - Koczkodaj, W.W. - Szarek, S.J.: A different perspective on a scale for pairwise comparisons. Transactions on Computational Collective Intelligence, Lecture Notes in Computer Science 6220 (2010) 71-84
  38. Bozóki, S. - Fülöp, J. - Poesz, A.: On pairwise comparison matrices that can be made consistent by the modification of a few elements. Central European Journal of Operations Research 19 (2011) 157-175
  39. Bozóki, S. - Fülöp, J. - Koczkodaj, W.W.: An LP-based inconsistency monitoring of pairwise comparison matrices. Mathematical and Computer Modelling 54 (2011) 789-793
  40. Kemény, Zs. - Ilie-Zudor, E. - Fülöp, J. - Ekárt, A. - Buckingham, C. - Welch, P.G.: Multiple participant hub-and-spoke logistics networks: challenges, solutions and limits. In: Proc. of the 13th International Conference on Modern Information Technology in the Innovation Processes of Industrial Enterprises MITIP2011, Trondheim, Norway, June 22–24 2011, pp. 20–29. http://http://www.advance-logistics.eu/publications/Logistics_mitip2011.pdf
  41. Fülöp, J. - Koczkodaj, W.W. - Szarek, S.J.: On some convexity properties of the Least Squares Method for pairwise comparisons matrices without the reciprocity condition. Journal of Global Optimization 54 (2012) 689–706
  42. Fülöp, J. - Markovits-Somogyi, R.: Ranking decision making units based on DEA-like nonreciprocal pairwise comparisons. Acta Polytechnica Hungarica 9(2) (2012) 77-94
  43. Bozóki, S. - Fülöp, J. - Poesz, A.: Elfogadható inkonzisztenciájú páros összehasonlítás mátrixokkal kapcsolatos konvexitási tulajdonságok és azok alkalmazásai, in: Egyensúly és optimum: Tanulmányok Forgó Ferenc 70. születésnapjára, Aula Kiadó, 2012, pp. 169-184.
  44. Ergu, D. - Kou, G. - Peng, Y. - Fülöp, J. - Shi, Y.: Further discussions on induced bias matrix model for the pair-wise comparison matrix. Journal of Optimization Theory and Applications. 161 (2014) 980-993
  45. Bozóki, S. - Fülöp, J. - Poesz, A.: On reducing inconsistency of pairwise comparison matrices below an acceptance threshold. Central European Journal of Operations Research 23(4) (2015) 849-866
  46. Bozóki, S. - Fülöp, J. Páros összehasonlítás mátrixokból számolt súlyvektorok hatékonysága. SZIGMA 48(1-2) (2017) 3-17.
  47. Bozóki, S. - Fülöp, J.: Efficient weight vectors from pairwise comparison matrices. European Journal of Operational Research 264(2) (2018) 419-427, http://arxiv.org/abs/1602.03311
  48. Börcsök, E. - Gerse, Á. - Fülőp, J.: Applying Multiobjective Optimization for the Heat Supply in the Residential Sector in Budapest. Proceedings of SACI 2018, IEEE 12th International Symposium on Applied Computational Intelligence and Informatics, May 17-19, Timişoara, Romania, 213-217.
  49. Börcsök, E. - Gerse, Á. - Fülőp, J.: Possibility of nuclear cogeneration development in the region of Paks. Acta Polytechnica Hungarica 15(6) (2018) 63-78
  50. Anholcer, M. - Fülöp, J.: Deriving Priorities from Inconsistent PCM using the Network Algorithms. Annals of Operations Research 274 (2019) 57-74
  51. Börcsök, E. - Gerse, Á. - Fülőp, J.: Optimizing the use of renewable energy sources in the energy mix of Hungary. Proceedings of SAMI 2019, IEEE 17th World Symposium on Applied Machine Intelligence and Informatics, January 24-26, Herl'any, Slovakia, 222-227.
  52. Ábele-Nagy, K. - Fülöp, J.: Pozitív mátrixok domináns sajátvektorának számítása a ciklikus koordináták módszerével. SZIGMA 51(2) (2020) 115-130.
  53. Börcsök, E. - Ferencz, Z. - Groma, V. - Gerse, Á. - Fülöp, J. - Bozóki, S. - Osán, J. - Török, S. - Horváth, Á.: Energy Supply Preferences as Multicriteria Decision Problems: Developing a System of Criteria from Survey Data. Energies, 13(15) (2020) 3767-3787.
Other professional activities:
  • member of the Editorial Board of Journal of Global Optimization, Optimization Letters, SN Operations Research Forum, International Abstracts in Operations Research (till 2018), and Szigma
  • member of the Committee of Operations Research of the Hungarian Academy of Sciences
  • member of the Hungarian Operations Research Society

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