Dr. Steffen Lohmann

Dr. Steffen Lohmann left SDA for a position at the BmBF. The profile below reflects the status at the point of his departure and is no longer updated.

Senior Researcher
Enterprise Information System
Fraunhofer IAIS

Profiles: Google Scholar, DBLP

Room B3-226
Schloss Birlinghoven, 53757 Sankt Augustin, Germany

steffen.lohmann@iais.fraunhofer.de

Short CV


Dr. Steffen Lohmann is head of department Enterprise Information Systems at Fraunhofer Institute for Intelligent Analysis and Information Systems IAIS and associated member of the Smart Data Analytics group of the University of Bonn. His main research areas include Semantic Technologies, Knowledge Engineering, Data Integration and Information Visualization. At Fraunhofer IAIS, he is heading the business unit on Enterprise Information Integration concerned with research and development in areas such as Industry 4.0, Internet of Things, Enterprise Knowledge Graphs, and Smart Data Integration. Steffen holds BSc and MSc degrees in Applied Communication and Media Science and a PhD in Computer Science. He is co-author of more than 100 peer-reviewed scientific publications, co-founder of a number of software and research projects and initiatives, has served in different functions for major international conferences and journals, is an active member of scientific and industrial committees, gives talks and consultancy, and organizes events in the above topic areas.

Research Interests


  • Semantic Technologies
  • Knowledge Engineering
  • Data Integration
  • Information Visualization

Projects


Publications

125 entries « 2 of 3 »

2015

Haag, Florian; Lohmann, Steffen; Siek, Stephan; Ertl, Thomas

QueryVOWL: Visual Composition of SPARQL Queries Inproceedings

In: The Semantic Web: ESWC 2015 Satellite Events - ESWC 2015 Satellite Events Portorov z, Slovenia, May 31 - June 4, 2015, Revised Selected Papers, pp. 62–66, Springer, 2015.

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Haag, Florian; Lohmann, Steffen; Siek, Stephan; Ertl, Thomas

QueryVOWL: A Visual Query Notation for Linked Data Inproceedings

In: The Semantic Web: ESWC 2015 Satellite Events - ESWC 2015 Satellite Events Portorov z, Slovenia, May 31 - June 4, 2015, Revised Selected Papers, pp. 387–402, Springer, 2015.

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Haag, Florian; Lohmann, Steffen; Siek, Stephan; Ertl, Thomas

Visual Querying of Linked Data with QueryVOWL Inproceedings

In: Joint Proceedings of the 1st International Workshop on Summarizing and Presenting Entities and Ontologies and the 3rd International Workshop on Human Semantic Web Interfaces (SumPre 2015, HSWI 2015) co-located with the 12th Extended Semantic Web Conference (ESWC 2015), Portoroz, Slovenia, June 1, 2015, CEUR-WS.org, 2015.

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Lohmann, Steffen; Heimerl, Florian; Bopp, Fabian; Burch, Michael; Ertl, Thomas

Concentri Cloud: Word Cloud Visualization for Multiple Text Documents Inproceedings

In: 19th International Conference on Information Visualisation, IV 2015, Barcelona, Spain, July 22-24, 2015, pp. 114–120, IEEE Computer Society, 2015.

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Lohmann, Steffen; Haag, Florian; Negru, Stefan

Towards a Visual Notation for OWL: A Brief Summary of VOWL Inproceedings

In: Ontology Engineering - 12th International Experiences and Directions Workshop on OWL, OWLED 2015, co-located with ISWC 2015, Bethlehem, PA, USA, October 9-10, 2015, Revised Selected Papers, pp. 143–153, Springer, 2015.

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Burch, Michael; Lohmann, Steffen

Visualizing the Evolution of Ontologies: A Dynamic Graph Perspective Inproceedings

In: Proceedings of the International Workshop on Visualizations and User Interfaces for Ontologies and Linked Data co-located with 14th International Semantic Web Conference (ISWC 2015), Bethlehem, Pennsylvania, USA, October 11, 2015, pp. 69, CEUR-WS.org, 2015.

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Dasiopoulou, Stamatia; Lohmann, Steffen; Codina, Joan; Wanner, Leo

Representing and Visualizing Text as Ontologies: A Case from the Patent Domain Inproceedings

In: Proceedings of the International Workshop on Visualizations and User Interfaces for Ontologies and Linked Data co-located with 14th International Semantic Web Conference (ISWC 2015), Bethlehem, Pennsylvania, USA, October 11, 2015, pp. 83, CEUR-WS.org, 2015.

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2014

Haag, Florian; Lohmann, Steffen; Bold, Steffen; Ertl, Thomas

Visual SPARQL querying based on extended filter/flow graphs Inproceedings

In: International Working Conference on Advanced Visual Interfaces, AVI 2014, Como, Italy, May 27-29, 2014, pp. 305–312, ACM, 2014.

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Haag, Florian; Lohmann, Steffen; Negru, Stefan; Ertl, Thomas

OntoViBe: An Ontology Visualization Benchmark Inproceedings

In: Proceedings of the International Workshop on Visualizations and User Interfaces for Knowledge Engineering and Linked Data Analytics co-located with 19th International Conference on Knowledge Engineering and Knowledge Management, VISUAL@EKAW 2014, Linköping, Sweden, November 24, 2014, pp. 14–27, CEUR-WS.org, 2014.

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Haag, Florian; Lohmann, Steffen; Negru, Stefan; Ertl, Thomas

OntoViBe 2: Advancing the Ontology Visualization Benchmark Inproceedings

In: Knowledge Engineering and Knowledge Management - EKAW 2014 Satellite Events, VISUAL, EKM1, and ARCOE-Logic, Linköping, Sweden, November 24-28, 2014. Revised Selected Papers, pp. 83–98, Springer, 2014.

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Ivanova, Valentina; Kauppinen, Tomi; Lohmann, Steffen; Mazumdar, Suvodeep; Pesquita, Catia; Xu, Kai

Introduction to VISUAL 2014 - Workshop on Visualizations and User Interfaces for Knowledge Engineering and Linked Data Analytics Inproceedings

In: Knowledge Engineering and Knowledge Management - EKAW 2014 Satellite Events, VISUAL, EKM1, and ARCOE-Logic, Linköping, Sweden, November 24-28, 2014. Revised Selected Papers, pp. 80–82, Springer, 2014.

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Lohmann, Steffen; Link, Vincent; Marbach, Eduard; Negru, Stefan

WebVOWL: Web-based Visualization of Ontologies Inproceedings

In: Knowledge Engineering and Knowledge Management - EKAW 2014 Satellite Events, VISUAL, EKM1, and ARCOE-Logic, Linköping, Sweden, November 24-28, 2014. Revised Selected Papers, pp. 154–158, Springer, 2014.

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Lohmann, Steffen; Negru, Stefan; Haag, Florian; Ertl, Thomas

VOWL 2: User-Oriented Visualization of Ontologies Inproceedings

In: Knowledge Engineering and Knowledge Management - 19th International Conference, EKAW 2014, Linköping, Sweden, November 24-28, 2014. Proceedings, pp. 266–281, Springer, 2014.

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Haag, Florian; Lohmann, Steffen; Ertl, Thomas

SparqlFilterFlow: SPARQL Query Composition for Everyone Inproceedings

In: The Semantic Web: ESWC 2014 Satellite Events - ESWC 2014 Satellite Events, Anissaras, Crete, Greece, May 25-29, 2014, Revised Selected Papers, pp. 362–367, Springer, 2014.

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Lohmann, Steffen; Negru, Stefan; Bold, David

The ProtégéVOWL Plugin: Ontology Visualization for Everyone Inproceedings

In: The Semantic Web: ESWC 2014 Satellite Events - ESWC 2014 Satellite Events, Anissaras, Crete, Greece, May 25-29, 2014, Revised Selected Papers, pp. 395–400, Springer, 2014.

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Heimerl, Florian; Lohmann, Steffen; Lange, Simon; Ertl, Thomas

Word Cloud Explorer: Text Analytics Based on Word Clouds Inproceedings

In: 47th Hawaii International Conference on System Sciences, HICSS 2014, Waikoloa, HI, USA, January 6-9, 2014, pp. 1833–1842, IEEE Computer Society, 2014.

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Burch, Michael; Lohmann, Steffen; Beck, Fabian; Rodriguez, Nils; Silvestro, Lorenzo Di; Weiskopf, Daniel

RadCloud: Visualizing Multiple Texts with Merged Word Clouds Inproceedings

In: 18th International Conference on Information Visualisation, IV 2014, Paris, France, July 16-18, 2014, pp. 108–113, IEEE Computer Society, 2014.

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Herr, Dominik; Han, Qi; Lohmann, Steffen; Brügmann, Sören; Ertl, Thomas

Visual Exploration of Patent Collections with IPC Clouds Inproceedings

In: Proceedings of the First International Workshop on Patent Mining and Its Applications (IPaMin 2014) co-located with Konvens 2014, Hildesheim, Germany, October 6-7, 2014, CEUR-WS.org, 2014.

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2013

Haag, Florian; Lohmann, Steffen; Ertl, Thomas

Evaluating the readability of extended filter/flow graphs Inproceedings

In: Graphics Interface 2013, GI '13, Regina, SK, Canada, May 29-31, 2013, Proceedings, pp. 33–36, Canadian Information Processing Society / ACM, 2013.

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Negru, Stefan; Haag, Florian; Lohmann, Steffen

Towards a unified visual notation for OWL ontologies: insights from a comparative user study Inproceedings

In: I-SEMANTICS 2013 - 9th International Conference on Semantic Systems, ISEM '13, Graz, Austria, September 4-6, 2013, pp. 73–80, ACM, 2013.

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Burch, Michael; Lohmann, Steffen; Pompe, Daniel; Weiskopf, Daniel

Prefix Tag Clouds Inproceedings

In: 17th International Conference on Information Visualisation, IV 2013, London, United Kingdom, July 16-18, 2013, pp. 45–50, IEEE Computer Society, 2013.

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Negru, Stefan; Lohmann, Steffen

A Visual Notation for the Integrated Representation of OWL Ontologies Inproceedings

In: WEBIST 2013 - Proceedings of the 9th International Conference on Web Information Systems and Technologies, Aachen, Germany, 8-10 May, 2013, pp. 308–315, SciTePress, 2013.

BibTeX

2012

Lohmann, Steffen; Burch, Michael; Schmauder, Hansjörg; Weiskopf, Daniel

Visual analysis of microblog content using time-varying co-occurrence highlighting in tag clouds Inproceedings

In: International Working Conference on Advanced Visual Interfaces, AVI 2012, Capri Island, Naples, Italy, May 22-25, 2012, Proceedings, pp. 753–756, ACM, 2012.

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Lohmann, Steffen; D'iaz, Paloma

Representing and visualizing folksonomies as graphs: a reference model Inproceedings

In: International Working Conference on Advanced Visual Interfaces, AVI 2012, Capri Island, Naples, Italy, May 22-25, 2012, Proceedings, pp. 729–732, ACM, 2012.

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Wimmer, Christian; Lohmann, Steffen; Raschke, Michael; Schlegel, Thomas

Migration und Anpassung von Benutzeroberflächen für Touchscreens Inproceedings

In: Mensch & Computer 2012: interaktiv informiert - allgegenwärtig und allumfassend!? Konstanz, Germany, September 9-12, 2012, pp. 93–102, Oldenbourg Verlag, 2012.

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Haag, Florian; Lohmann, Steffen; Ertl, Thomas

Simplifying filter/flow graphs by subgraph substitution Inproceedings

In: 2012 IEEE Symposium on Visual Languages and Human-Centric Computing, VL/HCC 2012, Innsbruck, Austria, September 30 - October 4, 2012, pp. 145–148, IEEE, 2012.

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2011

Lohmann, Steffen

Learners as Metadata Source? A Three-Layer Model of Collaborative Content Annotation Incollection

In: IATEL - Interdisciplinary Approaches to Technology-enhanced Learning: Interdisziplinäre Zugänge zum technologiegestützen Lernen, pp. 279–286, Waxmann, 2011.

BibTeX

Heim, Philipp; Lohmann, Steffen; Schlegel, Thomas; Ziegler, Jürgen

Interaktion und Visualisierung im Daten-Web Inproceedings

In: 41. Jahrestagung der Gesellschaft für Informatik, Informatik schafft Communities, INFORMATIK 2011, Berlin, Germany, October 4-7, 2011, Abstract Proceedings, pp. 253–255, GI, 2011.

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Heim, Philipp; Lohmann, Steffen; Tsendragchaa, Davaadorj; Ertl, Thomas

SemLens: visual analysis of semantic data with scatter plots and semantic lenses Inproceedings

In: Proceedings the 7th International Conference on Semantic Systems, I-SEMANTICS 2011, Graz, Austria, September 7-9, 2011, pp. 175–178, ACM, 2011.

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Lohmann, Steffen; D'iaz, Paloma; Aedo, Ignacio

MUTO: the modular unified tagging ontology Inproceedings

In: Proceedings the 7th International Conference on Semantic Systems, I-SEMANTICS 2011, Graz, Austria, September 7-9, 2011, pp. 95–104, ACM, 2011.

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D'iaz, Paloma; Hussein, Tim; Lohmann, Steffen; Ziegler, Jürgen

Data-Centric Interactions on the Web Inproceedings

In: Human-Computer Interaction - INTERACT 2011 - 13th IFIP TC 13 International Conference, Lisbon, Portugal, September 5-9, 2011, Proceedings, Part IV, pp. 726–727, Springer, 2011.

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Lohmann, Steffen; Heim, Philipp; Tsendragchaa, Davaadorj; Ertl, Thomas

Visuelle Analyse von RDF-Daten mittels semantischer Linsen Inproceedings

In: Mensch & Computer 2011: überMEDIENtextbackslash(vert textbackslash)ÜBERmorgen - 11. fachübergreifende Konferenz für interaktive und kooperative Medien, Chemnitz, Germany, September 11-14, 2011, pp. 283–287, Oldenbourg Verlag, 2011.

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2010

Tomanek, Katrin; Hahn, Udo; Lohmann, Steffen; Ziegler, Jürgen

A Cognitive Cost Model of Annotations Based on Eye-Tracking Data Inproceedings

In: ACL 2010, Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics, July 11-16, 2010, Uppsala, Sweden, pp. 1158–1167, The Association for Computer Linguistics, 2010.

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Budweg, Steffen; Draxler, Sebastian; Lohmann, Steffen; Rashid, Asarnusch; Stevens, Gunnar

Open design spaces: socially crafting interactive experiences Inproceedings

In: Proceedings of the Conference on Designing Interactive Systems, Aarhus, Denmark, August 16-20, 2010, pp. 442–443, ACM, 2010.

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Harrer, Andreas; Lohmann, Steffen; Rensing, Christoph; Schroeder, Ulrik

Vorwort Inproceedings

In: Lernen im Digitalen Zeitalter Workshop-Band Dokumentation der Pre-Conference zur DeLFI2009 - Die 7. E-Learning Fachtagung Informatik der Gesellschaft für Informatik e.V., Freie Universität Berlin, 14.-17. September 2009, pp. 12, Logos Verlag, 2010.

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Heim, Philipp; Lohmann, Steffen; Stegemann, Timo

Interactive Relationship Discovery via the Semantic Web Inproceedings

In: The Semantic Web: Research and Applications, 7th Extended Semantic Web Conference, ESWC 2010, Heraklion, Crete, Greece, May 30 - June 3, 2010, Proceedings, Part I, pp. 303–317, Springer, 2010.

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Lohmann, Steffen; Heim, Philipp; D'iaz, Paloma

Exploiting the Semantic Web for Interactive Relationship Discovery in Technology Enhanced Learning Inproceedings

In: ICALT 2010, 10th IEEE International Conference on Advanced Learning Technologies, Sousse, Tunisia, 5-7 July 2010, pp. 302–306, IEEE Computer Society, 2010.

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Lohmann, Steffen; Heim, Philipp; Stegemann, Timo; Ziegler, Jürgen

The RelFinder user interface: interactive exploration of relationships between objects of interest Inproceedings

In: Proceedings of the 15th International Conference on Intelligent User Interfaces, IUI 2010, Hong Kong, China, February 7-10, 2010, pp. 421–422, ACM, 2010.

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Lohmann, Steffen; Riechert, Thomas

Adding Semantics to Social Software Engineering: (Re-)Using Ontologies in a Community-oriented Requirements Engineering Environment Inproceedings

In: Software Engineering 2010 - Workshopband (inkl. Doktorandensymposium), Fachtagung des GI-Fachbereichs Softwaretechnik, 22.-26.02.2010, Paderborn, pp. 485–494, GI, 2010.

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2009

Lohmann, Steffen; Ziegler, Jürgen; Tetzlaff, Lena

Comparison of Tag Cloud Layouts: Task-Related Performance and Visual Exploration Inproceedings

In: Human-Computer Interaction - INTERACT 2009, 12th IFIP TC 13 International Conference, Uppsala, Sweden, August 24-28, 2009, Proceedings, Part I, pp. 392–404, Springer, 2009.

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Budweg, Steffen; Draxler, Sebastian; Lohmann, Steffen; Rashid, Asarnusch; Stevens, Gunnar

Open Design Spaces (ODS) - Innovation durch Nutzerbeteiligung - Inproceedings

In: Workshop-Proceedings der Tagung Mensch & Computer 2009, Berlin, Germany, September 6-9, 2009, pp. 31–35, Logos Verlag, 2009.

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Heim, Philipp; Stegemann, Timo; Lohmann, Steffen; Ziegler, Jürgen

Interaktive Informationsextraktion aus Dokumentenmengen Inproceedings

In: Mensch & Computer 2009: Grenzenlos frei!?, Interdisziplinäre Fachtagung, Berlin, Germany, September 6-9, 2009, pp. 415–418, Oldenbourg Verlag, 2009.

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Lohmann, Steffen; Ziegler, Jürgen; Tetzlaff, Lena

Ein Blick in die Wolken: Visuelle Exploration von Tag Clouds Inproceedings

In: Mensch & Computer 2009: Grenzenlos frei!?, Interdisziplinäre Fachtagung, Berlin, Germany, September 6-9, 2009, pp. 303–312, Oldenbourg Verlag, 2009.

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Heim, Philipp; Hellmann, Sebastian; Lehmann, Jens; Lohmann, Steffen; Stegemann, Timo

RelFinder: Revealing Relationships in RDF Knowledge Bases Inproceedings

In: Semantic Multimedia, 4th International Conference on Semantic and Digital Media Technologies, SAMT 2009, Graz, Austria, December 2-4, 2009, Proceedings, pp. 182–187, Springer, 2009.

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Lohmann, Steffen; Heim, Philipp; Tetzlaff, Lena; Ertl, Thomas; Ziegler, Jürgen

Exploring Relationships between Annotated Images with the ChainGraph Visualization Inproceedings

In: Semantic Multimedia, 4th International Conference on Semantic and Digital Media Technologies, SAMT 2009, Graz, Austria, December 2-4, 2009, Proceedings, pp. 16–27, Springer, 2009.

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Hannemann, Anna; Happel, Hans-Jörg; Jarke, Matthias; Klamma, Ralf; Lohmann, Steffen; Maalej, Walid; Wulf, Volker

Social Aspects in Software Engineering Inproceedings

In: Software Engineering 2009 - Workshopband, Fachtagung des GI-Fachbereichs Softwaretechnik 02.-06.03.2009 in Kaiserslautern, pp. 239–242, GI, 2009.

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Happel, Hans-Jörg; Lohmann, Steffen; Maalej, Walid

Collaboration and Knowledge Sharing in Software Development Teams (SOFTEAM 2009) Inproceedings

In: Software Engineering 2009: Fachtagung des GI-Fachbereichs Softwaretechnik 02.-06.03. 2009 in Kaiserslautern, pp. 209–210, GI, 2009.

BibTeX

Lohmann, Steffen; Dietzold, Sebastian; Heim, Philipp; Heino, Norman

A Web Platform for Social Requirements Engineering Inproceedings

In: Software Engineering 2009 - Workshopband, Fachtagung des GI-Fachbereichs Softwaretechnik 02.-06.03.2009 in Kaiserslautern, pp. 309–315, GI, 2009.

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Lohmann, Steffen; Heim, Philipp; Stegemann, Timo; Tetzlaff, Lena; Ziegler, Jürgen

Entdecken und Explorieren von Zusammenhängen im Semantic Web (Discovering and Exploring Relationships in the Semantic Web) Journal Article

In: i-com, vol. 8, no. 3, pp. 33–39, 2009.

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Ziegler, Jürgen; Lohmann, Steffen; Auer, Sören

Liebe Leserinnen und Leser! Journal Article

In: i-com, vol. 8, no. 3, pp. 3–4, 2009.

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125 entries « 2 of 3 »