Edit Profile (opens in new tab) Lootsma, Freerk A. Compute Distance To: Compute Author ID: lootsma.freerk-a Published as: Lootsma, F. A.; Lootsma, Freerk A.; Lootsma, Freerk more...less External Links: Wikidata · GND · IdRef Documents Indexed: 51 Publications since 1966, including 2 Books 3 Contributions as Editor Biographic References: 1 Publication Co-Authors: 32 Co-Authors with 18 Joint Publications 1,220 Co-Co-Authors all top 5 Co-Authors 34 single-authored 2 Bots, Pieter W. G. 2 Schuijt, H. 2 van den Honert, Robin C. 1 Atherton, Elizabeth 1 Barzilai, Jonathan 1 Belton, Valerie 1 Boender, C. Guus E. 1 Claessens, M. N. A. J. 1 Dawes, Robyn M. 1 de Graan, J. G. 1 Edwards, Ward 1 French, Simon 1 Greenberg, Harvey Joel 1 Hämäläinen, Raimo P. 1 Hulshof, Josée A. M. 1 Larichev, Oleg I. 1 Lipovetsky, Stan 1 Mann, S. H. 1 Mitra, Gautam 1 Pardalos, Panos M. 1 Pearman, Alan 1 Pearson, J. D. 1 Ragsdell, K. M. 1 Rijckaert, Marcel J. 1 Simpson, Lisa 1 Triantaphyllou, Evangelos 1 van den Bosch, Paul P. J. 1 van Gennip, C. E. G. 1 Vlek, Charles A. J. 1 Vogt, F. J. 1 Wang, Shouyang 1 Zimmermann, Hans-Jürgen all top 5 Serials 11 Journal of Multi-Criteria Decision Analysis 10 European Journal of Operational Research 7 Philips Research Reports 3 Optimization 2 Applied Optimization 1 Fuzzy Sets and Systems 1 Journal of Optimization Theory and Applications 1 Mathematical Programming 1 RAIRO. Recherche Opérationnelle 1 Statistica Neerlandica 1 Journal of Information & Optimization Sciences 1 Parallel Computing all top 5 Fields 44 Operations research, mathematical programming (90-XX) 16 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 12 Numerical analysis (65-XX) 7 Calculus of variations and optimal control; optimization (49-XX) 5 Mathematical logic and foundations (03-XX) 2 General and overarching topics; collections (00-XX) 2 Approximations and expansions (41-XX) 1 History and biography (01-XX) 1 Convex and discrete geometry (52-XX) 1 Statistics (62-XX) 1 Systems theory; control (93-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 43 Publications have been cited 422 times in 329 Documents Cited by ▼ Year ▼ Multi-criteria decision analysis with fuzzy pairwise comparisons. Zbl 0663.62017Boender, C. G. E.; de Graan, J. G.; Lootsma, F. A. 72 1989 Scale sensitivity in the multiplicative AHP and SMART. Zbl 0838.90009Lootsma, F. A. 47 1993 Pairwise-comparison methods in multiple objective programming, with applications in a long-term energy-planning model. Zbl 0578.90040Kok, M.; Lootsma, F. A. 26 1985 Multi-criteria decision analysis via ratio and difference judgement. Zbl 0939.91029Lootsma, Freerk A. 25 1999 Power relations and group aggregation in the multiplicative AHP and SMART. Zbl 0889.90003Barzilai, J.; Lootsma, F. A. 18 1997 Fuzzy logic for planning and decision making. Zbl 0904.90173Lootsma, Freerk A. 18 1997 A survey of methods for solving constrained minimization problems via unconstrained minimization. Zbl 0268.90058Lootsma, F. A. 18 1972 A model for the relative importance of the criteria in the multiplicative AHP and SMART. Zbl 0947.90598Lootsma, F. A. 17 1996 State-of-the-art in parallel nonlinear optimization. Zbl 0633.65057Lootsma, F. A.; Ragsdell, K. M. 15 1988 Group preference aggregation in the multiplicative AHP. The model of the group decision process and Pareto optimality. Zbl 0924.90003Van den Honert, R. C.; Lootsma, F. A. 14 1997 Scheduling of power generation via large-scale nonlinear optimization. Zbl 0616.90064van den Bosch, P. P. J.; Lootsma, F. A. 13 1987 On the evaluation and application of different scales for quantifying pairwise comparisons in fuzzy sets. Zbl 0851.90002Triantaphyllou, E.; Lootsma, F. A.; Pardalos, P. M.; Mann, S. H. 12 1994 Performance evaluation of nonlinear optimization methods via multi- criteria decision analysis and via linear model analysis. Zbl 0547.90084Lootsma, F. A. 12 1982 Stochastic and fuzzy PERT. Zbl 0681.90039Lootsma, F. A. 12 1989 An indefinite-quadratic-programming model for a continuous-production problem. Zbl 0242.90020Lootsma, F. A.; Pearson, J. D. 12 1970 Hessian matrices of penalty functions for solving constrained- optimization problems. Zbl 0237.90048Lootsma, F. A. 11 1969 Multicriteria decision analysis in a decision tree. Zbl 0916.90005Lootsma, Freerk A. 6 1997 Rank preservation and propagation of fuzziness in pairwise-comparison methods for multi-criteria decision analysis. Zbl 0604.90079Lootsma, F. A. 6 1986 An elementary proof of Paelinck’s theorem on the convex hull of ranked criterion weights. Zbl 0727.90040Claessens, M. N. A. J.; Lootsma, F. A.; Vogt, F. J. 6 1991 Problem formulation for multi-criteria decision analysis: Report of a workshop. Zbl 0910.90186French, Simon; Simpson, Lisa; Atherton, Elizabeth; Belton, Valerie; Dawes, Robyn; Edwards, Ward; Hämäläinen, Raimo P.; Larichev, Oleg; Lootsma, Freerk; Pearman, Alan; Vlek, Charles 4 1998 A multi-criteria evaluation of diseases in a study for public-health planning. Zbl 0951.90565van Gennip, C. E. G.; Hulshof, J. A. M.; Lootsma, F. A. 4 1997 The assignment of scores for output-based research funding. Zbl 0919.90106Lootsma, Freerk A.; Bots, Pieter W. G. 4 1999 Generalized golden sections, repeated bisections and aesthetic pleasure. Zbl 0948.91016Lipovetsky, S.; Lootsma, F. A. 4 2000 Assessing the quality of negotiated proposals using the REMBRANDT system. Zbl 0979.90504Van den Honert, R. C.; Lootsma, F. A. 4 2000 Constrained optimization via parameter-free penalty functions. Zbl 0231.90047Lootsma, F. A. 4 1968 Logarithmic programming: A method of solving nonlinear-programming problems. Zbl 0308.90034Lootsma, F. A. 4 1967 The multiplicative AHP, SMART and ELECTRE in a common context. Zbl 0892.90114Lootsma, F. A.; Schuijt, H. 3 1997 Network planning with stochastic activity durations, an evaluation of PERT. Zbl 0143.43502Lootsma, F. A. 3 1966 Optimization with multiple objectives. Zbl 0687.90082Lootsma, F. A. 3 1989 Alternative optimization strategies for large-scale production-allocation problems. Zbl 0925.90206Lootsma, F. A. 3 1994 A hierarchical optimization model of resource allocation. Zbl 0819.90027Wang, Shouyang; Lootsma, F. A. 3 1994 Comparative performance evaluation, experimental design, and generation of test problems in non-linear optimization. Zbl 0583.90081Lootsma, F. A. 2 1985 Parallel Newton-Raphson methods for unconstrained minimization with asynchronous updates of the Hessian matrix or its inverse. Zbl 0762.90070Lootsma, F. A. 2 1991 Fairness and equity via concepts of multi-criteria decision analysis. Zbl 0915.90157Lootsma, F. A.; Ramanathan, R.; Schuijt, H. 2 1998 Modélisation du jugement humain dans l’analyse multicitère au moyen de comparaisons par paires. (Modelization of human decision making in multi-criterial analysis). Zbl 0624.90051Lootsma, F. A. 2 1987 Performance evaluation of nonlinear optimization methods via pairwise comparison and fuzzy numbers. Zbl 0586.90073Lootsma, F. A. 2 1985 Ranking of non-linear optimization codes according to efficiency and robustness. Zbl 0442.65053Lootsma, F. A. 2 1980 Constrained optimization via penalty functions. Zbl 0231.90046Lootsma, F. A. 2 1968 Pairwise comparisons in a multi-objective energy model. Zbl 0558.90050Kok, M.; Lootsma, F. A. 1 1985 Distributed multi-criteria decision making and the role of the participants in the process. Zbl 0960.90526Lootsma, Freerk A. 1 2000 Parallel nonlinear optimization. Zbl 0814.90110Lootsma, F. A. 1 1992 Extrapolation in logarithmic programming. Zbl 0231.90054Lootsma, F. A. 1 1968 Numerical methods for non-linear optimization. Conference sponsored by the Science Research Council, University of Dundee, Scotland, 1971. Zbl 0265.00015 1 1972 Generalized golden sections, repeated bisections and aesthetic pleasure. Zbl 0948.91016Lipovetsky, S.; Lootsma, F. A. 4 2000 Assessing the quality of negotiated proposals using the REMBRANDT system. Zbl 0979.90504Van den Honert, R. C.; Lootsma, F. A. 4 2000 Distributed multi-criteria decision making and the role of the participants in the process. Zbl 0960.90526Lootsma, Freerk A. 1 2000 Multi-criteria decision analysis via ratio and difference judgement. Zbl 0939.91029Lootsma, Freerk A. 25 1999 The assignment of scores for output-based research funding. Zbl 0919.90106Lootsma, Freerk A.; Bots, Pieter W. G. 4 1999 Problem formulation for multi-criteria decision analysis: Report of a workshop. Zbl 0910.90186French, Simon; Simpson, Lisa; Atherton, Elizabeth; Belton, Valerie; Dawes, Robyn; Edwards, Ward; Hämäläinen, Raimo P.; Larichev, Oleg; Lootsma, Freerk; Pearman, Alan; Vlek, Charles 4 1998 Fairness and equity via concepts of multi-criteria decision analysis. Zbl 0915.90157Lootsma, F. A.; Ramanathan, R.; Schuijt, H. 2 1998 Power relations and group aggregation in the multiplicative AHP and SMART. Zbl 0889.90003Barzilai, J.; Lootsma, F. A. 18 1997 Fuzzy logic for planning and decision making. Zbl 0904.90173Lootsma, Freerk A. 18 1997 Group preference aggregation in the multiplicative AHP. The model of the group decision process and Pareto optimality. Zbl 0924.90003Van den Honert, R. C.; Lootsma, F. A. 14 1997 Multicriteria decision analysis in a decision tree. Zbl 0916.90005Lootsma, Freerk A. 6 1997 A multi-criteria evaluation of diseases in a study for public-health planning. Zbl 0951.90565van Gennip, C. E. G.; Hulshof, J. A. M.; Lootsma, F. A. 4 1997 The multiplicative AHP, SMART and ELECTRE in a common context. Zbl 0892.90114Lootsma, F. A.; Schuijt, H. 3 1997 A model for the relative importance of the criteria in the multiplicative AHP and SMART. Zbl 0947.90598Lootsma, F. A. 17 1996 On the evaluation and application of different scales for quantifying pairwise comparisons in fuzzy sets. Zbl 0851.90002Triantaphyllou, E.; Lootsma, F. A.; Pardalos, P. M.; Mann, S. H. 12 1994 Alternative optimization strategies for large-scale production-allocation problems. Zbl 0925.90206Lootsma, F. A. 3 1994 A hierarchical optimization model of resource allocation. Zbl 0819.90027Wang, Shouyang; Lootsma, F. A. 3 1994 Scale sensitivity in the multiplicative AHP and SMART. Zbl 0838.90009Lootsma, F. A. 47 1993 Parallel nonlinear optimization. Zbl 0814.90110Lootsma, F. A. 1 1992 An elementary proof of Paelinck’s theorem on the convex hull of ranked criterion weights. Zbl 0727.90040Claessens, M. N. A. J.; Lootsma, F. A.; Vogt, F. J. 6 1991 Parallel Newton-Raphson methods for unconstrained minimization with asynchronous updates of the Hessian matrix or its inverse. Zbl 0762.90070Lootsma, F. A. 2 1991 Multi-criteria decision analysis with fuzzy pairwise comparisons. Zbl 0663.62017Boender, C. G. E.; de Graan, J. G.; Lootsma, F. A. 72 1989 Stochastic and fuzzy PERT. Zbl 0681.90039Lootsma, F. A. 12 1989 Optimization with multiple objectives. Zbl 0687.90082Lootsma, F. A. 3 1989 State-of-the-art in parallel nonlinear optimization. Zbl 0633.65057Lootsma, F. A.; Ragsdell, K. M. 15 1988 Scheduling of power generation via large-scale nonlinear optimization. Zbl 0616.90064van den Bosch, P. P. J.; Lootsma, F. A. 13 1987 Modélisation du jugement humain dans l’analyse multicitère au moyen de comparaisons par paires. (Modelization of human decision making in multi-criterial analysis). Zbl 0624.90051Lootsma, F. A. 2 1987 Rank preservation and propagation of fuzziness in pairwise-comparison methods for multi-criteria decision analysis. Zbl 0604.90079Lootsma, F. A. 6 1986 Pairwise-comparison methods in multiple objective programming, with applications in a long-term energy-planning model. Zbl 0578.90040Kok, M.; Lootsma, F. A. 26 1985 Comparative performance evaluation, experimental design, and generation of test problems in non-linear optimization. Zbl 0583.90081Lootsma, F. A. 2 1985 Performance evaluation of nonlinear optimization methods via pairwise comparison and fuzzy numbers. Zbl 0586.90073Lootsma, F. A. 2 1985 Pairwise comparisons in a multi-objective energy model. Zbl 0558.90050Kok, M.; Lootsma, F. A. 1 1985 Performance evaluation of nonlinear optimization methods via multi- criteria decision analysis and via linear model analysis. Zbl 0547.90084Lootsma, F. A. 12 1982 Ranking of non-linear optimization codes according to efficiency and robustness. Zbl 0442.65053Lootsma, F. A. 2 1980 A survey of methods for solving constrained minimization problems via unconstrained minimization. Zbl 0268.90058Lootsma, F. A. 18 1972 Numerical methods for non-linear optimization. Conference sponsored by the Science Research Council, University of Dundee, Scotland, 1971. Zbl 0265.00015 1 1972 An indefinite-quadratic-programming model for a continuous-production problem. Zbl 0242.90020Lootsma, F. A.; Pearson, J. D. 12 1970 Hessian matrices of penalty functions for solving constrained- optimization problems. Zbl 0237.90048Lootsma, F. A. 11 1969 Constrained optimization via parameter-free penalty functions. Zbl 0231.90047Lootsma, F. A. 4 1968 Constrained optimization via penalty functions. Zbl 0231.90046Lootsma, F. A. 2 1968 Extrapolation in logarithmic programming. Zbl 0231.90054Lootsma, F. A. 1 1968 Logarithmic programming: A method of solving nonlinear-programming problems. Zbl 0308.90034Lootsma, F. A. 4 1967 Network planning with stochastic activity durations, an evaluation of PERT. Zbl 0143.43502Lootsma, F. A. 3 1966 all cited Publications top 5 cited Publications all top 5 Cited by 492 Authors 13 Lootsma, Freerk A. 8 Wang, Yingming 6 Lipovetsky, Stan 6 Wang, Yu-Jie 5 Hämäläinen, Raimo P. 4 Basak, Indrani 4 Beynon, Malcolm James 4 Dubois, Didier 4 Hou, Fujun 4 Moreno-Jiménez, José María 4 Yeh, Chunghsing 3 Ayağ, Zeki 3 Benson, Harold P. 3 Bots, Pieter W. G. 3 Buckley, James J. 3 Carrizosa, Emilio 3 Chang, Yu-Hern 3 Chin, Kwai-Sang 3 Conde, Eduardo 3 Dede, Georgia 3 Dong, Yucheng 3 Fargier, Hélène 3 Hoàng Xuân Phù 3 Kamalakis, Thomas 3 Pho, Vo Minh 3 Römisch, Werner 3 Schultz, Rüdiger 3 Triantaphyllou, Evangelos 3 van den Honert, Robin C. 3 Wang, Hsiaofan 3 Wollner, Winnifried 3 Xu, Yinfeng 3 Yakhchali, Siamak Haji 2 Aguarón, Juan 2 Alfares, Hesham Kamal 2 Altuzarra, Alfredo 2 Arslan, Turan 2 Bandler, John W. 2 Bogetoft, Peter 2 Bryson, Noel A. 2 Burer, Samuel 2 Censor, Yair 2 Chanas, Stefan 2 Choo, Eng Ung 2 Dempe, Stephan 2 Duffuaa, Salih O. 2 Elhag, Taha M. S. 2 Fortemps, Philippe 2 Ghodsypour, Seyed Hassan 2 Golden, Bruce L. 2 Hulshof, Josée A. M. 2 Hurley, W. J. 2 Kangas, Annika S. 2 Kangas, Jyrki 2 Karamolegkos, George 2 Ke, Hua 2 Kwiesielewicz, Miroslaw 2 Lee, Hsuan-Shih 2 Leskinen, Pekka 2 Liu, Baoding 2 Mikhailov, Ludmil 2 Mouzakitis, Spiros 2 Ngwenyama, Ojelanki K. 2 Ntanos, Emmanouil 2 Olson, David L. 2 Psarras, John E. 2 Ruan, Da 2 Salo, Ahti A. 2 Salvador, Manuel 2 Schittkowski, Klaus 2 Siraj, Sajid 2 Sphicopoulos, Thomas 2 Stam, Antonie 2 Steuer, Ralph E. 2 Tishler, Asher 2 van den Bosch, Paul P. J. 2 Vasant, Pandian M. 2 Wang, Juite 2 Wasil, Edward A. 2 Wedley, William C. 2 Weistroffer, H. Roland 2 Wright, Margaret H. 2 Xu, Dong-Ling 2 Xu, Ruoning 2 Yang, Jian-Bo 2 Yannou, Bernard 2 Yu, Shui 2 Zieliński, Paweł 1 Agrell, Per J. 1 Aharoni, Ron 1 Ahlatcioglu, Beyza 1 Ahn, Byeong Seok 1 Akbarian, Dariush 1 Aksoy, Yasemin 1 Alam, S. S. 1 Aleksić, Aleksandar 1 Alonso, José-Antonio 1 Altinoz, O. Tolga 1 Amenta, Pietro 1 Amman, Hans M. ...and 392 more Authors all top 5 Cited in 73 Serials 103 European Journal of Operational Research 24 Journal of Optimization Theory and Applications 23 Fuzzy Sets and Systems 13 Computers & Operations Research 11 Information Sciences 11 Mathematical Programming 10 Journal of Multi-Criteria Decision Analysis 6 Computers & Mathematics with Applications 5 International Journal of Production Research 5 Journal of Global Optimization 5 Applied Mathematical Modelling 5 Mathematical Programming. Series A. Series B 4 International Journal of General Systems 4 Applied Mathematics and Computation 4 International Journal of Approximate Reasoning 4 Mathematical and Computer Modelling 4 Annals of Operations Research 4 Soft Computing 4 Fuzzy Optimization and Decision Making 3 Computer Methods in Applied Mechanics and Engineering 3 International Journal of Systems Science 3 Computing 3 Asia-Pacific Journal of Operational Research 3 CEJOR. Central European Journal of Operations Research 3 International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 2 Automatica 2 Operations Research Letters 2 Optimization 2 International Journal of Computer Mathematics 2 ZOR. Zeitschrift für Operations Research 2 Mathematical Problems in Engineering 2 Mathematical Methods of Operations Research 2 Structural and Multidisciplinary Optimization 2 Mathematical Programming Computation 1 International Journal of Mathematical Education in Science and Technology 1 Journal of the Franklin Institute 1 Physics Letters. A 1 Mathematics of Computation 1 Kybernetes 1 Mathematical Programming Study 1 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 1 Numerische Mathematik 1 Journal of Information & Optimization Sciences 1 Insurance Mathematics & Economics 1 Applied Numerical Mathematics 1 Journal of Economic Dynamics & Control 1 Neural Networks 1 Automation and Remote Control 1 Communications in Statistics. Simulation and Computation 1 Communications in Statistics. Theory and Methods 1 Linear Algebra and its Applications 1 Bulletin of the American Mathematical Society. New Series 1 Computational Optimization and Applications 1 Journal of Computer and Systems Sciences International 1 Computational and Applied Mathematics 1 Filomat 1 Annals of Mathematics and Artificial Intelligence 1 Journal of Heuristics 1 Journal of Discrete Mathematical Sciences & Cryptography 1 RAIRO. Operations Research 1 Journal of Systems Science and Complexity 1 Decisions in Economics and Finance 1 OR Spectrum 1 Journal of Intelligent and Fuzzy Systems 1 New Mathematics and Natural Computation 1 Advances in Data Analysis and Classification. ADAC 1 Optimization Letters 1 International Journal of Information Technology & Decision Making 1 Pesquisa Operacional 1 Operational Research. An International Journal 1 Symmetry 1 Croatian Operational Research Review (CRORR) 1 Journal of Optimization all top 5 Cited in 23 Fields 260 Operations research, mathematical programming (90-XX) 96 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 48 Numerical analysis (65-XX) 21 Mathematical logic and foundations (03-XX) 19 Calculus of variations and optimal control; optimization (49-XX) 19 Computer science (68-XX) 15 Statistics (62-XX) 10 Systems theory; control (93-XX) 5 Biology and other natural sciences (92-XX) 4 Information and communication theory, circuits (94-XX) 3 Mechanics of deformable solids (74-XX) 2 General and overarching topics; collections (00-XX) 2 Approximations and expansions (41-XX) 2 Operator theory (47-XX) 1 History and biography (01-XX) 1 Combinatorics (05-XX) 1 Linear and multilinear algebra; matrix theory (15-XX) 1 Associative rings and algebras (16-XX) 1 Ordinary differential equations (34-XX) 1 Convex and discrete geometry (52-XX) 1 Probability theory and stochastic processes (60-XX) 1 Geophysics (86-XX) 1 Mathematics education (97-XX) Citations by Year Wikidata Timeline The data are displayed as stored in Wikidata under a Creative Commons CC0 License. Updates and corrections should be made in Wikidata.