Interactive Systems Group

The Interactive Systems Group at the University of Duisburg-Essen conducts research in the areas of human-computer interaction (HCI) and interactive technologies with the aim of creating highly usable, enjoyable and smart forms of interacting with digital media and products. The group follows an interdisciplinary approach in close cooperation with academic and industrial partners and is directed by Professor Jürgen Ziegler who holds the Chair for Interactive Systems and Interaction Design at the Department of Computer Science and Applied Cognitive Science.

Our research is mainly focused on the user interaction with systems that apply intelligent techniques, especially recommender and decision support systems, assistive and persuasive systems, as well as personalized user interfaces. The principal concern of our work is to make intelligent technologies more transparent, self-explanatory and user-controllable. We apply the methods and techniques developed in a wide range of application domains, including electronic business, social media, serious games, health and well-being, smart environments and automotive applications. The Interactive Systems Group also participates in the DFG Research Training Group “User-Centred Social Media”. Furthermore, we are strongly involved in the university’s educational programs in Applied Computer Science as well as Applied Cognitive and Media Science, offering courses in introductory and advanced HCI, recommender systems, electronic business, and general computer science subjects.


June 17th 2019

Demo accepted for RecSys 2019

Our demo paper “Towards Interactive Recommending in Model-based Collaborative Filtering Systems” has been accepted and we will present our TagMF-based interactive recommender system at this year’s RecSys conference.

June 7th 2019

Paper invited to the IJCAI Sister Conference Best Paper track

We were invited to present our RecSys 2018 best short paper on impact of item consumption in recommender systems user studies at the Sister Conference Best Paper track of the 28th International Joint Conference on Artificial Intelligence (IJCAI).

June 7th 2019

Paper accepted to EARS 2019

Our work on “Assessing the Helpfulness of Review Content for Explaining Recommendations” has been accepted as a short paper with oral presentation and poster to the 2nd International Workshop on ExplainAble Recommendation and Search EARS 2019, co-located with the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval held in Paris, France.

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Interaktive Systeme (Lecture)

June 25, 2019 12:00 – 14:00; LB 131

All courses

Workshops and events

September 18 to 22, 2017 in Duisburg, Germany

UCSM Summer School on New Frontiers in Social Media Research

August 31, 2017 in Como, Italy

International Workshop on Health Recommender Systems @RecSys 2017

June 23 to 26, 2015 in Duisburg, University of Duisburg-Essen and Fraunhofer inHaus

7th ACM SIGCHI Symposium on Engineering Interactive Computing Systems

All events

Funded research projects


Interaktive Messelösungen


Leverage argumentative statements in user reviews to improve the quality of system-generated recommendations and provide explanations


Developing a holistic persuasive self-monitoring system to support healthy aging

All projects