Information Retrieval Research Group at TH Köln

Who We Are

& What We Do

Information retrieval (IR) is the activity of obtaining information resources relevant to an information need. The best known IR usecase are search engines - the most prominent one of course is Google. The Information Retrieval Research Group at TH Köln (University of Applied Sciences) is doing research and development in the fields of retrieval evaluation, digital libraries, query suggestions and bibliometrics enhanced retrieval methods.

NEWSPublication at CLEF 2017

Our paper on “ Enriching Existing Test Collections with OXPath” was accepted for the Conference and Labs of the Evaluation Forum (CLEF 2017) in Dublin. A preprint of the paper is available at For a full list of publications check our group’s publication list.

NEWSNew interview in Inside out magazine

In the latest issue of TH Köln’s Inside out magazine (in German) an interview with Prof. Schaer about his work on long tail web search is featured.