Dipl.-Inf. Michael Hahn

Research Associate and Ph.D. Student

Adress: Institute of Architecture of Application Systems
Universitätsstraße 38
70569 Stuttgart
Germany
Phone: +49 (0)711 685-88 416
Fax: +49 (0)711 685-88 472
Room: 1st floor, Room 1.136
Office Hours: By arrangement
E-Mail: michael.hahn(at)iaas.uni-stuttgart.de
Michael Hahn

Projects


SimTech

Stuttgart Research Centre for Simulation Technology and Cluster of Excellence „Simulation Technology“: The SimTech project is developing scientific methods and applications in the different fields of modeling and simulation science. Within SimTech, the Institute of Architecture of Application Systems is concerned with the development of a workflow management system that is tailored to the requirements and needs of scientists. This system forms a platform for workflow-based automation of simulations considering increased flexibility and ease of use. Using this platform, simulation workflows can efficiently be modeled, executed, adapted, monitored and analyzed. One fundamental goal in the development of this system lies in hiding the technical complexity underlying the different phases of workflow-based automation of a simulation.



TraDE

A Transparent Data Exchange (TraDE) middleware for service choreographies.



SCEMT

A Multi-tenant Service Composition Engine



ODE-PGF

The pluggable framework for extended BPEL behavior provides a standardized BPEL event model and ways to change the engine's behavior upon receipt of an event.


Publications

To Appear

  1. Hahn, Michael; Breitenbücher, Uwe; Leymann, Frank; Weiß, Andreas: TraDE - A Transparent Data Exchange Middleware for Service Choreographies. In: R. Meersman, H. Panetto et al. (Hrsg): On the Move to Meaningful Internet Systems: OTM 2017 Conferences, 2017.

Book Chapters

  1. Gómez Sáez, Santiago; Andrikopoulos, Vasilios; Hahn, Michael; Karastoyanova, Dimka; Leymann, Frank; Skouradaki, Marigianna; Vukojevic-Haupt, Karolina: Performance and Cost Trade-Off in IaaS Environments: A Scientific Workflow Simulation Environment Case Study. In: Cloud Computing and Services Science. Vol. 581, Springer, 2016 ( pdf).

Journal Papers

  1. Hahn, Michael; Breitenbücher, Uwe; Kopp, Oliver; Leymann, Frank: Modeling and execution of data-aware choreographies: an overview. In: Computer Science - Research and Development, Springer Berlin Heidelberg, 2017 ( pdf).
  2. Weiß, Andreas; Andrikopoulos, Vasilios; Hahn, Michael; Dimka Karastoyanova: Model-as-you-go for Choreographies: Rewinding and Repeating Scientific Choreographies. In: IEEE Transactions on Services Computing. Vol. PP(99), IEEE, 2017 (pdf).

Conference Papers

  1. Weiß, Andreas; Andrikopoulos, Vasilios; Gómez Sáez, Santiago; Hahn, Michael; Karastoyanova, Dimka: ChorSystem: A Message-Based System for the Life Cycle Management of Choreographies. In: Debruyne, Christophe (ed.); Panetto, Hervé (ed.); Meersman, Robert (ed.); Dillon, Tharam (ed.); Kühn, Eva (ed.); O'Sullivan, Declan (ed.); Ardagna, Claudio Agostino (ed.): On the Move to Meaningful Internet Systems: OTM 2016 Conferences: Confederated International Conferences: CoopIS, C&TC, and ODBASE 2016, Rhodes, Greece, October 24-28, 2016, Proceedings (pdf).
  2. Hahn, Michael; Karastoyanova, Dimka; Leymann, Frank: A Management Life Cycle for Data-Aware Service Choreographies. In: Proceedings of the Twenty-Third International Conference on Web Services (ICWS 2016), San Francisco, CA, USA, 2016 ( pdf).
  3. Hahn, Michael; Karastoyanova, Dimka; Leymann, Frank: Data-Aware Service Choreographies through Transparent Data Exchange. In: Proceedings of the 16th International Conference on Web Engineering (ICWE'16), 2016 ( pdf).
  4. Andrikopoulos, Vasilios; Bitsaki, Marina; Gómez Sáez, Santiago; Hahn, Michael; Karastoyanova, Dimka; Koutras, Giorgios; Psycharaki, Alina: Evaluating the Effect of Utility-based Decision Making in Collective Adaptive Systems. In: Proceedings of the 6th International Conference on Cloud Computing and Service Science (CLOSER 2016).
  5. Gómez Sáez, Santiago; Andrikopoulos, Vasilios; Hahn, Michael; Karastoyanova, Dimka; Weiß, Andreas: Enabling Reusable and Adaptive Modeling, Provisioning & Execution of BPEL Processes. In: Proceedings of the 8th International Conference on Service-Oriented Computing and Applications (SOCA'15), 2015 ( pdf).
  6. Weiß, Andreas; Andrikopoulos, Vasilios; Hahn, Michael; Karastoyanova, Dimka: Rewinding and Repeating Scientific Choreographies. In: C. Debruyne, H. Panetto et al. (ed.): On the Move to Meaningful Internet Systems: OTM 2015 Conferences ( pdf).
  7. Weiß, Andreas; Andrikopoulos, Vasilios; Hahn, Michael; Karastoyanova, Dimka: Enabling the Extraction and Insertion of Reusable Choreography Fragments. In: Proceedings of the 22nd IEEE International Conference on Web Services, 2015 ( pdf).
  8. Gómez Sáez, Santiago; Andrikopoulos, Vasilios; Hahn, Michael; Karastoyanova, Dimka; Leymann, Frank; Skouradaki, Marigianna; Vukojevic-Haupt, Karolina: Performance and Cost Evaluation for the Migration of a Scientific Workflow Infrastructure to the Cloud. In: Proceedings of the 5th International Conference on Cloud Computing and Service Science (CLOSER 2015) ( pdf).
  9. Weiß, Andreas; Andrikopoulos, Vasilios; Hahn, Michael; Karastoyanova, Dimka: Fostering Reuse in Choreography Modeling Through Choreography Fragments. In: Proceedings of the 17th International Conference on Enterprise Information Systems ICEIS 2015 ( pdf).
  10. Skouradaki, Marigianna; Goerlach, Katharina; Hahn, Michael; Leymann, Frank: Application of Sub-Graph Isomorphism to Extract Reoccurring Structures from BPMN 2.0 Process Models. In: 9th International IEEE Symposium on Service-Oriented System Engineering : SOSE 2015; San Francisco Bay, USA, March 30 - 3, 2015 ( pdf).
  11. Hahn, Michael; Gómez Sáez, Santiago; Andrikopoulos, Vasilios; Karastoyanova, Dimka; Leymann, Frank: Development and Evaluation of a Multi-tenant Service Middleware PaaS Solution. In: Proceedings of the 7th International Conference on Utility and Cloud Computing (UCC 2014) ( pdf).
  12. Hahn, Michael; Gómez Sáez, Santiago; Andrikopoulos, Vasilios; Karastoyanova, Dimka; Leymann, Frank: SCE^MT: A Multi-tenant Service Composition Engine. In: Proceedings of the 7th International Conference on Service-Oriented Computing and Applications (SOCA'14), 2014 ( pdf).
  13. Weiß, Andreas; Gómez Sáez, Santiago; Hahn, Michael; Karastoyanova, Dimka: Approach and Refinement Strategies for Flexible Choreography Enactment. In: R. Meersman, H. Panetto et al. (ed.): 22nd International Conference on Cooperative Information Systems (CoopIS 2014) ( pdf).

Workshop Papers

  1. Hahn, Michael; Karastoyanova, Dimka: Configurable and Collaborative Scientific Workflows. In: Workshop on Simulation Technology: Systems for Data Intensive Simulations (SimTech(at)GI) in Conjunction with INFORMATIK 2014 ( pdf).
  2. Sonntag, Mirko; Hahn, Michael; Karastoyanova, Dimka: Mayflower - Explorative Modeling of Scientific Workflows with BPEL. In: Proceedings of the Demo Track of the 10th International Conference on Business Process Management (BPM 2012), CEUR Workshop Proceedings, 2012 ( pdf).
  3. Schumm, David; Dentsas, Dimitrios; Hahn, Michael; Karastoyanova, Dimka; Leymann, Frank; Sonntag, Mirko: Web Service Composition Reuse through Shared Process Fragment Libraries. In: Proceedings of the 12th International Conference on Web Engineering (ICWE 2012 Demos) ( pdf).

Diploma Thesis

  1. Hahn, Michael: Approach and Realization of a Multi-tenant Service Composition Engine, Diplomarbeit Nr. 3546, 2013 ( pdf).

Case Study

  1. Hahn, Michael; Schneidt, Michael: Vergleich von Technologien und Systemen für das Datenmanagement bei wissenschaftlichen Prozessen, Case Study Nr. 141, 2012.

Student Theses

Open Topics



If you're interested in writing your diploma or master thesis in the area of Simulation Workflows please mail me. There also may be other topics than the listed ones.

Supervised Student Works

  1. Wolter, Norman: Konzept und Implementierung für Choreographiecontainer, Master Thesis No. 9, 2015.
  2. Yasemin, Benli-Karabulut: Cloud-Dienste für Unternehmens-Datenbank, Master Thesis No. 7, 2014.
  3. Passow, Stephan: Development of a Pattern Library and a Decision Support System for Building Applications in the Domain of Scientific Workflows for e-Science, Diploma Thesis No. 3618, 2014.