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Journal of Interactive Media

Editor-in-Chief: Ziegler, Jürgen

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Volume 14, Issue 1 (Apr 2015)


Merging Interactive Information Filtering and Recommender Algorithms – Model and Concept Demonstrator

Benedikt Loepp
  • Corresponding author
  • University of Duisburg-Essen, Germany
  • Email:
/ Katja Herrmanny
  • University of Duisburg-Essen, Germany
  • Email:
/ Prof. Dr.-Ing. Jürgen Ziegler
  • University of Duisburg-Essen, Germany
  • Email:
Published Online: 2015-04-01 | DOI: https://doi.org/10.1515/icom-2015-0006


To increase controllability and transparency in recommender systems, recent research has been putting more focus on integrating interactive techniques with recommender algorithms. In this paper, we propose a model of interactive recommending that structures the different interactions users can have with recommender systems. Furthermore, as a novel approach to interactive recommending, we describe a technique that combines faceted information filtering with different algorithmic recommender techniques. We refer to this approach as blended recommending. We also present an interactive movie recommender based on this approach and report on its user-centered design process, in particular an evaluation study in which we compared our system with a standard faceted filtering system. The results indicate a higher level of perceived user control, more detailed preference settings, and better suitability when the search goal is vague.

Keywords: Models; Recommender Systems; Interactive Recommending; Information Filtering; User Interfaces


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About the article

Benedikt Loepp

Benedikt Loepp, M. Sc. works as a researcher in the Department of Computer Science and Applied Cognitive Science at the University of Duisburg-Essen. His research focuses on the field of recommender systems, in particular, new ways to increase their interactivity.

Katja Herrmanny

Katja Herrmanny, B. Sc. joined the Interactive Systems group as a student assistant in 2012, while studying in the bachelor program of Applied Cognitive and Media Science at the University of Duisburg-Essen. After receiving her bachelor’s degree in September 2012, she now works as a researcher, while studying the master program of Applied Cognitive and Media Science.

Prof. Dr.-Ing. Jürgen Ziegler

Jürgen Ziegler is a full professor in the Department of Computer Science and Applied Cognitive Science at the University of Duisburg-Essen where he directs the Interactive Systems Research Group. Prior to joining the University, he was head of the Competence Center for Software Technology and Interactive Systems at the Fraunhofer Institute for Industrial Engineering in Stuttgart.

Published Online: 2015-04-01

Published in Print: 2015-04-15

Citation Information: icom, ISSN (Online) 2196-6826, ISSN (Print) 1618-162X, DOI: https://doi.org/10.1515/icom-2015-0006. Export Citation

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