Dipl.-Ing. Waldemar Hummer, BSc (WU) University Assistant Email: Phone: +43-1-58801-18452 Fax: +43-1-58801-18491 Address: Distributed Systems Group (room EA0325) Information Systems Institute Vienna University of Technology Argentinierstrasse 8/184-1 A-1040 Wien Austria

[Short CV] [Research] [Teaching] [Publications] [Activities] [Miscellaneous]

Last updated: February 09, 2012

Education and Training
After finishing his Bachelor's degree in Computer Science at University of Innsbruck in 2007, Waldemar Hummer moved to Vienna University of Technology (TU Wien) where he received his Master's in Software Engineering & Internet Computing in 2009. Additionally, he holds a BSc in Business Administration (Betriebswirtschaftslehre) from Vienna University of Economics and Business (WU Wien). Currently, he is a university assistant at the Distributed Systems Group, Vienna University of Technology, where he contributes to teaching and carries out scientific research for his PhD.

Work Experience
In addition to his university education, Waldemar Hummer has gained practical experience in a variety of research and software development projects. The most noteworthy activities include his stay with IBM Haifa Research Lab in summer 2010 for a joint research project with the S-Cube Network of Excellence, a summer internship with Bloomberg L.P. of London in 2008, a student research position at University of Innsbruck (Quality Engineering Group, Univ.Prof. Dr. Ruth Breu), and a software project carried out for BayernLB (Bayerische Landesbank) in 2006 and 2007. From October 2008 until August 2009, he worked as teaching assistant (tutor) for the Master's courses Advanved Internet Techniques and Distributed Systems Technologies.

Below are some research topics that I am currently interested in:

• Service-oriented Architectures (SOA), Web Services (WS)
  • Protocols for Stateful Web Services
  • Testing of Service-based Systems
  • Service Composition
• Data on the Web
  • Data-as-a-Service
  • Web Services Data Aggregation
  • Event-Based Data Processing, Continuous Queries
  • Complex Event Processing (CEP)
  • Web Data Integration
• Software-Engineering Techniques
  • Domain-Specific Languages (DSLs)
  • Model-Driven Development (MDD)
• Miscellaneous Topics
  • Algorithms, Search Techniques in Artificial Intelligence
  • Role-Based Access Control (RBAC)
  • Annotations in the Semantic Web
  • Distributed Databases, Search Engines

Scientific Projects:

• Indenica (Oct. 2010 - ongoing): Indenica is a 7th Framework Programme EC project, whose aim is to 1) simplify the overall complexity of service platform development, 2) support platform convergence and interoperability, and 3) provide a reusable infrastructure for platform development, in order to support the automatic deployment and the monitoring, governance, and adaptation of services in a Virtual Service Platform.
• WS-Aggregation (Distributed Aggregation of Web Services Data)
• TeCoS (Test Coverage for Service Based Systems)
• SEPL (SErvice Protocol Language)

We use a Redmine project management tool to keep track of the progress of various projects. Check it out!

ID	Type	Title
184.260	VL 4.0	Distributed Systems Technologies
184.159	VL 2.0	Software Architectures
184.167	LU 2.0	Verteilte Systeme
184.715	PR 6.0	Projekt aus Software Engineering & Internet Computing
184.230	PR 4.0	Projektpraktikum (before winter term 2011/12)
184.233	PR 4.0	Informatikpraktikum 1 (before winter term 2011/12)
184.232	PR 4.0	Informatikpraktikum 2 (before winter term 2011/12)
184.254	PR 4.0	Praktikum aus Internet Computing (before winter term 2011/12)
184.242	PR 4.0	Freifachpraktikum
184.201	PR 4.0	Seminar (mit Bachelorarbeit)

If you are interested in doing a "Praktikum" or Master's thesis, do not hesitate to contact me.

Here you can find an overview of the research fields at our group, together with some current thesis topics and general information.

Some currently available topics:

• Scalable and Efficient XML DOM Parsing - Midway between SAX and DOM

Student Projects:

Name	Title	Type	Status
Michael Langmayr	Mobile Geo-Aware Communication and Collaboration Platform for a Global Food and Spices Manufacturer	Bachelor's Thesis	In Progress
Martin Kirchner	Executing Ad-Hoc Web Service API Coverage Queries in Different Distributed Database Systems	Praktikum	In Progress
Sebastian Burgstaller	.NET Implementation of the WS-Aggregation Query Model for Event-Based Data Processing	Bachelor's Thesis	In Progress
Becir Basic	A Technique to Decouple Cloud-based Elasticity and Optimization from Application Code (working title)	Praktikum	In Progress
Gilbert Fritz	Design and Implementation of a SOA Test Bed for a Mid-Sized Company	Praktikum	Finished
Eduard Szente	Efficient Distributed Computation of Web Services API Coverage Metrics (working title)	Master's Thesis	In Progress
Gerd Saurer	Architecture and Patterns for XML-Based Distributed Complex Event Processing Systems (working title)	Master's Thesis	In Progress
Michael Racz	Web-Based Inspection and Management of Topologies in a Distributed System	Praktikum	Finished
Michael Vodep	System zur Feuerwehr-Einsatzverwaltung (in German)	Praktikum	In Progress
Gerd Saurer	XML-Based Distributed Complex Event Processing	Praktikum	In Progress
Daniel Domberger	Testbed for Web Service Data Aggregation in Amazon Elastic Compute Cloud (EC2)	Praktikum	Finished
Bernhard Efler	Visual Construction and Debugging of Data Aggregation Queries (working title)	Bachelor's Thesis	In Progress
Michael Starzinger	Preprocessor for Web Services Data Aggregation Query Language	Praktikum	Finished

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1. Journal Papers (2)

2011 (2) SEPL - a domain-specific language and execution environment for protocols of stateful Web services. Hummer, W.; Leitner, P.; and Dustdar, S. 2011. Distributed and Parallel Databases1--31. Bibtex Cost-Based Optimization of Service Compositions. Leitner, P.; Hummer, W.; and Dustdar, S. 2011. IEEE Transactions on Services Computing (TSC). Bibtex

2. Conference Proceedings (12)

2012 (2) CloudScale - a Novel Middleware for Building Transparently Scaling Cloud Applications. Leitner, P.; Hummer, W.; Satzger, B.; Inzinger, C.; and Dustdar, S. 2012. In 27th ACM Symposium on Applied Computing (SAC'12), Cloud Computing Track, (to appear). Bibtex Non-Intrusive Policy Optimization for Dependable and Adaptive Service-Oriented Systems. Inzinger, C.; Satzger, B.; Hummer, W.; Leitner, P.; and Dustdar, S. 2012. In Proceedings of the 2012 ACM Symposium on Applied Computing (SAC'12), (to appear), Trento, Italy. Bibtex   2011 (8) Distributed Continuous Queries Over Web Service Event Streams. Hummer, W.; Satzger, B.; Leitner, P.; Inzinger, C.; and Dustdar, S. 2011. In 7th International Conference on Next Generation Web Services Practices (NWeSP'11). Distributed Continuous Queries Over Web Service Event Streams Bibtex Dynamic Migration of Processing Elements for Optimized Query Execution in Event-based Systems. Hummer, W.; Leitner, P.; Satzger, B.; and Dustdar, S. 2011. In 1st International Symposium on Secure Virtual Infrastructures (DOA-SVI'11), OnTheMove Federated Conferences. Dynamic Migration of Processing Elements for Optimized Query Execution in Event-based Systems Bibtex Esc: Towards an Elastic Stream Computing Platform for the Cloud. Satzger, B.; Hummer, W.; Leitner, P.; and Dustdar, S. 2011. In 4th IEEE International Conference on Cloud Computing (CLOUD'11). Bibtex Towards Efficient Measuring of Web Services API Coverage. Hummer, W.; Raz, O.; and Dustdar, S. 2011. In 3rd International Workshop on Principles of Engineering Service-Oriented Systems (PESOS), co-located with ICSE'11. Towards Efficient Measuring of Web Services API Coverage Bibtex WS-Aggregation: Distributed Aggregation of Web Services Data. Hummer, W.; Leitner, P.; and Dustdar, S. 2011. In 26th ACM SIGAPP Symposium On Applied Computing (SAC'11), SOAP Track. WS-Aggregation: Distributed Aggregation of Web Services Data Bibtex Stepwise and Asynchronous Runtime Optimization of Web Service Compositions. Leitner, P.; Hummer, W.; Satzger, B.; and Dustdar, S. 2011. In 12th International Conference on Web Information Systems Engineering (WISE'11), (short paper). Bibtex An Integrated Approach for Identity and Access Management in a SOA Context. Hummer, W.; Gaubatz, P.; Strembeck, M.; Zdun, U.; and Dustdar, S. 2011. In 16th ACM Symposium on Access Control Models and Technologies (SACMAT'11). An Integrated Approach for Identity and Access Management in a SOA Context Bibtex Test Coverage of Data-Centric Dynamic Compositions in Service-Based Systems. Hummer, W.; Raz, O.; Shehory, O.; Leitner, P.; and Dustdar, S. 2011. In 4th International Conference on Software Testing, Verification and Validation (ICST'11). Test Coverage of Data-Centric Dynamic Compositions in Service-Based Systems Bibtex   2010 (2) A Step-By-Step Debugging Technique To Facilitate Mashup Development and Maintenance. Hummer, W.; Leitner, P.; and Dustdar, S. 2010. In 4th International Workshop on Web APIs and Services Mashups (Mashups'10), co-located with ECOWS 2010. A Step-By-Step Debugging Technique To Facilitate Mashup Development and Maintenance Bibtex Preventing SLA Violations in Service Compositions Using Aspect-Based Fragment Substitution. Leitner, P.; Wetzstein, B.; Karastoyanova, D.; Hummer, W.; Dustdar, S.; and Leymann, F. 2010. In International Conference on Service-Oriented Computing (ICSOC'10). Bibtex

3. Book Chapters (1)

2010 (1) VRESCo - Vienna Runtime Environment for Service-oriented Computing. Hummer, W.; Leitner, P.; Michlmayr, A.; Rosenberg, F.; and Dustdar, S. 2010. Service Engineering. European Research Results, Dustdar, Schahram and Li, Fei, 299--324, Springer. Bibtex

4. Technical Reports (2)

2011 (2) Cost-Based Optimization of Service Compositions. Leitner, P.; Hummer, W.; and Dustdar, S. 2011. Technical Report (TUV-1841-2011-01), Vienna University of Technology. Cost-Based Optimization of Service Compositions Bibtex Distributed Continuous Data Aggregation Over Web Service Event Streams. Hummer, W.; Satzger, B.; Leitner, P.; and Dustdar, S. 2011. Technical Report (TUV-1841-2011-04), Vienna University of Technology. Distributed Continuous Data Aggregation Over Web Service Event Streams Bibtex

5. Theses (1)

2009 (1) Towards a Domain-Specific Language for Defining Intra-Service Protocols of Stateful Web Services. Hummer, W. 2009. Towards a Domain-Specific Language for Defining Intra-Service Protocols of Stateful Web Services Bibtex

Link To This Page.

Copyright Policy on Published Papers
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Reviews (only listing those where officially invited)

• Conferences and Workshops
  1. International Conference on Computer & Communication Technology, India, September 15-17, 2011
  2. ServiceWave Conference, Belgium, December 13-15, 2010
  3. 8th IEEE European Conference on Web Services, Cyprus, December 1, 2010
• Journals
  
  1. IEEE Software
  2. Engineering Applications of Artificial Intelligence

Attended Conferences

8. 7th International Conference on Next Generation Web Services Practices (NWeSP 2011), October 19-21, Salamanca, Spain
7. 10th OnTheMove Federated Conferences (OTM 2011), October 17-21, Hersonissos, Crete, Greece
6. 16th ACM Symposium on Access Control Models and Technologies (SACMAT 2011), Innsbruck, Austria
5. 33rd International Conference on Software Engineering (ICSE 2011), Honolulu (Hawaii), USA
4. 26th ACM SIGAPP Symposium On Applied Computing (SAC 2011), Taichung, Taiwan
3. 4th International Conference on Software Testing, Verification and Validation (ICST 2011), Berlin, Germany
2. 8th European Conference on Web Services (ECOWS 2010), Ayia Napa, Cyprus
1. 10th International Conference on Web Engineering (ICWE 2010), Vienna, Austria

Tools

• JAXB-facets: The Java Java Architecture for XML Binding (JAXB, JSR222) is a framework which simplifies the mapping between Java objects and their XML representation. Although an often requested feature, the JAXB reference implementation (JAXB RI, http://jaxb.java.net/) currently does not support XSD facets for simple types (e.g., pattern, maxSize, fractionDigits etc.) in generated XML Schema files. We therefore provide a simple extension to JAXB RI to define facets for Java class attributes using an @Facets annotation, which are then considered in the the XML Schema generation procedure. Furthermore, our implementation supports @MinOccurs and @MaxOccurs annotations. These features are particularly useful when implementing Web services with JAX-WS (Java API for XML Web Services, JSR224, JAX-WS RI). The implementation can be downloaded here.