December 10 – 15 , 2006, Dagstuhl Seminar 06501

Practical Approaches to Multi-Objective Optimization


Jürgen Branke (KIT – Karlsruher Institut für Technologie, DE)
Kalyanmoy Deb (Indian Inst. of Technology – Kanpur, IN)
Kaisa Miettinen (Helsinki School of Economics, FI)
Roman Slowinski (Poznan University of Technology, PL)
Ralph E. Steuer (University of Georgia, US)

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One can say that there are two communities dealing with multiobjective optimization problems: MCDM (multiple criteria decision making) and EMO (evolutionary multiobjective optimization) communities and they have remained rather isolated from each other during the years: they have their own conferences, journals, etc. This was the starting point and motivation of the First Dagstuhl Seminar on Practical Approaches to Multi-Objective Optimization which was organized in November 2004 (see for the seminar and for the proceedings). The organizers were Juergen Branke (University of Karlsruhe, Germany), Kalyanmoy Deb (IIT Kanpur, India), Kaisa Miettinen (Helsinki School of Economics, Finland) and Ralph E. Steuer (University of Georgia, USA).

During the First Dagstuhl Seminar, two aspects clearly emerged and were unanimously agreed by all the participants. Firstly, getting both MCDM and EMO researchers and applicationists together in one seminar for five days and in a Dagstuhl environment was beneficial to both groups in terms of understanding each other's approaches better and fostering collaboration. Secondly, all the participants thought that it was a good starting event, but there was an urgent need for the two groups to arrange more such extended meetings to continue the interactions. For these reasons, the Second Dagstuhl Seminar was organized in December 2006.

In the Second Dagstuhl Seminar on Practical Approaches to Multi-Objective Optimization, about 80 researchers were invited, about 40 from the MCDM and 40 from the EMO community and, in all, about 50 researchers were able to attend the seminar. The organizers of the Second Dagstuhl Seminar were the same as in the First Seminar with the exception that Roman Slowinski (Poznan University, Poland) replaced Ralph E. Steuer.

In connection with the Second Dagstuhl Seminar, we (the organizers) decided to initiate an ambitions project of writing a book covering both MCDM and EMO approaches and their hybridization possibilities.

We believe that this book has the potential to become a key reference and inspiration for the growing community dealing with the challenges of multiobjective optimization. To start with, some of the world's best experts from both communities were invited to write chapters for the book, for example, about different approaches in MCDM and EMO and how their benefits can be but together in order to get new hybrid methods. Special attention was paid to interactive methods and methods utilizing preference information because many EMO approaches have lacked these properties until recently. The contents of the chapters were discussed in the seminar in order not to miss any important topics and, also to avoid overlaps. Besides talks devoted to book chapters, the seminar program consisted of talks on recent research trends. In addition, an important part of the seminar was active work in working groups.

The topics of the working groups were: real-world applications of multiobjective optimization, software, quality of Pareto set approximations, MODM ~V a learning perspective, parallel approaches for multiobjective optimization, and future challenges. Besides the invited chapters, a book chapter will be prepared based on the work of each working group.

The title of the book was decided to be Multiobjective Optimization:

Interactive and Evolutionary Approaches and it will be published by Springer in the LNCS Series as a LNCS State-of-the-Art Survey.

On behalf of all the organizers, I would like to thank the participants for active discussions and attendance as well as for a very positive attitude towards the book project.

Dagstuhl Seminar Series


  • Artificial Intelligence Optimization Soft Computing


  • Multi-criteria optimization
  • Evolutionary and classical methods
  • Interaction


In the series Dagstuhl Reports each Dagstuhl Seminar and Dagstuhl Perspectives Workshop is documented. The seminar organizers, in cooperation with the collector, prepare a report that includes contributions from the participants' talks together with a summary of the seminar.


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Dagstuhl's Impact

Please inform us when a publication was published as a result from your seminar. These publications are listed in the category Dagstuhl's Impact and are presented on a special shelf on the ground floor of the library.


Furthermore, a comprehensive peer-reviewed collection of research papers can be published in the series Dagstuhl Follow-Ups.