Dirk Lewandowski


Hamburg University of Applied Sciences
Department of Information
Finkenau 35
22081 Hamburg
Room 268

Contact Information

Call: (+49) 40 – 428 75-36 21

Email: dirk.lewandowski@haw-hamburg.de

Dirk Lewandowski


Dirk Lewandowski is a professor of information research and information retrieval at the Hamburg University of Applied Sciences, Germany. In the spring term 2021, he was a visiting research fellow at the Pufendorf Institute for Advanced Studies, Lund University, Sweden.

He studied library science at the School of Library Science in Stuttgart, philosophy, information science, and media studies at Heinrich Heine University in Düsseldorf, and psychology at Fernuniversität in Hagen. He received his Ph.D. in information science from Heinrich Heine University in 2005.

Dirk's research interests are Web information retrieval, search engine user behaviour and the role that search engines play in society. His work has been published in some of the leading information science journals, including JASIST, Journal of Information Science and Journal of Documentation. Dirk has served as an expert to, among others, the High Court of Justice (UK) and the German Parliament (Deutscher Bundestag). He is an ASIS&T Distinguished Member, and has been named an ACM Distinguished Speaker in 2016.

Prof. Lewandowski authored and edited several books on search engines, including “Suchmaschinen verstehen” (Springer, 3rd edition 2021) and “Web Search Engine Research” (Emerald Group Publishing, 2012), as well as a series of German-language handbooks on search.

He is an editorial board member of several international journals, including Journal of the Association for Information Science & Technology (JASIST), Information and Learning Science, and Online Information Review.

Recent publications

Sundin, O.; Lewandowski, D.; Haider, J. (2021): Whose Relevance?: Web Search Engines as Multi-sided Relevance Machines. Journal of the Association for Information Science and Technology. https://doi.org/10.1002/asi.24570

Lewandowski, D.; Sünkler, S.; Schultheiß, S.; Häußler, H.; Spree, U.; Behnert, C. (2021): The Search Studies Group at Hamburg University of Applied Sciences. Datenbank Spektrum. https://doi.org/10.1007/s13222-021-00375-x

Lewandowski, D.; Sünkler, S.; Yagci, N. (2021): The Influence of search engine optimization on Google’s results: A multidimensional approach for detecting SEO. 13th ACM Web Science Conference, 2021. https://doi.org/10.1145/3447535.3462479
Schultheiß, S.; Lewandowski, D. (2021): Misplaced trust? The relationship between trust, ability to identify commercially influenced results, and search engine preference. Journal of Information Science. https://doi.org/10.1177/01655515211014157
Schultheiß, S.; Lewandowski, D. (2021): How users’ knowledge of advertisements influences their viewing and selection behaviour in search engines. Journal of the Association for Information Science and Technology 72(3), 285-301. https://doi.org/10.1002/asi.24410
Schultheiß, S.; Lewandowski, D. (2021): ‘Outside the industry, nobody knows what we do’: SEO as seen by search engine optimizers and content providers. Journal of Documentation 77(2), 542-557. https://doi.org/10.1108/JD-07-2020-0127
Hinz, K.; Sünkler, S.; Lewandowski, D. (2020): Selbstdarstellung und Positionierung von Kandidatinnen und Kandidaten zur Bundestagswahl 2017 in Google-Infoboxen. M&K Medien & Kommunikationswissenschaft. https://doi.org/10.1108/JD-07-2020-0127
Schultheiß, S.; Linhart, A.; Behnert, C.; Rulik, I.; Lewandowski, D. (2020): Known-item searches and search tactics in library search systems: Results from four transaction log analysis studies. Journal of Academic Librarianship 46(5), article 102202. https://doi.org/10.1016/j.acalib.2020.102202
Lewandowski, D.; Kammerer, Y. (2020): Factors Influencing Viewing Behaviour on Search Engine Results Pages: A Review of Eye-Tracking Research. Behaviour & Information Technology https://doi.org/10.1080/0144929X.2020.1761450
Lewandowski, D.; Sünkler, S.; Schultheiß, S. (2020): Studies on Search: Designing Meaningful IIR Studies on Commercial Search Engines. Datenbank Spektrum 20(1), 5-15. https://doi.org/10.1007/s13222-020-00331-1

See the full list of publications.


  1. 2020

    B.Sc. in Psychology

    Fernuniversität in Hagen, Germany
  2. 2005

    Ph.D. in Information Science

    Heinrich Heine University Düsseldorf, Germany
  3. 2001

    Magister Artium in Philosophy, Media Studies and Information Science

    Heinrich Heine University Düsseldorf, Germany
  4. 1997

    Diploma in Library Science

    Hochschule für Bibliotheks- und Informationswesen, Stuttgart, Germany

Professional Experience

  1. since 3/2007
    Professor for Information Research & Information Retrieval
    Hamburg University of Applied Sciences, Department of Information, Hamburg, Germany
  2. 6/2003 – 2/2007
    Independent consultant
    Clients (among others): Web.de (Top3 German Web portal), Bertelsmann Foundation, Hochschulbibliothekszentrum NRW (Library consulting centre)
  3. 6/2006 – 12/2006
    Researcher in bibliometrics
    Institute for Research Information and Quality Assurance (IFQ), Bonn, Germany
  4. 7/2004 – 12/2004
    Graduate Assistant
    Heinrich-Heine-University, Department of Information Science, Düsseldorf, Germany
  5. 11/2001 – 6/2004
    Project Manager (Research)
    NRW Medien GmbH, Düsseldorf, Germany
  6. 12/1997-10/2001
    Librarian and information consultant
    Ministry of Economic Affairs and Energy of the State of Northrhine Westphalia


  • 2021
    ASIS&T Distinguished Member
    Association for Information Science & Technology
  • 2016
    Distinguished Speaker
    Association for Computing Machinery
  • 2013
    Outstanding Reviewer Award
    Online Information Review (Emerald Publishing)
  • 2011
    Outstanding Paper Award
    Online Information Review (Emerald Publishing)
  • 2011
    Outstanding Author Contribution Award
    Advances in Librarianship (Emerald Publishing)