Get in touch.

List of contacts

Do you have any questions about ZB MED`s services or the range of literature we offer? Or maybe you need some tips on how to run searches in LIVIVO?

Phone: +49 (0)221 478-5685

Cologne Site

Medicine and Health

ZB MED – Information Centre for Life Sciences
Gleueler Straße 60
50931 Cologne (Köln)

Bonn Site

Nutritional, Environmental and Agricultural Sciences

ZB MED – Information Centre for Life Sciences
Friedrich-Hirzebruch-Allee 4
53115 Bonn




An infrastructure and research centre for data and information in the life sciences.

Life sciences research needs a solid infrastructure.

ZB MED carries out the applied research required to achieve this.


InfraSTructurEs for Living LAbs

Funded by the German Research Foundation, the STELLA project aimed to establish an evaluation infrastructure to evaluate search and recommender services during live operation of web-based search systems with real users. STELLA provides an integrated e-research environment for the research areas of information retrieval and recommender systems. The experimental set-up differs significantly both from traditional TREC studies that can only be carried out offline and from other user studies that can only be performed under laboratory conditions. STELLA gives researchers access to an evaluation methodology that could previously only be utilised on large commercial platforms in the industrial arena.


The project will be continued in STELLA II.

ZB MED’s role in the project

  • Connecting LIVIVO to the STELLA infrastructure via an API and integrating recommender systems that had already been developed.
  • Developing a methodology tailored to LIVIVO to improve the ranking algorithms.
  • Participating in a planned research initiative with a system that uses recognized biomedical entities in queries and documents to improve ranking algorithms.


December 2018 – August 2022

Funding bodies

German Research Foundation (DFG)


  • TH Köln – University of Applied Sciences
  • GESIS Leibniz Institute for the Social Sciences, Cologne