Steffen Lehnert
Dr. rer. nat.

E-Mail: steffen.lehnert[at]


Research interests

  • Software evolution
  • Change impact analysis
  • Program comprehension and software visualization
  • Dependency relations between software artifacts
  • Correlation of software architecture and source code


12/2010 - 07/2015 PhD studies at the Software Engineering and Construction Methods Group, University of Hamburg
04/2013 - 03/2015 Research Assistant at the Biosignal Processing Group, Ilmenau University of Technology
10/2005 - 11/2010 Studies of Computer Science, Ilmenau University of Technology

Research projects


EMFTrace – a repository for comprehensive model integration and inter and intra model dependency detection through traceability links. The main goal is to identify dependencies between models of different development stages and modeling languages, such as requirements and design. The project is based on Eclipse and the Eclipse Modeling Framework (EMF) and is implemented as an extension to the EMFStore repository.

Duration: May 2010 - July 2015

Telemedicine Platform for Thuringia

The joint research project constitutes the initial phase of establishing a scalable and generic telemedicine platform for Thuringia. The main goals are to outline the basic concepts of a telemedicine application for healthcare providers in Thuringia and to verify them for chosen treatments of dementia patients.

Duration: September 2012 – March 2015

Student topics

Topics for student theses

Currently there are no topics available.

Topics for graduate seminars

Currently there are no topics available.



Steffen Lehnert: Multiperspective Change Impact Analysis to Support Software Maintenance and Reengineering. PhD Thesis, University of Hamburg, July, 2015.

Kutaiba Saleh, Danny Ammon, Steffen Lehnert, Sebastian Röhr, Vesselin Detschew, Martin Specht, Andreas Henkel, André Kaeding: An IHE-conform Telecooperation Platform Supporting the Treatment of Dementia Patients. To appear in: Current Directions in Biomedical Engineering, De Gruyter, 2015.

Danny Ammon, Kutaiba Saleh, Steffen Lehnert, Sebastian Röhr, Martin Specht, Andreas Henkel, André Kaeding, Vesselin Detschew: Application of Communication and Document Standards for a Networked Medication Management in Multidisciplinary Gerontopsychiatric Care. In: TELEMED 2015 - 20. Nationales Forum für Gesundheitstelematik und Telemedizin, Berlin, Germany, July 23-24, 2015.


Christina Pahl, Mojtaba Zare, Asmawi Bin Ahmad, Vesselin Detschew, Danny Ammon, Steffen Lehnert, Eko Supriyanto: Identification of Quality Parameters for an E-Health Platform in the Federal State of Thuringia in Germany. In: Journal of Soft Computing and Decision Support Systems, Vol 1, No 1 (2014), pp. 17-23.

Danny Ammon, Sebastian Röhr, Kutaiba Saleh, Steffen Lehnert, Martin Specht, André Kaeding, Vesselin Detschew: Entwicklung einer skalierbaren und generischen Client/Server-Architektur für Telekooperation in der Gerontopsychiatrie Thüringens. In: 59. Jahrestagung der Deutschen Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie e.V. (GMDS2014), Göttingen, Germany, September 7-10, 2014.

Sebastian Gerdes, Steffen Lehnert, Matthias Riebisch: Combining Architectural Design Decisions and Legacy System Evolution. In: 8th European Conference on Software Architecture (ECSA2014), Viena, Austria, August 25-29, 2014, pp. 50-57.

Qurat-Ul-Ann Farooq, Steffen Lehnert, Matthias Riebisch: Analyzing Model Dependencies for Rule-based Regression Test Selection. In: Modellierung 2014, Viena, Austria, March 19-21, 2014, pp. 305-320.


Steffen Lehnert, Qurat-Ul-Ann Farooq, Matthias Riebisch: Rule-based Impact Analysis for Heterogeneous Software Artifacts. In: 17th European Conference on Software Maintenance and Reengineering (CSMR2013), Genova, Italy, March 5-8, 2013, pp. 209-218.


Patrick Rempel, Steffen Lehnert, Tobias Kuschke, Qurat-Ul-Ann Farooq: A Framework for Traceability Tool Comparison. In: Workshop on Traceability and Evolution within Architekturen 2012, Paderborn, Germany, July 2-3, Softwaretechnik-Trends 32(3), 2012, pp. 6-11.

Steffen Lehnert, Matthias Riebisch: Tackling the Challenges of Evolution in Multiperspective Software Design and Implementation. In: 4th Workshop on Design for Future (DFF2012) and the 14th on Workshop Software Reengineering (WSR), Bad Honnef, Germany, May 2-4, Softwaretechnik-Trends 32(2), 2012, pp. 27-28.

Steffen Lehnert, Qurat-Ul-Ann Farooq, Matthias Riebisch: A Taxonomy of Change Types and its Application in Software Evolution. In: Proceedings of the 19th IEEE International Conference on Engineering of Computer-Based Systems (ECBS2012), Novi Sad, Serbia, April 11-13, 2012, pp. 98-107.


Steffen Lehnert: A Review of Software Change Impact Analysis. Technical Report, Ilmenau University of Technology, Department of Software Systems / Process Informatics, Ilmenau, Germany, December, 2011.

Steffen Lehnert: A Taxonomy for Software Change Impact Analysis. In: Proceedings of 12th International Workshop on Principles of Software Evolution and the 7th annual ERCIM Workshop on Software Evolution, Szeged, Hungary, September 5-6, 2011, pp. 41-50.

Matthias Riebisch, Stephan Bode, Qurat-Ul-Ann Farooq, Steffen Lehnert: Towards Comprehensive Modelling by Inter-Model Links Using an Integrating Repository. In: Proceedings 8th IEEE Workshop on Model-Based Development for Computer-Based Systems - Covering Domain and Design Knowledge in Models within the 18th IEEE International Conference on Engineering of Computer-Based Systems (ECBS2011), Las Vegas, April 27-29, 2011, pp. 284-291.

Stephan Bode, Steffen Lehnert, Matthias Riebisch: Comprehensive Model Integration for Dependency Identification with EMFTrace. In: Joint Proceedings of the First International Workshop on Model-Driven Software Migration (MDSM 2011) and the Fifth International Workshop on Software Quality and Maintainability (SQM 2011), Workshops at the 15th European Conference on Software Maintenance and Reengineering (CSMR), Oldenburg, Germany, March 1, 2011, pp. 17–20.


Steffen Lehnert: Softwarearchitectural Design and Realization of a Repository for Comprehensive Model Traceability. Diploma thesis, Ilmenau University of Technology, November, 2010.