The University of Southampton

Professor Steffen Staab Dr. rer. nat.

I have studied computer science and computational linguistics at the Universität Erlangen-Nürnberg and at the University of Pennsylvania. I worked in the previous computational linguistics research group at the Universität Freiburg and did my Ph.D. in computer science in the faculty for technology in 1998. Afterwards I joined Universität Stuttgart, Institute IAT & Fraunhofer IAO, before I moved on to the Universität Karlsruhe (now: KIT), where I progressed from project lead, over lecturer and senior lecturer and did my habilitation in 2002. In 2004 I became professor for databases and information systems at Universität Koblenz-Landau, where I founded the Institute for Web Science and Technologies (WeST) in 2009 and was head of it until 2020. Since February 2020 I have a chair for Analytic Computing at the Institute for Parallel and Distributed Systems of Universität Stuttgart. In parallel, I hold a Chair for Web and Computer Science at University of Southampton since March 2015.


Research interests

Data represent the world on our computers. While the world is very intriguing, data may be quite boring, if one does not know what they mean. I am interested in making data more meaningful to find interesting insights in the world outside.

How does meaning arise?

  • One can model data and information. Conceptual models and ontologies are the foundations for knowledge networks that enable the computer to treat data in a meaningful way.
  • Text and data mining as well as information extraction find meaningful patterns in data (e.g. using ontology learning of text clustering) as well as connections between data and its use in context (e.g. using smartphones). Hence, knowledge networks may be found in data.
  • Humans communicate information. In order to understand what data and information means, one has to understand social interactions. In the context of social network knowledge networks become meaningful for human consumption.
  • Eventually meaning is nothing that exists in the void. Data and information must be communicated to people who may use insights into data and information. Interaction between humans and computers must happen in a way that matches the meaning of data and information.

The World Wide Web is the largest information construct made by mankind to convey meaningful data. Web Science is the discipline that considers how networks of people and knowledge in the Web arise, how humans deal with it and which consequences this has for all of us. The Web is a meaning machine that I want do understand by my research.


d'Amato, Claudia, Staab, Steffen, Tettamanzi, Andrea, Duc Minh, Tran and Gandon, Fabien (2016) Ontology enrichment by discovering multi-relational association rules from ontological knowledge bases. SAC2016: 31st ACM Symposium on Applied Computing, Italy. 04 - 08 Apr 2016. 6 pp .

Staab, Steffen, Stalla-Bourdillon, Sophie and Carmichael, Laura (2016) Observing and recommending from a social web with biases (Web Science Institute (WSI) Pump - Priming Project) Southampton, GB. University of Southampton 37pp.

Homscheid, Dirk, Schaarschmidt, Mario and Staab, Steffen (2016) Firm-sponsored developers in open source software projects: a social capital perspective. Twenty-Fourth European Conference on Information Systems (ECIS), Turkey. 12 - 15 Jun 2016. 11 pp .

Wang, Xin, Staab, Steffen and Tiropanis, Thanassis (2016) ASPG: generating OLAP queries for SPARQL benchmarking. Joint International Semantic Technology Conference (JIST2016), Singapore, Singapore. 02 - 04 Nov 2016. 15 pp . (doi:10.1007/978-3-319-50112-3_13).

Carmichael, Laura, Stalla-Bourdillon, Sophie and Staab, Steffen (2016) Data mining and automated discrimination: a mixed legal/technical perspective. IEEE Intelligent Systems, 31 (6), 51-55. (doi:10.1109/MIS.2016.96).

Kumar, Chandan, Menges, Raphael and Staab, Steffen (2016) Eye-controlled interfaces for multimedia interaction. IEEE MultiMedia, 23 (4), 6-13. (doi:10.1109/MMUL.2016.52).

Leinberger, Martin, Lämmel, Ralf and Staab, Steffen (2017) The essence of functional programming on semantic data. Yang, Hongseok (ed.) In Programming Languages and Systems: 26th European Symposium on Programming, ESOP 2017, Held as Part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2017, Uppsala, Sweden, April 22–29, 2017, Proceedings. vol. 10201, Springer. pp. 750-776 . (doi:10.1007/978-3-662-54434-1_28).

Sun, Jun, Kunegis, Jerome and Staab, Steffen (2016) Predicting user roles in social networks using transfer learning with feature transformation. The Sixth IEEE ICDM Workshop on Data Mining in Networks (DaMNet 2016), Spain. 12 Dec 2016. 8 pp .

Menges, Raphael, Kumar, Chandan, Sengupta, Korok and Staab, Steffen (2016) eyeGUI: a novel framework for eye-controlled user interfaces. Proceedings of the 9th Nordic Conference on Human-Computer Interaction (NordiCHi'16), Sweden. 6 pp . (doi:10.1145/2971485.2996756).

Brosius, Dominik and Staab, Steffen (2016) Linked data querying through FCA-based schema indexing. Proceedings of the 5th International Workshop "What can FCA do for Artificial Intelligence"? co-located with the European Conference on Artificial Intelligence, (FCA4AI@ECAI 2016), Netherlands. 30 Aug 2016. pp. 63-68 .

Sengupta, Korok, Menges, Raphael, Kumar, Chandan and Staab, Steffen (2017) GazeTheKey: interactive keys to integrate word predictions for gaze-based text entry. Intelligent User Interfaces '17, Cyprus. 13 - 16 Mar 2017. 4 pp . (doi:10.1145/3030024.3038259).

Sarasua, Cristina, Staab, Steffen and Thimm, Matthias (2017) Methods for intrinsic evaluation of links in the Web of Data. ESWC 2017, Slovenia. 28 - 31 May 2017. 15 pp . (In Press)

Kumar, Chandan, Menges, Raphael, Müller, Daniel and Staab, Steffen (2017) Chromium based Framework to include Gaze Interaction in Web Browser. 26th International World Wide Web Conference, Perth, Australia. 03 - 07 Apr 2017. 5 pp . (doi:10.1145/3041021.3054730).

Kumar, Chandan, Menges, Raphael and Staab, Steffen (2017) Assessing the usability of gaze-adapted Interface against conventional eye-based input emulation. In 2017 IEEE International Symposium on Computer-Based Medical Systems. IEEE.. (doi:10.1109/CBMS.2017.155).

Sengupta, Korok, Sun, Jun, Menges, Raphael, Staab, Steffen and Kumar, Chandan (2017) Analyzing the impact of cognitive load in evaluating gaze-based typing. In IEEE International Symposium on Computer-based Medical Systems, Proceedings of. IEEE.. (doi:10.1109/CBMS.2017.134).

Kling, Christoph Carl, Kunegis, Jérôme, Sizov, Sergej and Staab, Steffen (2014) Detecting non-gaussian geographical topics in tagged photo collections. In WSDM '14 Proceedings of the 7th ACM international conference on Web search and data mining. ACM. pp. 603-612 . (doi:10.1145/2556195.2556218).

Kling, Christoph Carl, Kunegis, Jerome, Hartmann, Heinrich, Strohmaier, Markus and Staab, Steffen (2015) Voting behaviour and power in online democracy: a study of LiquidFeedback in Germany's Pirate Party. In Proceedings of the Ninth International Conference on Web and Social Media. AAAI. pp. 208-217 .

Kleinen, Alexander, Scherp, Ansgar and Staab, Steffen (2014) Interactive faceted search and exploration of open social media data on a touchscreen mobile phone. Multimedia Tools and Applications, 71 (1), 39–60. (doi:10.1007/s11042-013-1366-3).

Walter, Tobias, Parreiras, Fernando Silva and Staab, Steffen (2014) An ontology-based framework for domain-specific modeling. Software and Systems Modeling, 13 (1), 83-108. (doi:10.1007/s10270-012-0249-9).

Pickhardt, Rene, Gottron, Thomas, Körner, Martin, Wagner, Paul Georg, Speicher, Till and Staab, Steffen (2014) A generalized language model as the combination of skipped n-grams and modified kneser-ney smoothing. In Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (ACL 2014). vol. 1, Association for Computational Linguistics. pp. 1145-1154 . (doi:10.3115/v1/P14-1108).

Thuermer, Gefion, Roth, Silke, O'Hara, Kieron and Staab, Steffen (2017) Online participation in democratic processes: the case of the Green Party, Germany. ECPR General Conference, Norway. 05 - 08 Sep 2017. 22 pp .

Nikolopoulos, Spiros, Georgiadis, Kostas, Kalaganis, Fotis, Liaros, Georgios, Lazarou, Ioulietta, Adam, Katerina, Papazoglou-Chalikias, Anastasios, Chatzilari, Elisavet, Oikonomou, Vangelis, Petrantonakis, Panagiotis, Kompatsiaris, Ioannis, Kumar, Chandan, Menges, Raphael, Staab, Steffen, Müller, Daniel, Sengupta, Korok, Bostantjopoulou, Sevasti, Katsarou, Zoe, Zeilig, Gabi, Plotnik, Meir, Gotlieb, Amihai, Fountoukidou, Sofia, Ham, Jaap, Athanasiou, Dimitrios, Mariakaki, Agnes, Comandicci, Dario, Sabatini, Edoardo, Nistico, Walter and Plank, Markus (2017) A Multimodal dataset for authoring and editing multimedia content: The MAMEM project. Data in Brief. (doi:10.1016/j.dib.2017.10.072).

Janke, D., Staab, S. and Thimm, M. (2017) Koral: A glass box profiling system for individual components of distributed RDF stores. CEUR Workshop Proceedings, BLINK2017-NLIWo.

Janke, Daniel, Staab, Steffen and Thimm, Matthias (2018) Impact analysis of data placement strategies on query efforts in distributed RDF stores. Journal of Web Semantics, 50, 21-48. (doi:10.1016/j.websem.2018.02.002).

Nematbakhsh, Mohammadali, Teymourlouie, Mehdi, Zaeri, Ahmad, Thimm, Matthias and Staab, Steffen (2018) Detecting hidden errors in an ontology using contextual knowledge. Expert Systems with Applications, 95, 312-323. (doi:10.1016/j.eswa.2017.11.034).

Kügler, Patricia, Kestel, Philipp, Schon, Claudia, Marian, Max, Staab, Steffen and Wartzack, Sandro (2018) Ontology-based approach for the use of intentional forgetting in product development. 12 pp . (In Press)

Thuermer, Gefion, Roth, Silke, O'Hara, Kieron and Staab, Steffen (2018) Everybody thinks online participation is great – for somebody else: a qualitative and quantitative analysis of perceptions and expectations of online participation in the Green Party Germany. In WebSci '18 Proceedings of the 10th ACM Conference on Web Science. ACM. pp. 287-296 . (doi:10.1145/3201064.3201069).

Menges, Raphael, Tamimi, Hanadi, Kumar, Chandan, Walber, Tina, Schäfer, Christoph and Staab, Steffen (2018) Enhanced representation of web pages for usability analysis with eye tracking. ETRA 2018: 2018 ACM Symposium on Eye Tracking Research & Applications, Poland. 14 - 17 Jun 2018. 9 pp . (In Press)

Ramadan, Qusai, Shayan Ahmadian, Amir, Strüber, Daniel, Jürjens, Jan and Staab, Steffen (2018) Model-based discrimination analysis: A position paper. In FairWare '18 Proceedings of the International Workshop on Software Fairness. ACM.. (doi:10.1145/3194770.3194775).

Schon, Claudia and Staab, Steffen (2018) Towards SPARQL instance-level Update in the Presence of OWL-DL TBoxes. Borgo, Stefano, Kutz, Oliver, Loebe, Frank and Neuhaus, Fabian (eds.) In Proceedings of the Joint Ontology Workshops 2017. vol. 2050,

Sun, Jun, Staab, Steffen and Karimi, Fariba (2018) Decay of relevance in exponentially growing networks. In WebSci '18 Proceedings of the 10th ACM Conference on Web Science. ACM. pp. 343-351 . (doi:10.1145/3201064.3201084).

Sun, Jun, Staab, Steffen and Kunegis, Jérôme (2018) Understanding social networks using transfer learning. Computer, 51 (6).

Schon, Claudia, Staab, Steffen, Kügler, Patricia, Schleich, Benjamin and Wartzack, Sandro (2018) Metaproperty-guided deletion from the instance-level of a knowledge base. In Knowledge Engineering and Knowledge Management. EKAW 2018. Springer.. (doi:10.1007/978-3-030-03667-6_26).

Sengupta, Korok, Ke, Min, Menges, Raphael, Kumar, Chandan and Staab, Steffen (2018) Hands-free web browsing: enriching the user experience with gaze and voice modality. In Proceedings - ETRA 2018: 2018 ACM Symposium on Eye Tracking Research and Applications. vol. Part F137344, ACM.. (doi:10.1145/3204493.3208338).

Janke, Daniel and Staab, Steffen (2018) Storing and querying semantic data in the cloud. In, d'Amato, Claudia and Theobald, Martin (eds.) Reasoning Web. Learning, Uncertainty, Streaming, and Scalability: 14th International Summer School 2018, Esch-sur-Alzette, Luxembourg, September 22–26, 2018, Tutorial Lectures. (Information Systems and Applications, incl. Internet/Web, and HCI, , (doi:10.1007/978-3-030-00338-8_7), 11078) Reasoning Web Summer School 2018 (27/09/18) Springer, pp. 173-222. (doi:10.1007/978-3-030-00338-8_7).

Janke, Daniel and Staab, Steffen (2018) Compressing and maintaining statistics information about resource occurrences in a distributed RDF store. CEUR Workshop Proceedings, 2180.

Seifer, Philipp, Leinberger, Martin, Lämmel, Ralf and Staab, Steffen (2019) Semantic query integration with reason. The Art, Science, and Engineering of Programming, 3 (3), 1-28. (doi:10.22152/

Skubella, Adrian, Janke, Daniel and Staab, Steffen (2019) BeSEPPI: Semantic-based benchmarking of property path implementations. The Semantic Web - 15th International Conference, Portoroz, Slovenia. 02 - 06 Jun 2019. pp. 475-490 . (doi:10.1007/978-3-030-21348-0_31).

Staab, Steffen (2019) Concepts in application context. Cristea, D., Le Ber, F. and Sertkaya, B. (eds.) In Formal Concept Analysis. ICFCA 2019. vol. 11511, Springer. pp. 45-52 . (doi:10.1007/978-3-030-21462-3_4).

Staab, Steffen, Halford, Susan and Hall, Wendy (2019) Web science in Europe: beyond boundaries. Communications of the ACM, 62 (4), 74-79. (doi:10.1145/3312569).

Sengupta, Korok, Menges, Raphael, Kumar, Chandan and Staab, Steffen (2019) Impact of variable positioning of text prediction in gaze-based text entry. COGAIN Symposium on Communication by Gaze Interaction, Denver, CO, United States. 25 - 28 Jun 2019. (In Press)

Baris, Ipek, Schmelzeisen, Lukas and Staab, Steffen (2019) CLEARumor at SemEval-2019 Task 7: ConvoLving ELMo against rumors. 13th International Workshop on Semantic Evaluation, Minneapolis, United States. 06 - 07 Jun 2019.

Ignatenko, Vera, Koltcov, Sergej, Staab, Steffen and Boukhers, Zeyd (2019) Fractal approach for determining the optimal number of topics in the field of topic modeling. Journal of Physics: Conference Series, 1163 (conference 1), 1-7, [012025]. (doi:10.1088/1742-6596/1163/1/012025).

Boukhers, Zeyd, Ambhore, Shriharsh and Staab, Steffen (2019) An end-to-end approach for extracting and segmenting high-variance references from PDF documents. ACM/IEEE Joint Conference on Digital Libraries, United States. 02 - 05 Jun 2019. pp. 186-195 . (doi:10.1109/JCDL.2019.00035).

Menges, Raphael, Kumar, Chandan and Staab, Steffen (2019) Improving user experience of eye tracking-based interaction: Introspecting and adapting interfaces. ACM Transactions on Computer-Human Interaction, 26 (6), 1-46, [37]. (doi:10.1145/3338844).

Leinberger, Martin, Seifer, Philipp, Schon, Claudia, Lämmel, Ralf and Staab, Steffen (2019) Type checking program code using SHACL. Ghidini, Chiara, Hartig, Olaf, Maleshkova, Maria, Svátek, Vojtěch, Cruz, Isabel, Hogan, Aidan, Song, Jie, Lefrançois, Maxime and Gandon, Fabien (eds.) In The Semantic Web – ISWC 2019. vol. 11778, Springer. 399 pp . (doi:10.1007/978-3-030-30793-6_23).

Lohr, Matthias, Hund, Jonathan, Jürjens, Jan and Staab, Steffen (2019) Ensuring genuineness for selectively disclosed confidential data using distributed ledgers: Applications to rail wayside monitoring. 2nd IEEE International Conference on Blockchain, United States. 14 - 17 Jul 2019.

Kumar, Chandan, Akbari, Daniyal, Menges, Raphael, MacKenzie, Scott and Staab, Steffen (2019) TouchGazePath: Multimodal interaction with touch and gaze path for secure yet efficient PIN entry. In ICMI ’19, October 14-18, 2019, Suzhou, China. ACM. 8 pp . (doi:10.1145/3340555.3353734).

Kügler, Patricia, Schon, Claudia, Schleich, Benjamin, Staab, Steffen and Wartzack, Sandro (2019) Cascading forgetting in product development – challenges and evaluation. The 22nd International Conference on Engineering Design, Netherlands. 05 - 08 Aug 2019. (In Press)

Seifer, Philipp, Härtel, Johannes, Leinberger, Martin, Lämmel, Ralf and Staab, Steffen (2019) Empirical study on the usage of graph query languages in open source Java projects. 12th ACM SIGPLAN International Conference on Software Language Engineering (SLE 2019), Greece. 20 - 25 Oct 2019. 15 pp . (In Press)

Kumar, Chandan, Hedeshy, Ramin, MacKenzie, Scott and Staab, Steffen (2020) TAGSwipe: Touch Assisted Gaze Swipe for Text Entry. Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems,, United States. 25 - 30 Apr 2020. 12 pp . (In Press)

Ramadan, Qusai, Strüber, Daniel, Salnitri, Mattia, Jürjens, Jan, Riediger, Volker and Staab, Steffen (2020) A semi-automated BPMN-based framework for detecting conflicts between security, data-minimization and fairness requirements. Software and Systems Modeling. (doi:10.1007/s10270-020-00781-x).

Sengupta, Korok, Bhattarai, Sabin, Sarcar, Sayan, MacKenzie, Scott and Staab, Steffen (2020) Leveraging error correction in voice-based text entry by Talk-and-Gaze. Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems,, United States. 25 - 30 Apr 2020. pp. 1-11 . (doi:10.1145/3313831.3376579).

Ntoutsi, Eirini, Fafalios, Pavlos, Gadiraju, Ujwal, Iosifidis, Vasileios, Nejdl, Wolfgang, Vidal, Maria-Esther, Ruggieri, Salvatore, Turini, Franco, Papadopoulos, Symeon, Krasanakis, Emmanouil, Kompatsiaris, Ioannis, Kinder-Kurlanda, Katharina, Wagner, Claudia, Karimi, Fariba, Fernández, Miriam, Alani, Harith, Berendt, Bettina, Krügel, Tina, Heinze, Christian, Broelemann, Klaus, Kasneci, Gjergji, Tiropanis, Thanassis and Staab, Steffen (2020) Bias in data‐driven artificial intelligence systems: An introductory survey. WIREs Data Mining and Knowledge Discovery, 1-14, [e1356]. (doi:10.1002/widm.1356).

Sun, Jun, Medo, Matus and Staab, Steffen (2020) Time-invariant degree growth in preferential attachment network models. Physical Review E, 101, [022309]. (doi:10.1103/PhysRevE.101.022309).

Schneider, Rudolf, Oberhauser, Tom, Grundmann, Paul, Gers, Felix Alexander, Löser, Alexander and Staab, Steffen (2020) Is language modeling enough? Evaluating effective embedding combinations. Proceedings of the 12th International Conference on Language Resources and Evaluation, France. 11 - 16 May 2020. (In Press)

Hogan, Aidan, Blomqvist, Eva, Cochez, Michael, d'Amato, Claudia, de Melo, Gerard, Gutierrez, Claudio, Labra Gayo, Jose Emilio, Kirrane, Sabrina, Neumaier, Sebastian, Polleres, Axel, Navigli, Roberto, Ngonga Ngomo, Axel-Cyrille, Rashid, Sabbir M., Rula, Anisa, Schmelzeisen, Lukas, Sequeda, Juan, Staab, Steffen and Zimmermann, Antoine (2020) Knowledge graphs 131pp.

Koltsov, Sergei, Ignatenko, Vera, Boukhers, Zeyd and Staab, Steffen (2020) Analyzing the influence of hyper-parameters and regularizers of topic modeling in terms of Renyi entropy. Entropy, 22 (4), 394. (doi:10.3390/e22040394).

Janke, Daniel, Staab, Steffen and Leinberger, Martin (2020) Data placement strategies that speed-up distributed graph query processing. International Workshop on Semantic Big Data @ ACM SIGMOD 2020, United States. 19 Jun 2020. (In Press)

Menges, Raphael, Kramer, Sophia, Hill, Stefan, Nisslmüller, Marius, Kumar, Chandan and Staab, Steffen (2020) A visualization tool for eye tracking data analysis in the web. Bulling, Andreas, Huckauf, Anke, Jain, Eakta, Radach, Ralph and Weiskopf, Daniel (eds.) In ETRA '20 Short Papers: ACM Symposium on Eye Tracking Research and Applications. ACM. pp. 1-5 . (doi:10.1145/3379156.3391831).

Rienstra, Tjitze, Schon, Claudia and Staab, Steffen (2020) Concept contraction in the description logic EL. Principles of Knowledge Representation and Reasoning: Proceedings of the Seventeenth International Conference, KR 2020, Greece. 12 - 18 Sep 2020. (In Press)

Homburg, Timo, Staab, Steffen and Janke, Daniel (2020) GeoSPARQL+: Syntax, semantics and system for integrated querying of graph, raster and vector data. 19th International Semantic Web Conference, Virtual Event, Greece. 02 - 06 Nov 2020. (In Press)

Leinberger, Martin, Seifer, Philipp, Rienstra, Tjitze, Lämmel, Ralf and Staab, Steffen (2020) Deciding SHACL shape containment through description logics reasoning. 19th International Semantic Web Conference, Virtual Event, Greece. 02 - 06 Nov 2020. (In Press)


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