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 The profile below reflects the status at the point of his departure and is no longer updated.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

92 entries « 1 of 2 »

2020

Elias, Mirette; Ruckhaus, Edna; Draffan, E. A.; James, Abi; Suárez-Figueroa, Mari Carmen; Lohmann, Steffen; Khiat, Abderrahmane; Auer, Sören

Accessibility and Personalization in OpenCourseWare : An Inclusive Development Approach Inproceedings

In: 20th IEEE International Conference on Advanced Learning Technologies, ICALT 2020, Tartu, Estonia, July 6-9, 2020, pp. 279–283, IEEE, 2020.

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Elias, Mirette; Tavakoli, MohammadReza; Lohmann, Steffen; Kismihók, Gábor; Auer, Sören

An OER Recommender System Supporting Accessibility Requirements Inproceedings

In: ASSETS '20: The 22nd International ACM SIGACCESS Conference on Computers and Accessibility, Virtual Event, Greece, October 26-28, 2020, pp. 57:1–57:4, ACM, 2020.

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Wiens, Vitalis; Lohmann, Steffen

Demonstration of a Customizable Knowledge Graph Visualization Framework Inproceedings

In: Proceedings of the ISWC 2020 Demos and Industry Tracks: From Novel Ideas to Industrial Practice co-located with 19th International Semantic Web Conference (ISWC 2020), Globally online, November 1-6, 2020 (UTC), pp. 104–109, CEUR-WS.org, 2020.

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2019

Wiens, Vitalis; Galkin, Mikhail; Lohmann, Steffen; Auer, Sören

Demonstration of a Customizable Representation Model for Graph-Based Visualizations of Ontologies -- GizMO Inproceedings

In: ISWC 2019 Posters and Demos, 2019.

BibTeX

Ivanova, Valentina; Lambrix, Patrick; Lohmann, Steffen; Pesquita, Catia

Visualization and interaction for ontologies and linked data - Editorial Journal Article

In: J. Web Semant., 55 , pp. 145–149, 2019.

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2018

Pesquita, Catia; Ivanova, Valentina; Lohmann, Steffen; Lambrix, Patrick

A Framework to Conduct and Report on Empirical User Studies in Semantic Web Contexts Inproceedings

In: Knowledge Engineering and Knowledge Management - 21st International Conference, EKAW 2018, Nancy, France, November 12-16, 2018, Proceedings, pp. 567–583, Springer, 2018.

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John, Markus; Marbach, Eduard; Lohmann, Steffen; Heimerl, Florian; Ertl, Thomas

MultiCloud: Interactive Word Cloud Visualization for the Analysis of Multiple Texts Inproceedings

In: Proceedings of the 44th Graphics Interface Conference, Toronto, Canada, May 8-11, 2018, pp. 34–41, ACM, 2018.

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Faizan, Ainuddin; Lohmann, Steffen

Automatic Generation of Multiple Choice Questions from Slide Content using Linked Data Inproceedings

In: Proceedings of the 8th International Conference on Web Intelligence, Mining and Semantics, WIMS 2018, Novi Sad, Serbia, June 25-27, 2018, pp. 32:1–32:8, ACM, 2018.

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Dudás, Marek; Lohmann, Steffen; Svátek, Vojtech; Pavlov, Dmitry

Ontology visualization methods and tools: a survey of the state of the art Journal Article

In: Knowledge Eng. Review, 33 , pp. e10, 2018.

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2017

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

Hierarchy-based projection of high-dimensional labeled data to reduce visual clutter Journal Article

In: Comput. Graph., 62 , pp. 28–40, 2017.

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2016

Petersen, Niklas; Galkin, Michael; Lange, Christoph; Lohmann, Steffen; Auer, Sören

Monitoring and Automating Factories Using Semantic Models Inproceedings

In: Semantic Technology - 6th Joint International Conference, JIST 2016, Singapore, Singapore, November 2-4, 2016, Revised Selected Papers, pp. 315–330, Springer, 2016.

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Meyer, Matthias; Beck, Fabian; Lohmann, Steffen

Visual monitoring of process runs: An application study for stored procedures Inproceedings

In: 2016 IEEE Pacific Visualization Symposium, PacificVis 2016, Taipei, Taiwan, April 19-22, 2016, pp. 160–167, IEEE Computer Society, 2016.

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Weise, Marc; Lohmann, Steffen; Haag, Florian

Extraction and Visualization of TBox Information from SPARQL Endpoints Inproceedings

In: Knowledge Engineering and Knowledge Management - 20th International Conference, EKAW 2016, Bologna, Italy, November 19-23, 2016, Proceedings, pp. 713–728, 2016.

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

Visual Clutter Reduction through Hierarchy-based Projection of High-dimensional Labeled Data Inproceedings

In: Proceedings of the 42nd Graphics Interface Conference, Victoria, BC, Canada, 1-3 June 2016, pp. 109–116, ACM, 2016.

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John, Markus; Lohmann, Steffen; Koch, Steffen; Wörner, Michael; Ertl, Thomas

Visual Analysis of Character and Plot Information Extracted from Narrative Text Inproceedings

In: Computer Vision, Imaging and Computer Graphics Theory and Applications - 11th International Joint Conference, VISIGRAPP 2016, Rome, Italy, February 27-29, 2016, Revised Selected Papers, pp. 220–241, Springer, 2016.

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John, Markus; Lohmann, Steffen; Koch, Steffen; Wörner, Michael; Ertl, Thomas

Visual Analytics for Narrative Text - Visualizing Characters and their Relationships as Extracted from Novels Inproceedings

In: Proceedings of the 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2016) - Volume 2: IVAPP, Rome, Italy, February 27-29, 2016, pp. 29–40, SciTePress, 2016.

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Ivanova, Valentina; Lambrix, Patrick; Lohmann, Steffen; Pesquita, Catia

Workshop Summary Inproceedings

In: Proceedings of the Second International Workshop on Visualization and Interaction for Ontologies and Linked Data co-located with the 15th International Semantic Web Conference, VOILA@ISWC 2016, Kobe, Japan, October 17, 2016, pp. 1–4, CEUR-WS.org, 2016.

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Link, Vincent; Lohmann, Steffen; Haag, Florian

OntoBench: Generating Custom OWL 2 Benchmark Ontologies Inproceedings

In: The Semantic Web - ISWC 2016 - 15th International Semantic Web Conference, Kobe, Japan, October 17-21, 2016, Proceedings, Part II, pp. 122–130, 2016.

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Weise, Marc; Lohmann, Steffen; Haag, Florian

LD-VOWL: Extracting and Visualizing Schema Information for Linked Data Endpoints Inproceedings

In: Proceedings of the Second International Workshop on Visualization and Interaction for Ontologies and Linked Data co-located with the 15th International Semantic Web Conference, VOILA@ISWC 2016, Kobe, Japan, October 17, 2016, pp. 120–127, CEUR-WS.org, 2016.

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

Visualizing ontologies with VOWL Journal Article

In: Semantic Web, 7 (4), pp. 399–419, 2016.

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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: Informatik 2011: Informatik schafft Communities, Beiträge der 41. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 4.-7.10.2011, Berlin, Deutschland (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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92 entries « 1 of 2 »