News

Years

2021 | 2020

Poster presentation: Explainable Interactive Multiobjective Optimization– Nov. 25, 2021

This week, Giovanni Misitano presented a poster titled Explainable Interactive Multiobjective Optimization during the IT Faculty Research Day 2021 held at the University of Jyväskylä on November 24th. The poster presents a new exciting idea of applying SHAP values in interactive multiobjective optimization to explain reference point based methods. The work presented in the poster is related to an active research topic involving also Bekir Afsar, Giomara Lárraga Maldonado, and Kaisa Miettinen.

If you missed the poster presentation, the poster is available online here.

Posted by Giovanni Misitano

DEMO tutorial on "Decision Making under Deep Uncertainty"– Nov. 22, 2021

The DEMO Tutorial given by Dr. Babooshka Shavazipour on “Decision Making under Deep Uncertainty” can be viewed using the following link: https://youtu.be/OiGVwncLBi0.

Posted by Babooshka Shavazipour

You may now cite DESDEO!– Nov. 15, 2021

Our article title DESDEO: The Modular and Open Source Framework for Interactive Multiobjective Optimization has been published in IEEE Access! Check it out and remember to cite it if you happen to use DESDEO in your work!

The article is available as open-acces here.

desdeo-logo

Posted by Giovanni Misitano

Website update!– Nov. 4, 2021

We have updated the DESDEO website with some changes and new features. These include:

  • A new section of the website: Materials. Here, you can find various files and other assets related to DESDEO that are shared publicly.
  • News articles can now be linked to directly! Just copy and paste the url found in the link after the date in the news article heading.
  • You can now navigate to different years in the news.
  • Figures can now be attached to new. So expect more visual content to be found in the news from now on!
  • Navigation utilities added to the publications sections as well. You can now jump to a specific publication type.

Here is a figure to showcase the new possibility to have figures in the news: pareto-front

Posted by Giovanni Misitano

New MSc thesis topics available!– Oct. 26, 2021

New MSc thesis topics are available! The contents of the topics are related to the DEMO thematic research area! Many, if not most, of the topics are very closely related to DESDEO. So! If you are looking to complete your master's degree and to contribute to DESDEO, look no further! The topics are suggestive, which means that they can be tailored to meet your goals and interests. For example, you can choose to focus on the software side or on the theoretical side in some of the topics.

For the list of the available topics, see this document!

Posted by Giovanni Misitano

Seminar talk: Interfaces through the ages– Oct. 14, 2021

Giovanni Misitano gave a talk about his personal experiences in developing DESDEO with a particular focus on the different interfaces that have been developed for DESDEO in the past. Old iterations of DESDEO are also discussed.

The talk was recorded and is available on YouTube.

Posted by Giovanni Misitano

Acceptance notification of a journal paper!– Oct. 13, 2021

The paper titled Comparing Interactive Evolutionary Multiobjective Optimization Methods with an Artificial Decision Maker has been accepted in the journal called Complex & Intelligent Systems.

Afsar, B., Ruiz, A.B., Miettinen, K., Comparing Interactive Evolutionary Multiobjective Optimization Methods with an Artificial Decision Maker, Complex & Intelligent Systems, to appear, 2021.

Posted by Bekir Afsar

Seminar talk and tutorial: recent development in DESDEO's graphical interfaces– Oct. 8, 2021

This week has been very eventful regarding recent developments in DESDEO's graphical interfaces. First, a tutorial was given by Giovanni Misitano about the web stack recently developed to interface into DESDEO, and that can be used to build graphical interfaces for DESDEO. The three components of the stack are available on GitHub: desdeo-webapi, desdeo-components, and desdeo-frontend. The tutorial given by Giovanni was recorded and is available on YouTube.

Second, our summer trainee Juuso Pajasmaa gave a seminar talk about his experiences during the summer in our weekly DEMO seminar slot. Juuso worked on implementing new visualizations in desdeo-components and also implemented a working interface for NAUTILUS Navigator in desdeo-frontend. Moreover, he made contribution to DESDEO working on implementing indicators for PBEA/IBEA and implementing a DBMOPP generator, among other things as well. Juuso's talk is available on YouTube. Juuso will continue working on DESDEO also in the future!

Posted by Giovanni Misitano

Publication notification of a conference paper!– Oct. 6, 2021

The paper titled Interactive Multiobjective Optimization in Lot Sizing with Safety Stock and Safety Lead Time. has been published in the Proceedings of the In International Conference on Computational Logistics (ICCL 2021). The paper can be found online here.

Kania A., Sipilä J., Afsar B., Miettinen K. (2021) Interactive Multiobjective Optimization in Lot Sizing with Safety Stock and Safety Lead Time. In: Mes M., Lalla-Ruiz E., Voß S. (eds) Computational Logistics (pp. 208-221). ICCL 2021. Lecture Notes in Computer Science, vol 13004. Springer, Cham.

Posted by Bekir Afsar

Visiting researcher: Jana Burkotová– Oct. 1, 2021

During this autumn, Jana Burkotová, assistant professor at the Faculty of Science of Palacký University, Czech Republic, has been visiting the Multiobjective Optimization Group. Her research interest concerns numerical methods and optimization. Currently, she is turning her specialization towards multiobjective optimization problems. In particular, she focuses on computationally expensive optimization problems with applications in the pump industry. Last Wednesday, she gave a talk in our DEMO seminar about her research interest in the field of pump industry

Posted by Giovanni Misitano

Seminar talk: Towards Explainable Artificial Intelligence in Multiobjective Optimization– Sept. 23, 2021

Michael Emmerich is an associate professor at Leiden University (The Netherlands) currently visiting the Multiobjective Optimization Group as a research fellow. He gave a talk in our weekly seminars titled Towards Explainable Artificial Intelligence in Multiobjective Optimization. In his talk, Michael Emmerich gave a brief introduction about explainable artificial intelligence and gave some exciting ideas on how to apply it in multiobjective optimization.

The talk is available for viewing on YouTube.

Posted by Giovanni Misitano

Modular physical interfaces to control interactive multiobjective optimization methods– Sept. 3, 2021

One of the trainees working in our research groups during the summer, Stefan Otayagich, has developed modular physical interfaces to control preference input in interactive multiobjective optimization methods. The layout of the interface can be modified by adding, removing, or interchanging physical modules containing switches, nobs, buttons and sliders. As far as we know, Stefan's work is first of its kind!

Last Wednesday, Stefan gave a talk about his work during the summer in our weekly DEMO seminar. The whole talk was recorded and is available to be viewed on YouTube. The code related to this project can be found on GitHub.

Sadly, with this talk Stefan's journey within our research group came to its end (at least for now). On behalf of our research group, I would like to thank Stefan for his massive efforts and great work. He managed to overcome all expectations!

Thank you Stefan!

Posted by Giovanni Misitano

Successful summer school course– Aug. 25, 2021

The 30th Jyväskylä Summer School ended on the 20th of August. Students enrolled in the Multicriteria Design Optimization course (lectured by Assoc. Prof. Michael Emmerich, Leiden University) successfully used the DESDEO framework to learn about multiobjective optimization methods and solve Design Optimization problems. The codes and slides can be found on GitHub.

Posted by Bhupinder Saini

Back from the holidays and an additional accepted paper– Aug. 18, 2021

Our research group at the University of Jyväskylä is back from the summer holidays. During the summer, a conference paper title Interactive multiobjective optimization in lot sizing with safety stock and safety lead time by Adhe Kania, Juha Sipilä, Bekir Afsar, and Kaisa Miettinen was accepted to be presented at the International Conference on Computational Logistics in September. The paper will be published in the conference proceedings published by Springer. DESDEO has been utilized in this work.

Posted by Giovanni Misitano

Publication notification of a journal paper!– July 20, 2021

The paper titled Multi-scenario multi-objective robust optimization under deep uncertainty: A posteriori approach has been published online in the journal called Environmental Modelling & Software. The paper is openly available via sciencedirect.

B. Shavazipour, J. H. Kwakkel, K. Miettinen, Multi-scenario multi-objective robust optimization under deep uncertainty: A posteriori approach, Environmental Modelling & Software, Volume 144, 2021, 105134, DOI.

Posted by Babooshka Shavazipour

Publication notification of a journal paper!– July 6, 2021

The paper titled Visualizations for decision support in scenario-based multiobjective optimization has been published online in the journal called Information Sciences. The paper is openly available via sciencedirect.

B. Shavazipour, M. López-Ibáñez, K. Miettinen, Visualizations for decision support in scenario-based multiobjective optimization, Information Sciences, Volume 578, Pages 1-21, 2021. DOI.

Posted by Babooshka Shavazipour

Summer reinforcements!– June 23, 2021

Two new trainees have joined us for the summer and will work on DESDEO. Juuso Pajasmaa is working on graphical interfaces and new interactive visualizations implemented in Typescript, React, and D3. While Stefan Otayagich is working on physical interfaces to be used with interactive multiobjective optimization methods found in DESDEO using Arduinos. Both of our trainees will also work on the core packages in DESDEO implementing both interactive MCDM and EMO methods not yet present in DESDEO. It is safe to say we all expect exciting advancements in the development of DESDEO to take place during this summer!

Posted by Giovanni Misitano

New version of DESDEO's documentation– June 14, 2021

We have updated the documentation of DESDEO framework. Have a look at the latest version here.

Posted by Giomara Larraga

We made it to the second stage in the Centre of Excellence call by the Academy of Finland!– May 21, 2021

Our letter of intent sent in the first stage for applying as a Centre of Excellence in a funding call by the Academy of Finland was accepted. This means our research group has now a shot at being nominated as a Finnish Centre of Excellence for the period 2022 - 2029. Being chosen as a Centre of Excellence is one of the biggest merits a Finnish research group can earn. Fingers crossed!

Read more about Centres of Excellence here.

Posted by Giovanni Misitano

Publication notification of a journal paper!– May 7, 2021

The paper titled Assessing the Performance of Interactive Multiobjective Optimization Methods: A Survey has been published online in the journal called ACM Computing Surveys. The paper is available via ACM Digital Library and JYX.

Afsar, B., Miettinen, K., Ruiz, F., Assessing the Performance of Interactive Multiobjective Optimization Methods: A Survey, ACM Computing Surveys, 54(4), article 85, 2021.

Posted by Bekir Afsar

The two trainees who have recently joined our group– April 30, 2021

Two trainees from Iran joined our group a few weeks back to attend a trainee-ship. Due to the pandemic, they have been working remotely on problem formulation and method implementation in DESDEO. A brief introduction of the two trainees is given below:

Golman Rahmanifar is currently studying transport system engineer at the Sapienza University of Rome. Her expertise lies mainly in operations research (more precisely in multi-objective optimization) and its application to transportation, scheduling, supply chain management, operation management, etc. She is interested in solving challenging real-life optimization problems, specifically in the logistics of freight transportation, in order to help solving the world's challenges, investigate behavioral aspects of supply chain decision making, and develop mathematical models to forecast flows or optimize logistic networks.

Mostafa Mohammadi is also currently studying transportation system engineering at the Sapienza University of Rome. He has eight years of experience in manufacturing and distribution companies, and is interested in applying multi-objective optimization and its application in supply chain management, transportation, and scheduling to optimize real-world problems in industry.

Posted by Giovanni Misitano

DEMO tutorial on “Tutorial on Visualization for Decision Support in Many-Objective Optimization”– April 26, 2021

The DEMO Tutorial gave by Dr. Jussi Hakanen on “Tutorial on Visualization for Decision Support in Many-Objective Optimization” can be viewed using the following link: https://youtu.be/NTGL4BpgpKI.

Posted by Babooshka Shavazipour

desdeo-tools 1.4.1 released– April 17, 2021

The new release brings support for a family of scalarization functions using the parameterized GLIDE-II framework. Fast non-dominated sorting has also been implemented, removing the requirement for the external PyGMO package.

Posted by Bhupinder Saini

Publication notification of a conference paper!– March 26, 2021

The paper titled An Artificial Decision Maker for Comparing Reference Point Based Interactive Evolutionary Multiobjective Optimization Methods has been published in the Proceedings of the 11th International Conference on Evolutionary Multi-Criterion Optimization (EMO 2021). The paper can be found online here.

Posted by Bekir Afsar

We are looking for a summer trainee!– March 18, 2021

UPDATE 26.3.2021: Thank you for your interest! The call has ended.

The Multiobjective Optimization Group is looking for a summer trainee interested in developing web-interfaces for using interactive methods found in the DESDEO framework. Read more about it here.

Posted by Giovanni Misitano

DEMO Tutorial on (Interactive) Multiobjective Optimization– March 5, 2021

The DEMO Tutorial gave by Prof. Kaisa Miettinen on "(Interactive) Multiobjective Optimization" can be viewed using the following link: https://youtu.be/JK_jJBK5Zgc.

Posted by Babooshka Shavazipour

desdeo-emo 1.1.3 released– March 1, 2021

The latest release of desdeo-emo brings support for MOEA/D and associated scalarizing functions! The scalarizing functions are implemented in a modular fashion and can be found in the desdeo-tools package. Read more details in the documentation. Comments and suggestions are welcome!

Posted by Bhupinder Saini

desdeo-emo 1.1.2 released– Feb. 19, 2021

The new release brings support for new methods of preference elicitation such as choosing preferred or non-preferred solutions. Read more details in the documentation. Comments and suggestions welcome!

Posted by Bhupinder Saini

DEMO Seminar talk on DESDEO development– Feb. 5, 2021

The DEMO Seminar talk given by Giovanni Misitano and Bhupinder Saini on "How to develop and contribute to DESDEO" can be viewed using the following link: https://youtu.be/JCZRBx55KBQ.

Posted by Bhupinder Saini

Acceptance notification of a journal paper!– Jan. 27, 2021

The paper titled Assessing the Performance of Interactive Multiobjective Optimization Methods: A Survey has been accepted in the journal called ACM Computing Surveys.

Afsar, B., Miettinen, K., Ruiz, F., Assessing the Performance of Interactive Multiobjective Optimization Methods: A Survey, ACM Computing Surveys, to appear, 2021.

Posted by Bekir Afsar

Publication notification of a journal paper!– Jan. 22, 2021

The paper titled Surrogate assisted interactive multiobjective optimization in energy system design of buildings has been published online in the journal called Optimization and Engineering. The paper is openly accessible via SpringerLink.

Aghaei Pour, P., Rodemann, T., Hakanen, J., Miettinen, K. Surrogate assisted interactive multiobjective optimization in energy system design of buildings. Optim Eng (2021).

Posted by Bekir Afsar

Publication notification of a conference paper!– Jan. 15, 2021

The paper titled Interactively Learning the Preferences of a Decision Maker in Multi-objective Optimization Utilizing Belief-rules by Giovanni Misitano has been published in the Proceedings of the 2020 IEEE Symposium Series on Computational Intelligence (SSCI). The paper can be found online here.

Posted by Giovanni Misitano

Acceptance notification of a conference paper!– Dec. 4, 2020

We are delighted to announce the acceptance of our paper for the EMO2021 conference.

Afsar, B., Miettinen, K., Ruiz, A. B., Artificial Decision Maker for Comparing Reference Point Based Interactive Evolutionary Multiobjective Optimization Methods, in "Evolutionary Multi-Criterion Optimization, 11th International Conference, Proceedings", Springer, to appear, 2021.

Posted by Bekir Afsar

Epsilon constraint method and NAUTILUS support added– Nov. 19, 2020

The desdeo-tools package now contains support for the epsilon constraint scalarization method. The desdeo-mcdm package has now an implementation of NAUTILUS ready to be used. These features were contributed by Antti Luopajärvi.

Posted by Giovanni Misitano

DESDEO 1.1 has been released!– Sept. 4, 2020

DESDEO v1.1 adds support for popular evolutionary algorithms such as RVEA and NSGA-III. Data-driven optimization and constrained optimization are also supported when using the EAs. Read the documentation for more information. Comments and contributions are welcome!

Posted by Bhupinder Saini

DESDEO 1.0 has been released!– June 17, 2020

The first release version of DESDEO, version 1.0, has been released. See the "Software" section of this webpage for further details. We warmly invite anyone interested to try out the framework, give their feedback, and contribute to the project! There is still a lot to do, and many details to be ironed out. This is only the beginning of the project!

Posted by Giovanni Misitano

NAUTILUS Navigator demo online!– April 21, 2020

NAUTILUS Navigator has been implemented in DESDEO. A web-based UI can also be found online to test the method. You can find the demo here: https://dash.misitano.xyz/

Posted by Giovanni Misitnano

Development of desdeo-mcdm module has begun– March 19, 2020

The development of interactive multi-objective optimization methods for the desdeo-mcdm module has begun. Upcoming methods include: Synchronous NIMBUS, NAUTILUS, and E-NAUTILUS. The methods will be available by the end of April.

Posted by Giovanni Misitano

Website is up– Feb. 6, 2020

The new DESDEO website has been launched on the World Wide Web.

Posted by Giovanni Misitano