Abstract. Recommender systems (RecSys) research depends on extensive empirical evaluation, yet translating experimental designs into executable code remains a manual, error-prone process. This paper presents AutoRecLab, a Python-based autonomous RecSys lab that automates RecSys experimentation Read more…
Abstract. FINALLY is a web-based recommender system for dataset selection in RecSys experiments. It supports a decision often made manually or by convention: choosing datasets to evaluate a recommendation algorithm offline. With FINALLY, users choose Read more…
This blog post is part of our series on potential Bachelor’s and Master’s theses. If you want us to supervise your thesis, contact us. If you just stumbled upon this blog post and want to Read more…
Liebe Studierende der Universität Siegen, wenn Sie irgendwann in Ihrem Leben ein Start-up gründen wollen, dann tun Sie es nicht „irgendwann“. Tun Sie es jetzt — während des Studiums oder direkt danach. Nicht, weil es Read more…
We released OmniRec 1.0.0, the first major version of our open-source Python library for reproducible and interoperable recommender systems experimentation. OmniRec was recently presented by Philipp Meister at ECIR 2026 in Delft, where he introduced Read more…
This semester, I introduced a custom GPT tailored to my Introduction to Machine Learning lecture. The goal is simple: provide students with an additional, always-available resource that supports learning, exam preparation, and communication. The system Read more…
We announce LensKit-Auto 0.1.1, our open-source AutoRecSys library built on the Python LensKit recommender system framework. What is LensKit-Auto? Originally introduced as a Demo paper at the 17th ACM Conference on Recommender Systems (RecSys 2023), Read more…
We are excited to announce that our research assistant, Philipp Meister, recently presented our demo paper on OmniRec as a poster at ECIR 2026 in Delft. OmniRec is a new open-source Python library for unified Read more…
Zusammenfassung: Eine Kundin kauft Babygrieß bei Rossmann, meint ranzigen Geruch wahrzunehmen und reklamiert. In der Filiale wird die Kundin nach ihrer Darstellung nach langer Diskussion des Ladens verwiesen und die Rücknahme mit Argumenten verweigert, die Read more…
Joeran Beel (University of Siegen, Germany) Bela Gipp (University of Göttingen, Germany) Tobias Vente (University of Antwerp, Belgium) Moritz Baumgart (University of Siegen, Germany) Philipp Meister (University of Göttingen, Germany) Pre-Print @misc{beel2025autorecsysautoreclabbuildevaluate, title={From AutoRecSys to Read more…
Zusammenfassung: Mein zweiter echter Fall für den „KI-Anwalt“ ChatGPT – und diesmal mit einem ganz anderen Ausgang. Gegen die LVM hatte ChatGPT mich bei einer Klage unterstützt, die ich am Ende verlor. Diesmal ging es Read more…
We are excited to share that our PhD student, Tobias Vente, presented our research paper, “APS Explorer: Navigating Algorithm Performance Spaces for Informed Dataset Selection”, at the ACM RecSys 2025 conference held at the O2 Universum Convention Center in Prague, Czechia The Read more…
We are pleased to announce that our paper, “Green Recommender Systems: Understanding and Minimizing the Carbon Footprint of AI-Powered Personalization,” has been accepted for publication in ACM Transactions on Recommender Systems (TORS). It is already Read more…
Last week, the ISG team—Prof. Joeran Beel, Moritz Baumgart, Lukas Wegmeth, Tobias Vente, and Philipp Meister—attended the ACM RecSys 2025 conference held at the O2 Universum Convention Center in Prague, Czechia. As the premier venue for recommender systems Read more…
Alan Said, chair of the ACM RecSys steering committee, just announced that the ACM Recommender Systems Conference (RecSys) 2027 will take place in Hawaiʻi. I, Joeran Beel, will serve as General Co-Chair together with Christine Read more…
I am pleased to announce that Lukas Wegmeth has completed his PhD in computer science after 3.5 years, earning a magna cum laude. The early completion is a success for him and, frankly, a loss Read more…
Following my recent visit to Prof. Min-Yen Kan at the National University of Singapore, Moritz Baumgart, Min-Yen Kan and I co-authored a paper critically evaluating Sakana’s AI Scientist (to be published in SIGIR Forum). Our Read more…
Over the past semester, several Bachelor students at the University of Siegen undertook a bold challenge in our Machine Learning Praktikum: they didn’t just learn algorithms—they tried to reproduce published machine learning or recommender systems Read more…
We are excited to share that our PhD student, Tobias Vente, presented our research paper, “The Potential of AutoML for Recommender Systems,” at the ACM UMAP 2025 conference held at the Verizon Executive Education Center at Cornell Tech on Roosevelt Island, New Read more…
In diesem Blogpost dokumentiere ich, wie das Landesamt für Besoldung und Versorgung NRW (LBV) versucht hat, mir eine Versorgungsauskunft faktisch zu verwehren, wie anschließend zu meinen Ungunsten entschieden wurde – und wie ich am Ende Read more…
Until recently, AI systems were primarily used for narrow tasks such as analysing large datasets or identifying patterns in complex information. However, with large-language models (LLMs), we are approaching a new frontier: the full automation Read more…
Mitte 2024 verloren mein „KI-Anwalt“ ChatGPT und ich vor dem Amtsgericht Siegen gegen die LVM. Worum es ging, wie die Klage mit KI-Unterstützung entstand und wo ChatGPT dabei gründlich versagte, habe ich im ersten Teil Read more…
We are thrilled to announce that Dr. André Klahold has been appointed an Honorary Professor at the University of Siegen’s Department of Electrical Engineering and Computer Science. This prestigious recognition underscores his significant contributions to Read more…
Earlier this year, we published a post about our paper and tool Checky, the Paper-Submission Checklist-Generator for Authors, Reviewers and LLMs, after its acceptance at ECIR 2025. Now, I’m excited to share my experience presenting the Read more…