Publications

Books, Book Chapters, Editorials

• Keijzer, M., G. Antoniol, C.B. Congdon, K. Deb, B. Doerr, N. Hansen, J.H. Holmes, G.S. Hornby, D. Howard, J. Kennedy, S. Kumar, F.G. Lobo, J.F. Miller, J. Moore, F. Neumann, M. Pelikan, J. Pollack, K. Sastry, K. Stanley, A. Stoica, E-G. Talbi, I. Wegener (eds, 2008). GECCO Genetic and Evolutionary Computation Conference, Proceedings, ACM, 2008.
• Hansen, N. (2006). The CMA Evolution Strategy: A Comparing Review. In J.A. Lozano, P. Larrañga, I. Inza and E. Bengoetxea (eds.). Towards a new evolutionary computation. Advances in estimation of distribution algorithms. pp. 75-102, Springer; (abstract and erratum, paper in pdf 1.5MB, bibtex).
• Hansen, N. (1998). Verallgemeinerte individuelle Schrittweitenregelung in der Evolutionsstrategie. Eine Untersuchung zur entstochastisierten, koordinatensystemunabhängigen Adaptation der Mutationsverteilung. PhD thesis, D83, ISBN 3-933346-29-0. Berlin: Mensch und Buch Verlag; (abstract, pdf 890kB, bibtex).
• Schöneburg, E., N. Hansen and A. Gawelczyk (1992). Neuronale Netzwerke. Einführung, Überblick und Anwendungsmöglichkeiten. Haar: Markt&Technik Verlag. Dritte, erweiterte Auflage.

Journals

• Suttorp, T., N. Hansen and C. Igel (2009), Efficient Covariance Matrix Update for Variable Metric Evolution Strategies, Machine Learning, accepted for publication, (abstract, paper in pdf, bibtex).
• Hansen, N., A.S.P. Niederberger, L. Guzzella and P. Koumoutsakos (2009). A Method for Handling Uncertainty in Evolutionary Optimization with an Application to Feedback Control of Combustion. To appear in IEEE Transactions on Evolutionary Computation, (abstract, paper draft in pdf 2.3MB, bibtex, noise measurement source code as given in the appendix).
• Igel, C., N. Hansen and S. Roth (2007). Covariance Matrix Adaptation for Multi-objective Optimization. Evolutionary Computation, 15(1), pp.1-28; (abstract, paper in pdf, bibtex).
• Glass, C.W., A.R. Oganov and N. Hansen (2006). USPEX - evolutionary crystal structure prediction. Computer Physics Communications, 175, pp. 713-720; (abstract, paper in pdf, bibtex).
• Hansen, N. (2006). An Analysis of Mutative σ-Self-Adaptation on Linear Fitness Functions. Evolutionary Computation, 14(3), pp. 255-275; (abstract, paper in pdf 1.4MB, bibtex).
• Kern, S., S.D. Müller, N. Hansen, D. Büche, J. Ocenasek and P. Koumoutsakos (2004). Learning Probability Distributions in Continuous Evolutionary Algorithms - A Comparative Review. Natural Computing, 3(1), pp.77-112; (abstract & errata, corrected paper draft in pdf 830kB, bibtex).
• Hansen, N., S.D. Müller and P. Koumoutsakos (2003). Reducing the Time Complexity of the Derandomized Evolution Strategy with Covariance Matrix Adaptation (CMA-ES). Evolutionary Computation, 11(1), pp. 1-18; (abstract & errata, paper in pdf, bibtex).
• Hansen, N. and A. Ostermeier (2001). Completely Derandomized Self-Adaptation in Evolution Strategies. Evolutionary Computation, 9(2), pp. 159-195; (abstract & errata, paper in pdf 1.1MB, paper in gzipped ps, bibtex).
• Ostermeier, A., A. Gawelczyk and N. Hansen (1994). A derandomized approach to self-adaptation of evolution strategies. Evolutionary Computation 2(4), pp. 369-380;  (abstract, paper in pdf, paper in gzipped ps, bibtex).

Peer-Reviewed Conference Proceedings

• Hansen, N. (2008). Adaptive Encoding: How to Render Search Coordinate System Invariant. In Rudolph et al. (eds.) Parallel Problem Solving from Nature, PPSN X, Proceedings, pp. 205-214, Springer (abstract and paper, bibtex, encoding update source code).
• Ros, R. and N. Hansen (2008). A Simple Modification in CMA-ES Achieving Linear Time and Space Complexity. In Rudolph et al. (eds.) Parallel Problem Solving from Nature, PPSN X, Proceedings, pp. 296-305, Springer (abstract and paper).
• Hansen, N., A.S.P. Niederberger, L. Guzzella and P. Koumoutsakos (2008). Evolutionary Optimization of Feedback Controllers for Thermoacoustic Instabilities. J.F.Morrison, D.M.Birch, and P.Lavoie (eds.) IUTAM Symposium on Flow Control and MEMS, Proceedings of the IUTAM Symposium held at the Royal Geographical Society, 19-22 September 06, Springer, 2008 (abstract, paper draft in pdf).
• Kern S., Hansen N. and Koumoutsakos P. (2007). Optimization of Simulated Fish Swimming using Efficient Local Quadratic Meta-models and Evolution Strategies. Eurogen 2007, Jyväskylä, Finland, June 2007. (abstract, paper in pdf 1.5MB)
• Igel, C., T. Suttorp and N. Hansen (2007). Steady-state selection and efficient covariance matrix update in the multi-objective CMA-ES. In S. Obayashi et al. (eds.), Proceedings of the Fourth International Conference on Evolutionary Multi-Criterion Optimization (EMO 2007), pp.171-185, Springer (paper in pdf).
• Hansen, N., F. Gemperle, A. Auger and P. Koumoutsakos (2006). When Do Heavy-Tail Distributions Help? In Ninth International Conference on Parallel Problem Solving from Nature PPSN IX, Proceedings, pp.62-71, Berlin: Springer; (abstract, paper draft pdf 5.7MB, bibtex).
• Kern, S., N. Hansen and P. Koumoutsakos (2006). Local Meta-Models for Optimization Using Evolution Strategies. In Ninth International Conference on Parallel Problem Solving from Nature PPSN IX, Proceedings, pp.939-948, Berlin: Springer; (abstract, paper draft in pdf).
• Auger, A. and N. Hansen (2006). Reconsidering the Progress Rate Theory for Evolution Strategies in Finite Dimensions. In Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2006), pp.445-452, ACM Press (abstract & erratum, paper in pdf).
• Igel, C., T. Suttorp and N. Hansen (2006). A Computational Efficient Covariance Matrix Update and a (1+1)-CMA for Evolution Strategies. In Proceedings of the Genetic and Evolutionary Computation Conference (GECCO 2006), pp.453-460, ACM Press; (abstract, paper in pdf).
• Auger, A. and Hansen, N. (2005). A Restart CMA Evolution Strategy With Increasing Population Size. In Proceedings of the IEEE Congress on Evolutionary Computation, CEC 2005, pp.1769-1776 (abstract & erratum, paper in pdf).
• Auger, A. and Hansen, N. (2005). Performance Evaluation of an Advanced Local Search Evolutionary Algorithm. In Proceedings of the IEEE Congress on Evolutionary Computation, CEC 2005, pp.1777-1784 (abstract & erratum, paper in pdf).
• Hansen, N. and S. Kern (2004). Evaluating the CMA Evolution Strategy on Multimodal Test Functions. In Eighth International Conference on Parallel Problem Solving from Nature PPSN VIII, Proceedings, pp. 282-291, Berlin: Springer; (abstract, paper in pdf, paper in ps, bibtex).
• Ocenasek, J., S. Kern, N. Hansen and P. Koumoutsakos (2004). A Mixed Bayesian Optimization Algorithm with Variance Adaptation. In Eighth International Conference on Parallel Problem Solving from Nature PPSN VIII, Proceedings, pp. 352-361, Berlin: Springer (paper in pdf).
• Müller, S.D., N. Hansen and P. Koumoutsakos (2002). Increasing the Serial and the Parallel Performance of the CMA-Evolution Strategy with Large Populations. In Seventh International Conference on Parallel Problem Solving from Nature PPSN VII, Proceedings, pp. 422-431, Berlin: Springer; (abstract, paper in pdf, paper in gzipped ps).
• Hansen , N. (2000). Invariance, Self-Adaptation and Correlated Mutations in Evolution Strategies. Sixth International Conference on Parallel Problem Solving from Nature (PPSN VI), Proceedings, pp. 355-364; (abstract, paper in pdf, paper in gzipped ps).
• Ostermeier, A. and N. Hansen (1999). An evolution strategy with coordinate system invariant adaptation of arbitrary normal mutation distributions within the concept of mutative strategy parameter control. In W.Banzhaf, J.Daida, A.Eiben, M.H.Garzon, V.Honavar, M.Jakiela, R.E.Smith (eds.), GECCO-99 Proceedings of the Genetic and  Evolutionary Computation Conference, pp. 902-909, San Francisco: Morgan Kaufmann Publishers;  (abstract, paper in pdf, paper in gzipped ps).
• Hansen, N. and A. Ostermeier (1997). Convergence properties of evolution strategies with the derandomized covariance matrix adaptation: The (μ/μ_I, λ)-ES. In EUFIT'97, 5th Europ.Congr.on Intelligent Techniques and Soft Computing, Proceedings, Aachen, pp. 650-654. Verlag Mainz, Wissenschaftsverlag; (abstract, paper in pdf, paper in gzipped ps).
• Hansen, N. and A. Ostermeier (1996). Adapting arbitrary normal mutation distributions in evolution strategies: The covariance matrix adaptation. In Proceedings of the 1996 IEEE International Conference on Evolutionary Computation, pp. 312-317; (abstract, paper in pdf, paper in gzipped ps).
• Hansen, N., A. Gawelczyk and A. Ostermeier (1995). Sizing the population with respect to the local progress in (1, λ)-evolution strategies – a theoretical analysis. In 1995 IEEE International Conference on Evolutionary Computation Proceedings, pp. 80-85; (abstract, paper in pdf, paper in gzipped ps).
• Hansen, N., A. Ostermeier and A. Gawelczyk (1995). On the adaptation of arbitrary normal mutation distributions in evolution strategies: The generating set adaptation. In L. Eshelman (Ed.), Proceedings of the Sixth International Conference on Genetic Algorithms, Pittsburgh, pp. 57-64. Morgan Kaufmann; (abstract & errata, paper in pdf, paper in gzipped ps).
• Ostermeier, A., A. Gawelczyk and N. Hansen (1994). Step-size adaptation based on non-local use of selection information. In Y. Davidor, H.-P. Schwefel and R. Männer (eds.), Parallel Problem Solving from Nature--PPSN IV, Proceedings, Jerusalem, pp. 189-198. Springer; (paper in pdf).

Other Contributions and Reports

• Hansen N. (2008). CMA-ES with Two-Point Step-Size Adaptation. INRIA Research Report 6527 (abstract and report).
• Hansen N. (2008). Adaptive Encoding for Optimization. INRIA Research Report 6518 (abstract and report).
• Ros, R. and N. Hansen (2008). A Simple Modification in CMA-ES Achieving Linear Time and Space Complexity. INRIA Research Report 6498 (abstract and report).
• Hansen, N, R. Ros, N. Mauny, M. Schoenauer and A. Auger (2008). PSO Facing Non-Separable and Ill-Conditioned Problems. INRIA Research Report 6447 (abstract and report).
• Igel, C., N. Hansen and S. Roth (2005). The Multi-objective Variable Metric Evolution Strategy, Part I. Technical Report, IRINI-2001-04, Institut für Neuroinformatik (report in pdf).
• Müller, S.D., N.N. Schraudolph, P. Koumoutsakos and N.Hansen (2002). Step Size Adaptation in Evolution Strategies - Two Approaches. In A. Barry (Ed.), Workshop on Learning and Adaptation in Evolutionary Computation, Workshop Proceedings of the 2002 Genetic and Evolutionary Computation Conference (GECCO-2002), pp. 161-164, San Francisco: Morgan Kaufmann Publishers.
• Hansen, N., A. Ostermeier and A. Gawelczyk (1995). Über die Adaptation von allgemeinen, Koordinatensystem-unabhängigen, normalverteilten Mutationen in der Evolutionsstrategie: Die Erzeugendensystemadaptation. Technischer Report TR-02-95, Institut für Bionik und Evolutionstechnik der Technischen Universität Berlin; (abstract, paper in pdf, paper in gzipped ps).
• Rechenberg, I., F. Brand, N. Hansen, M. Herdy and A. Ostermeier (1995). Theorie der Evolutionsstrategie – Von der Zufallssuche zur intelligenten Strategie. In G. Wolf, R. Schmidt and M. van der Meer (eds.), Tagungsband zum Statusseminar des BMBF Bioinformatik 1995, 12484 Berlin, pp. 293-303. Projektträger Informationstechnik des BMBF bei der DLR, Abteilung Informationsverarbeitung.
• Ostermeier, A., A. Gawelczyk and N. Hansen (1993). A derandomized approach to self adaptation of evolution strategies. Technischer Report TR-03-93, Institut für Bionik und Evolutionstechnik der Technischen Universität Berlin; (abstract, paper in gzipped ps).
• Hansen, N. (1990). Kurzfristige Kursprognose mit Neuronalen Netzen. In Tagungsband der 19. Jahrestagung der WGMA--Grundlagen der Modellierung und Simulationstechnik, Rostock, pp. 66-71.
• Hansen, N. (1989). Der Einfluß einer Protein- und Energie-Mangeldiät auf die embryotoxische und teratogene Wirkung von Hydroxyharnstoff bei der Ratte. Dissertation, Freie Universität Berlin.