Abstract As recommender systems become increasingly prevalent, the environmental impact and energy efficiency of training these large-scale models have come under scrutiny. This paper investigates the potential for energy-efficient algorithm performance by optimizing dataset sizes through downsampling techniques. We conducted Read more…
We are thrilled that 8 of our 11 submissions to the 18th ACM Recommender-Systems Conference and Workshops (RobustRecSys and RecSoGood) were accepted for publication. Our research was conducted jointly with partners from the University of Gothenburg (Alan Said), the University Read more…
This article (PDF Version) was part of the recent Dagstuhl Seminar “Evaluation Perspectives of Recommender Systems: Driving Research and Education”. The full report should be published soon. Cite as follows: I recall vividly when more than a decade ago – Read more…
Accepted for publication at the International Conference on Artificial Intelligence and Machine Learning Research (CAIMLR). The PDF is available here. Feel free to also read the original proposal that led to the current publication. Abstract In this paper, we present Read more…
Accepted for publication as late-breaking-result (LBR) at the 18th ACM Conference on Recommender Systems. Read the article as PDF here. Abstract When designing recommender-systems experiments, a key question that has been largely overlooked is the choice of datasets. In a Read more…
Full pre-print as PDF: https://arxiv.org/abs/2408.08203 Abstract As global warming soars, the need to assess the environmental impact of research is becoming increasingly urgent. Despite this, few recommender systems research papers address their environmental impact. In this study, we estimate the Read more…
The German Research Association (Deutsche Forschungsgemeinschaft, DFG) recently issued guidelines for using artificial intelligence, including tools like ChatGPT, to write research papers and grant applications. The DFG supports using AI for these purposes, excluding reviews but emphasizes the need for Read more…
I recently enjoyed spending one week in Taipei, Taiwan, attending the PAKDD 2024 conference and meeting a few colleagues. Despite a full schedule, I had enough time to explore the city and get to know the Taiwanese food and a Read more…
This proposal is also available as pre-print (PDF) on OSF.io. If you want to cite this proposal, please cite: Introduction K-fold cross-validation is widely regarded as a robust method for model evaluation in machine learning and related fields, including recommender Read more…
Im Mai 2023 veröffentlichte ich einen Tweet auf Twitter Beitrag auf X. Dort zeigte und kommentierte ich Statistiken, dass eine große Anzahl vorwiegend indischer Studenten in einer meiner Vorlesungen plagiierte. Einigen Personen gefiel dieser Beitrag nicht und sie beschwerten sich. Read more…
We proudly announce that the Department of Electrical Engineering and Computer Science at the University of Siegen and the Department of Applied Information Technology at the University of Gothenburg have signed an Erasmus agreement. The agreement will support exchanges and Read more…
Tobias spent two weeks with Bart Goethels and his team at the ADReM Data Lab at the University of Antwerp. He worked on novel recommender system algorithms incorporating ensembling techniques during this time. Located within the Department of Mathematics and Read more…
I am honoured to be appointed Chair of the Examination Board (German: “Prüfungsausschussvorsitzender”) for the Mechatronics study program at the University of Siegen. Initiated in the fall of 2001, this Master’s Program is an interdisciplinary initiative presented by the Department Read more…
Recently, we were delighted to learn that our paper “Revealing the Hidden Impact of Top-N Metrics on Optimization in Recommender Systems” was accepted for the “Full Paper” track at the ECIR 2024. The paper, co-authored by members of our chair, Read more…
The Germany Academic Exchange Service (DAAD – Deutscher Akademischer Austauschdienst) invited its alumni to Berlin to discuss recent advances in generative artificial intelligence. Dr. Holger Finken, Cordula Behrsing and Jana Zettler organized the event. Prof. Dr. Ute Schmid held the Read more…
Our Ph.D. students, Tobias Vente, and Lukas Wegmeth, will attend the ACM RecSys 2023 conference in Singapore to present their latest work on Automated Recommender Systems (AutoRecSys) with four papers: two in the Doctoral Symposium, one in the PERSPECTIVES 2023 Read more…
As part of my research visit to the University of Gothenburg, I am glad to announce that I will be giving a seminar on “The ‘unreasonable’ effectiveness of Graphical User Interfaces for Recommender Systems”. The seminar will take place at Read more…
I am delighted to announce that I am visiting Alan Said and his research group at the University of Gothenburg for a knowledge exchange about sustainable recommender systems and machine learning. Sweden’s innovation agency VINNOVA has approved funding for three Read more…
The German VDE Bergisch Land-Südwestfalen offers stipends for students who are writing their Bachelor’s or Master’s thesis. The stipend accumulates up to a total of €1,800 (6 months á €300). The stipend aims at students in the field of electrical Read more…
The ACM RecSys 2023 Doctoral Symposium Chairs accepted the extended abstracts that Tobias Vente and Lukas Wegmeth submitted. Abstracts will be presented by their authors and discussed with the chairs and other students at the conference. The extended abstract was Read more…
I am honored and glad to be invited again to continue to serve on the scientific advisory board of the German Academic Exchange Service (Deutscher Akadademischer Austauschdienst – DAAD), for the IFI program. The IFI program aims at young researchers Read more…
On April 18 and 19, 2023, the Model-based Engineering Group and the Intelligent Systems Group, both at the University of Siegen, conducted a research retreat. The event featured the following presentations, and many interesting discussions relating to machine learning, recommender Read more…
We are grateful for the opportunity to present some of our recent work at the ISG with two posters at the COSEAL Workshop 2023 at Sorbonne University in Paris. The COnfiguration and SElection of ALgorithms (COSEAL) network of researchers regularly Read more…
At the end of last year, we had the pleasure of presenting our publication of Lennart Purucker‘s Master thesis at the 22nd IEEE International Conference on Data Mining (ICDM) in Florida, USA! Lennart worked on Meta-Learning for Subgroup Discovery during Read more…
ChatGPT ist derzeit in aller Munde und vollbringt Erstaunliches. Es löst Klausuren, schreibt Aufsätze und Gedichte, programmiert Software und vieles mehr. Ich wollte einmal probieren, ob ChatGPT Humor hat, und nützlich im Bereich (Stadt) Marketing ist. Das Ergebnis ist, wie Read more…