Dipl.-Inf. Tobias Unger Senior IT Consultant

external staff

Research Interest

The demand for business process management and for automation of business processes increases. It turns out that not all tasks of a business process can be automated; especially processes in which a significant number of tasks have to be performed by people. Thus the concept of task management has been developed to incorporate these tasks in automated business processes. In this work we investigate in advanced task management concepts. We focus on concepts helping people organizing their work, for example a task recommendation system, since they have not found their way into state of the art workflow technology. Further information...

Further Research Interests

  • Service-orientierte Architektur (SOA)
  • Business Process Management (BPM)
  • Architektur von Anwendungssystemen
  • Web Services (WS) und verwandte Standards und Technologien
  • Service Level Agreements für Geschäftsprozesse
  • Cloud Computing

Projects

  • Local coordinator of the EU project ALLOW at the IAAS

Further Activities


Presentations

Publications

My publications listed at

Journal Papers


  1. Kopp, Oliver; Görlach, Katharina; Karastoyanova, Dimka; Leymann, Frank; Reiter, Michael; Schumm, David; Sonntag, Mirko; Strauch, Steve; Unger, Tobias; Wieland, Matthias; Khalaf, Rania: A Classification of BPEL Extensions. In: Journal of Systems Integration. Vol. 2(4), Online, 2011 (pdf).
  2. Mietzner, Ralph; Leymann, Frank; Unger, Tobias: Horizontal and Vertical Combination of Multi-Tenancy Patterns in Service-Oriented Applications. In: Special Issue: Empowering Enterprises Through Next-Generation Enterprise Computing 13th International IEEE EDOC Conference (EDOC 2009). Vol. 5(1), Taylor & Francis, 2010.
  3. Unger, Tobias; Mietzner, Ralph; Leymann, Frank: Customer-defined Service Level Agreements for Composite Applications. In: Enterprise Information Systems - Towards Model-driven Service-oriented Enterprise Computing 12th International IEEE EDOC Enterprise Computing Conference (EDOC 2008). Vol. 3(3), Taylor & Francis, 2009.

Conference Papers


  1. Wagner, Sebastian; Roller, Dieter; Kopp, Oliver; Unger, Tobias; Leymann, Frank: Performance Optimizations for Interacting Business Processes. In: Proceedings of the first IEEE International Conference on Cloud Engineering (IC2E 2013) ( pdf).
  2. Strauch, Steve; Breitenbücher, Uwe; Kopp, Oliver; Leymann, Frank; Unger, Tobias: Cloud Data Patterns for Confidentiality. In: Proceedings of the 2nd International Conference on Cloud Computing and Service Science (CLOSER'12), 2012 ( pdf).
  3. Strauch, Steve; Kopp, Oliver; Leymann, Frank; Unger, Tobias: A Taxonomy for Cloud Data Hosting Solutions. In: Proceedings of the International Conference on Cloud and Green Computing (CGC '11), 2011 ( pdf).
  4. Sirbu, Adina; Marconi, Annapaola; Pistore, Marco; Eberle, Hanna; Leymann, Frank; Unger, Tobias: Dynamic Composition of Pervasive Process Fragments. In: IEEE Computer Society (Hrsg): Proceedings of the IEEE International Conference on Web Services, ICWS 2011,Washington, DC, USA, July 4-9, 2011.
  5. Eberle, Hanna; Leymann, Frank; Schleicher, Daniel; Schumm, David; Unger, Tobias: Process Fragment Composition Operations. In: Proceedings of APSCC 2010.
  6. Unger, Tobias; Eberle, Hanna; Leymann, Frank; Wagner, Sebastian: An Event-model for Constraint-based Person-centric Flows. In: Proceedings of the 2010 International Conference on Progress in Informatics and Computing (PIC-2010) ( pdf).
  7. Eberle, Hanna; Leymann, Frank; Unger, Tobias: Transactional Process Fragments - Recovery Strategies for Flexible Workflows with Process Fragments. In: Proceedings of APSCC 2010.
  8. Eberle, Hanna; Leymann, Frank; Unger, Tobias: Implementation Architectures for Adaptive Workflow Management. In: ADAPTIVE 2010.
  9. Unger, Tobias; Roller, Dieter: Applying Processes for User-driven Refinement of People Activities. In: Proceedings of the 14th IEEE International EDOC Conference (EDOC 2010).
  10. Kopp, Oliver; Eberle, Hanna; Leymann, Frank; Unger, Tobias: The Subprocess Spectrum. In: Proceedings of the Business Process and Services Computing Conference: BPSC 2010 ( pdf).
  11. Mietzner, Ralph; Unger, Tobias; Leymann, Frank: Cafe: A Generic Configurable Customizable Composite Cloud Application Framework. In: Meersman, R. (Hrsg); Dillon, T. (Hrsg); Herrero, P. (Hrsg): CoopIS 2009 (OTM 2009).
  12. Marconi, Annapaola; Pistore, Marco; Sirbu, Adina; Leymann, Frank; Eberle, Hanna; Unger, Tobias: Enabling Adaptation of Pervasive Flows: Built-in Contextual Adaptation. In: Baresi, Luciano (Hrsg); Chi, Chi-Hung (Hrsg); Suzuki, Jun (Hrsg): Service-Oriented Computing, 7th International Joint Conference,ICSOC-ServiceWave 2009, Stockholm, Sweden, November 24-27, 2009.
  13. Eberle, Hanna; Unger, Tobias; Leymann, Frank: Process Fragments. In: Meersman, R. (Hrsg); Dillon, T. (Hrsg); Herrero, P. (Hrsg): On the Move to Meaningful Internet Systems: OTM 2009, Part I.
  14. Mietzner, Ralph; Unger, Tobias; Titze, Robert; Leymann, Frank: Combining Different Multi-Tenancy Patterns in Service-Oriented Applications. In: IEEE Computer Society (Hrsg): Proceedings of the 13th IEEE Enterprise Distributed Object Conference (EDOC 2009) (pdf).
  15. Eberle, Hanna; Föll, Stefan; Herrmann, Klaus; Leymann, Frank; Marconi, Annapaola; Unger, Tobias; Wolf, Hannes: Enforcement from the Inside: Improving Quality of Business in Process Management. In: 2009 IEEE International Conference on Web Services (ICWS 2009) (pdf).
  16. Unger, Tobias; Mauchart, Stephanie; Leymann, Frank; Scheibler, Thorsten: Aggregation of Service Level Agreements in the Context of Business Processes. In: Proceedings of the Twelfth IEEE Enterprise Distributed Object Conference (EDOC 2008), 15-19 September 2008, Munich, Bavaria, Germany.
  17. Unger, Tobias; Bauer, Thomas: Towards a Standardized Task Management. In: Bichler, Martin (Hrsg); Hess, Thomas (Hrsg); Krcmar, Helmut (Hrsg); Lechner, Ulrike (Hrsg); Matthes, Florian (Hrsg); Picot, Arnold (Hrsg); Speitkamp, Benjamin (Hrsg); Wolf, Petra (Hrsg): Multikonferenz Wirtschaftsinformatik 2008.

Workshop Papers


  1. Breitenbücher, Uwe; Kopp, Oliver; Leymann, Frank; Reiter, Michael; Roller, Dieter; Unger, Tobias: Six Strategies for Building High Performance SOA Applications. In: Schönberger, Andreas (Hrsg); Kopp, Oliver (Hrsg); Lohmann, Niels (Hrsg): Proceedings of the 4th Central-European Workshop on Services and their Composition, ZEUS-2012 ( pdf).
  2. Kopp, Oliver; Leymann, Frank; Schumm, David; Unger, Tobias: On BPMN Process Fragment Auto-Completion. In: Eichhorn, Daniel (Hrsg); Koschmider, Agnes (Hrsg); Zhang, Huayu (Hrsg): Proceedings of the 3rd Central-European Workshop on Services and their Composition (ZEUS 2011) ( pdf).
  3. Kopp, Oliver; Leymann, Frank; Unger, Tobias; Wagner, Sebastian: Towards The Essential Flow Model. In: Eichhorn, Daniel (Hrsg); Koschmider, Agnes (Hrsg); Zhang, Huayu (Hrsg): Proceedings of the 3rd Central-European Workshop on Services and their Composition (ZEUS 2011) ( pdf).
  4. Unger, Tobias; Wagner, Sebastian: Collaboration Aspects of Human Tasks. In: Proceedings of the 1st International Workshop on Cross Enterprise Collaboration, People, and Work (CEC-PAW10), 2010.
  5. Leymann, Frank; Unger, Tobias; Wagner, Sebastian: On designing a people-oriented constraint-based workflow language. In: Gierds, Christian (Hrsg); Sürmeli, Jan (Hrsg): Proceedings of the 2nd Central-European Workshop on Services and their Composition, ZEUS 2010, Berlin, Germany, February 25--26, 2010 ( pdf).
  6. Unger, Tobias; Eberle, Hanna; Leymann, Frank: Research challenges on person-centric flows. In: Gierds, Christian (Hrsg); Sürmeli, Jan (Hrsg): Proceedings of the 2nd Central-European Workshop on Services and their Composition, ZEUS 2010, Berlin, Germany, February 25--26, 2010.
  7. Eberle, Hanna; Kopp, Oliver; Unger, Tobias; Leymann, Frank: Retry Scopes to Enable Robust Workflow Execution in Pervasive Environments. In: Proceedings of the 2nd Workshop on Monitoring, Adaptation and Beyond (MONA+), 2009.
  8. Kopp, Oliver; Eberle, Hanna; Leymann, Frank; Unger, Tobias: From Process Models to Business Landscapes. In: Nüttgens, Markus (Hrsg); Rump, Frank J. Rump (Hrsg); Gadatsch, Andreas (Hrsg): EPK 2007: Geschäftsprozessmanagement mit Ereignisgesteuerten Prozessketten ( pdf).
  9. Kopp, Oliver; Unger, Tobias; Leymann, Frank: Nautilus Event-driven Process Chains: Syntax, Semantics, and their mapping to BPEL. In: Nüttgens, M. (Hrsg); Rump, F.J. (Hrsg); Mendling, J. (Hrsg): Proceedings of the 5th GI Workshop on Event-Driven Process Chains (EPK 2006) (pdf).

Technical Reports


  1. Kopp, Oliver; Henke, Sebastian; Karastoyanova, Dimka; Khalaf, Rania; Leymann, Frank; Sonntag, Mirko; Steinmetz, Thomas; Unger, Tobias; Wetzstein, Branimir: An Event Model for WS-BPEL 2.0, Technischer Bericht Nr. 2011/07 (pdf).
  2. Kopp, Oliver; Wetzstein, Branimir; Mietzner, Ralph; Unger, Tobias; Pottinger, Stefan; Karastoyanova, Dimka; Michael, Sabine; Leymann, Frank: A Model-Driven Approach to Implementing Coordination Protocols in BPEL, Technischer Bericht Nr. 2008/02 (pdf).

Other Publications


  1. Unger, Tobias: Aggregation von QoS und SLAs in BPEL Geschäftsprozessen, Diplomarbeit Nr. 2305, 2005.
  1. Scheibler, Thorsten; Unger, Tobias; Traunecker, Jochen: Bewertung von Frameworks für Personal Digital Assistants, Fachstudie Softwaretechnik Nr. 30, 2004.

Supervised Student Works

  1. Höger, Thorsten: Ein TaskManager für PerFlows, Diplomarbeit Nr. 3093, 2011.
  2. Hristova, Hristina: Visualisierung von Person-Centric Flows, Diplomarbeit Nr. 3054, 2010.
  3. Bormann, Kai: Optimierung des persönlichen Arbeitslaufes mit Hilfe constraint-basierter Prozesse, Diplomarbeit Nr. 3000, 2010.
  4. Eckhardt, Oliver: Menschen-zentrierte Restrukturierung von Human Tasks, Diplomarbeit Nr. 2999, 2010.
  5. Wagner, Sebastian: A Concept of Human-oriented Workflows, Diplomarbeit Nr. 2987, 2010.
  6. Staudenecker, Andreas: Verfeinerung menschlicher Aktivitäten in Workflows, Diplomarbeit Nr. 2961, 2009.
  7. Rock, Daniel: Erweiterte Arbeitslisten für Human Tasks, Diplomarbeit Nr. 2856, 2008.
  8. Eckhardt, Oliver: Pipes and Filter - Architektur und Workflow-basierte Systeme: ein praktischer Vergleich, Studienarbeit Nr. 2166, 2008.
  9. Haufler, Andreas; Staudenecker, Andreas; Wobser, Alexander: Vergleich von XML-Datenbanken, Fachstudie Softwaretechnik Nr. 87, 2008.
  10. Wagner, Sebastian; Sonntag, Mirko; Gostmann, Hendrik: Vergleich von Business Activity Monitoring Werkzeugen, Fachstudie Softwaretechnik Nr. 76, 2007.
  11. Bischoff, Georg: Autonomie von Geschäftsprozessen: Beschreibung & Umsetzung, Diplomarbeit Nr. 2536, 2007.