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Personal Homepage of
Dr. Marcel Karnstedt


Current contact:

Springer-Verlag GmbH
Tiergartenstraße 17
69121 Heidelberg
Germany

Phone: +49-6221-4878868
E-Mail: marcel.karnstedt[at]springer.com
PGP: public PGP-key





fka...


Short CV

Marcel Karnstedt received his Diploma (M.Sc.) from the Martin-Luther-Universität Halle-Wittenberg, Germany, at the end of 2003. From January 2004 to February 2009 he worked as a research associate and teaching assistant with the Databases & Information Systems Group (head: Prof. Dr.-Ing. habil. Kai-Uwe Sattler) at the Ilmenau University of Technology, Germany. That is where he also successfully completed his Ph.D. (summa cum laude).

In March 2009 he moved to the Digital Enterprise Research Institute (DERI), National University of Ireland, Galway (NUIG). He worked with the Unit for Information Mining and Retrieval (UIMR) and started as a Postdoctoral Researcher in the CLIQUE project on analyzing and visualizing large graphs and networks, specifically social networks and biological networks. Since December 2009 he also holds an adjunct lectureship at NUIG. From November 2010 to October 2013 he had been employed as a Senior Postdoc, mainly responsible for DERI's part of the ROBUST project, an EU-funded international project focusing on risks and opportunities in huge-scale business communities. Further, he actively contributed to the tasks of query processing and sensor mining in the SPITFIRE project on combining the "Internet of Things" with the "Web of Things".

From November 2013 to July 2015 he held a permanent position with Bell Labs in Ireland, the research arm of Alcatel-Lucent. He worked with the Scalable Data Processing Activity as a part of the IP Platforms Research Program. His main responsibilities revolved around shaping the research agenda of the team focusing on large-scale data processing and data management for scalable analytics. He further played a key role in a project on next-generation communication. He worked on designing and integrating a novel context engine based on scalable text and graph analytics, as well as implementing core components of the server backend of the project's mobile app.

In July 2015, Marcel made his move from research into industry, though not completely abandoning his contact to science. He started as Senior Data Architect in the IT & Production Corporate Markets / Databases department of Springer Science+Business Media. He is currently leading a team of data specialists and software engineers responsible for designing, implementing and maintaining the whole data architecture of the department. This involves responsibilities spanning from data management and retrieval techniques (relational, NoSQL, graphs and IR), over modeling and building of domain-specific databases, to industrial-strength delivery of database products and search.


Research Interests

If I try to bring it to down to one single point, this probably describes my research interests best:

Large-scale data management, query processing and data mining - with a tendency to distribution

...that sounds and is quite broad, so here are some more specific strands and materializations of this, which I was and am dealing with:
 
Managing, querying and analyzing structured Web data, e.g., Linked Data
Infrastructures and techniques for large-scale graph mining and (social) network analysis - with a focus on stream, distributed and cloud approaches
Distributed query processing, planning and optimization - on the Web, in sensor networks, etc.
Universal data systems distributed at Internet scale, P2P databases
Resource-adaptive and quality-aware mining in data streams

 
The easiest (and, admittedly, eye-catching) way to illustrate the expertise I built with these interests is probably the tag cloud on top of this page. Created from the text of all my (English) publications - kudos to tagxedo.com!

Main Past Projects (in Academia)

ROBUST: Risk and Opportunity management of huge-scale BUSiness communiTy cooperation
SPITFIRE: Semantic-Service Provisioning for the Internet of Things using Future Internet Research by Experimentation
CLIQUE: scalable computational techniques for the analysis and visualisation of network data

Publications, articles, reports

A major part of the publications listed is included in my BibTex file.

List of all publications also available in:

Books and Book Chapters


      M. Karnstedt:
Query Processing in a DHT-Based Universal Storage - The World as a Peer-to-Peer Database,
Ph.D. thesis at Ilmenau University of Technology, Databases and Information Systems Group, 2009.
Book available on Amazon.de
Abstract published in Datenbank Spektrum 31/09, Dec. 2009, pp. 53-54
Online version

Coming Soon
Several chapter contributions,
in: Harith Alani, Bassem I. Nasser, Steffen Staab (eds.): A Computational Approach to Analysing and Managing Online Communities, Springer, to appear.
Marcel Karnstedt, Kai-Uwe Sattler, Manfred Hauswirth:
P2P-Based Query Processing over Linked Data,
in: Andreas Harth, Katja Hose, Ralf Schenkel (eds.): Linked Data Management, CRC Press, pp. 339-368, 2014.
Jürgen Umbrich, Marcel Karnstedt, Axel Polleres, Kai-Uwe Sattler:
Index-Based Source Selection and Optimization,
in: Andreas Harth, Katja Hose, Ralf Schenkel (eds.): Linked Data Management, CRC Press, pp. 311-337, 2014.
Alfredo Cuzzocrea, Marcel Karnstedt, Manfred Hauswirth, Kai-Uwe Sattler, Roman Schmidt:
Estimating the Completeness of Range Queries over Structured P2P Databases: Fundamentals, Theory, and Effective Applications to Distributed Information Systems,
in: Giancarlo Fortino, Carlos E. Palau (eds.): Next Generation Content Delivery Infrastructures: Emerging Paradigms and Technologies, IGI Global, 2012, pp. 251-281.
M. Karnstedt, T. Hennessy, J. Chan, P. Basuchowdhuri, C. Hayes, Th. Strufe:
Churn in Social Networks,
in: Borko Furht (Ed.): Handbook of Social Network Technologies and Applications, Springer Verlag 2010, pp. 185-220.


Journal Articles

Marcel Karnstedt, Kai-Uwe Sattler, Manfred Hauswirth:
Scalable Distributed Indexing and Query Processing over Linked Data,
Journal of Web Semantics: Science, Services and Agents on the World Wide Web, Vol. 10, Jan 2012, pp. 3-32.
Dennis Pfisterer, Kay Römer, Daniel Bimschas, Henning Hasemann, Manfred Hauswirth, Marcel Karnstedt, Oliver Kleine, Alexander Kröller, Myriam Leggieri, Richard Mietz, Max Pagel, Alexandre Passant, Ray Richardson, Cuong Truong:
SPITFIRE: Towards a Semantic Web of Things,
IEEE Communications Magazine 49/11, Nov 2011, pp. 40-48.
V. Belák, M. Karnstedt, C. Hayes:
Life-Cycles and Mutual Effects of Scientific Communities,
Procedia - Social and Behavioral Sciences, Vol. 22, 2011, pp. 37-48.
C. Junghans, M. Karnstedt, M. Gertz:
Quality-Driven Resource-Adaptive Data Stream Mining,
SIGKDD Explorations 13/1, 2011, pp 72-82.
J. Umbrich, K. Hose, M. Karnstedt, A. Harth, A. Polleres:
Comparing Data Summaries for Processing Live Queries over Linked Data,
WWW Journal 14/5-6, Special Issue "Querying the Data Web", 2011, pp. 495-544.
D. Klan, M. Karnstedt, K. Hose, L. Ribe-Baumann, K. Sattler:
Stream Engines Meet Wireless Sensor Networks: Cost-Based Planning and Processing of Complex Queries in AnduIN,
Distributed and Parallel Databases Journal 29/1, Special Issue "Query Processing in Sensor Networks", pp. 151-183, 2011.
C. Franke, M. Karnstedt, D. Klan, M. Gertz, K. Sattler, E. Chervakova:
In-Network Detection of Anomaly Regions in Sensor Networks with Obstacles,
Computer Science - Research and Development: Volume 24, Issue 3, 2009, pp. 153-170.
M. Karnstedt, K. Stolze:
Datenbankimplementierungstechniken zum Anfassen - Ein Erfahrungsbericht,
Datenbank Spektrum, 27/08, Dec. 2008, pp. 37-41, dpunkt.verlag

Conference Publications

Hugo Hromic, Narumol Prangnawarat, Ioana Hulpus, Marcel Karnstedt, and Conor Hayes:
Graph-based Methods for Clustering Topics of Interest in Twitter,
Poster Paper, International Conference on Web Engineering (ICWE), 2015, to appear.
Soheila Dehghanzadeh, Marcel Karnstedt, Stefan Decker, Josiane Xavier Parreira, Jürgen Umbrich and Manfred Hauswirth:
Optimizing SPARQL Query Processing On Dynamic and Static Data Based on Query Time/Freshness Requirements Using Materialization,
4th Joint International Semantic Technology (JIST'2014), 2014, to appear.
Nur Aini Rakhmawati, Marcel Karnstedt, Michael Hausenblas, Ali Hasnain, Jürgen Umbrich:
A Comparison of Federation over SPARQL Endpoints Frameworks,
4th Conference on Knowledge Engineering and Semantic Web (KESW'13), 2013, to appear.
Ioana Hulpus, Conor Hayes, Marcel Karnstedt, Derek Greene, Marek Jozwowicz:
Kanopy: Analysing the Semantic Network around Document Topics,
European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML/PKDD'13), 2013, to appear.
Aftab Iqbal, Marcel Karnstedt, Michael Hausenblas:
Analyzing Social Behavior of Software Developers Across Different Communication Channels,
25th International Conference on Software Engineering and Knowledge Engineering (SEKE), 2013.
Christoph Boden, Marcel Karnstedt, Miriam Fernandez, Volker Markl:
Large-Scale Social-Media Analytics on Stratosphere,
International World Wide Web Conference (WWW) - Demo Track, 2013, to appear.
Jürgen Umbrich, Claudio Gutierrez, Aidan Hogan, Marcel Karnstedt, Josiane Xavier Parreira:
The ACE Theorem for Querying the Web of Data,
International World Wide Web Conference (WWW) - Poster Track, 2013, to appear.
Marcel Karnstedt, Conor Hayes, Harith Alani, Miriam Fernandez:
Scalable Analytics to Enable Risk Management in Online Communities,
26th European Conference on Operational Research (EURO'13), 2013, abstract accepted for presentation.
Ioana Hulpus, Conor Hayes, Marcel Karnstedt, Derek Greene:
Unsupervised Graph-Based Topic Labelling using DBpedia,
6th ACM International Conference on Web Search and Data Mining (WSDM'13), 2013, pp. 465-474.
Ioannis Chatzigiannakis, Henning Hasemann, Marcel Karnstedt, Oliver Kleine, Alexander Kröller, Myriam Leggieri, Dennis Pfisterer, Kay Römer, Cuong Truong:
True Self-Configuration for the IoT,
IoT Challenge Competition, Internet of Things International Conference for Industry and Academia, 2012, ranked 2nd place, pp. 9-15.
Jürgen Umbrich, Marcel Karnstedt, Aidan Hogan, Josiane Xavier Parreira:
Hybrid SPARQL queries: fresh vs. fast results,
International Semantic Web Conference (ISWC), 2012, pp. 608-624.
Jürgen Umbrich, Marcel Karnstedt, Aidan Hogan, Josiane Xavier Parreira:
Freshening up while Staying Fast: Towards Hybrid SPARQL Queries,
Knowledge Engineering and Knowledge Management (EKAW), 2012, pp. 164-174.
Matthew Rowe, Miriam Fernandez, Harith Alani, Inbal Ronen, Conor Hayes and Marcel Karnstedt:
Behaviour analysis across different types of Enterprise Online Communities,
Fourth ACM/ICA Web Science Conference, 2012, pp. 255-264.
Ioana Hulpus, Conor Hayes, Derek Greene, Marcel Karnstedt:
An Eigenvalue-Based Measure for Word-Sense Disambiguation,
25th International FLAIRS Conference, 2012, pp. 226-231.
R. Richardson, M. Hauswirth, A. Passant, M. Leggieri, M. Karnstedt, A. Kröller, H. Hasemann, O. Kleine, D. Pfisterer, K. Römer, C. Truong:
Unlocking Wireless Sensor Networks,
e-Challenges e-2011, 2011.
M. Karnstedt, M. Rowe, J. Chan, H. Alani, C. Hayes:
The Effect of User Features on Churn in Social Networks,
Third ACM/ICA Web Science Conference, 2011, earned Best Paper Award.
[video & slides]
V. Belák, M. Karnstedt, C. Hayes:
Life-Cycles and Mutual Effects of Scientific Communities,
7th Conference on Applications of Social Network Analysis (ASNA 2010), 2010, presented at conference, journal version available.
M. Karnstedt, T. Hennessy, J. Chan, C. Hayes:
Churn in Social Networks: A Discussion Boards Case Study,
2nd IEEE International Conference on Social Computing (SocialCom2010), 2010, pp. 233-240.
A. Harth, K. Hose, M. Karnstedt, A. Polleres, K. Sattler, J. Umbrich:
Data Summaries for On-demand Queries over Linked Data,
19th World Wide Web Conference (WWW '10), Raleigh, NC, USA, 2010, pp. 411-420.
M. Hausenblas, M. Karnstedt:
Understanding Linked Open Data as a Web-Scale Database,
International Conference on Advances in Databases, Knowledge, and Data Applications (DBKDA), The Three Valleys, French Alps, France, 2010, pp. 56-61, earned Best Paper Award.
D. Klan, K. Hose, M. Karnstedt, K. Sattler:
Power-Aware Data Analysis in Sensor Networks,
Demo Proceedings of the 26th International Conference on Data Engineering, Long Beach, California, USA, 2010, pp. 1125-1128.
C. Franke, M. Karnstedt, D. Klan, M. Gertz, K. Sattler, W. Kattanek:
In-Network Detection of Anomaly Regions in Sensor Networks with Obstacles,
BTW 2009, Münster, Germany, pp. 367-386, chosen for a special journal issue on "BTW 2009 Best Papers".
M. Karnstedt, D. Klan, Ch. Pölitz, K. Sattler, C. Franke:
Adaptive Burst Detection in a Stream Engine,
2009 ACM Symposium on Applied Computing (SAC'09), Apr 2009, Honululu, USA, pp. 1511-1515.
M. Karnstedt, K. Sattler, M. Haß, M. Hauswirth, B. Sapkota, R. Schmidt:
Estimating the Number of Answers with Guarantees for Structured Queries in P2P Databases,
ACM 17th Conference on Information and Knowledge Management (CIKM'08), Napa Valley, USA, Oct. 2008, pp. 1407-1408
M. Karnstedt, K. Sattler, M. Hauswirth, B. Sapkota, R. Schmidt:
A DHT-based Infrastructure for Ad-hoc Integration and Querying of Semantic Data,
Twelfth International Database Engineering & Applications Symposium (IDEAS'08), Coimbra, Portugal, Sep. 2008, pp. 19-28
M. Karnstedt, K. Sattler, R. Schmidt:
Completeness Estimation of Range Queries in Structured Overlays,
Seventh IEEE International Conference on Peer-to-Peer Computing (P2P'07), Galway, Ireland, Sep. 2007, pp. 71-78
Marcel Karnstedt, Kai-Uwe Sattler, Martin Richtarsky, Jessica Müller, Manfred Hauswirth, Roman Schmidt, Renault John:
UniStore: Querying a DHT-based Universal Storage
ICDE 2007 Demonstrations Program, Istanbul, Turkey, 2007, pp. 1503-1504.
M. Karnstedt, K. Sattler, M. Hauswirth, R. Schmidt:
Cost-Aware Processing of Similarity Queries in Structured Overlays,
Sixth IEEE Int. Conference on Peer-to-Peer Computing (P2P2006), September 2006, Cambridge, UK, pp. 81-89
K. Hose, A. Job, M. Karnstedt, K. Sattler:
An Extensible, Distributed Simulation Environment for Peer Data Management Systems,
10. International Conference on Extending Database Technology - Demonstration Track, Munich, Germany, 2006, pp. 1198-1202.
C. Franke, M. Hartung, M. Karnstedt, K. Sattler:
Quality-aware Mining of Data Streams,
International Conference on Information Quality - ICIQ 2005, Boston, USA, pp. 300-315.
K. Hose, M. Karnstedt, K. Sattler, E.-A. Stehr:
Adaptive Routing Filters for Robust Query Processing in Schema-Based P2P Systems,
Proceedings of IDEAS'05, Montreal, Canada, 2005, pp. 223-228.

Workshop Publications

Jürgen Umbrich, Claudio Gutierrez, Aidan Hogan, Marcel Karnstedt and Josiane Xavier Parreira:
Eight Fallacies when Querying the Web of Data,
ICDE Workshop on Data Engineering Meets the Semantic Web (DESWEB), 2013, to appear.
Hugo Hromic, Marcel Karnstedt, Mengjiao Wang, Alice Hogan, Václav Belák and Conor Hayes:
Event Panning in a Stream of Big Data,
LWA Workshop on Knowledge Discovery, Data Mining and Machine Learning (KDML), 2012.
Jürgen Umbrich, Marcel Karnstedt, Josiane Xavier Parreira, Axel Polleres, Manfred Hauswirth:
Linked Data and Live Querying for Enabling Support Platforms for Web Dataspaces,
ICDE Workshop on Data Engineering Meets the Semantic Web (DESWEB), 2012, pp. 23-28.
D. Pfisterer, D. Bimschas, O. Kleine, K. Roemer, C. Truong, R. Mietz, A. Kroeller, H. Hasemann, M. Karnstedt, A. Passant, M. Leggieri, M. Hauswirth:
Semantic-Service Provisioning for the Internet of Things,
Workshop on Semantic Services for the Internet of Things (SSIT), ECEASST Workshop at Kommunikation in Verteilten Systemen (KIVS'11), Electronic Communications of the EASST Volume 37, 2011.
J. Umbrich, M. Karnstedt, S. Land:
Towards Understanding the Changing Web: Mining the Dynamics of Linked-Data Sources and Entities,
KDML 2010: Knowledge Discovery, Data Mining, and Machine Learning, Oct 2010, Kassel, Germany, pp. 159-162.
A. Iqbal, M. Karnstedt:
On the Need of Graph Support for Developer Identification in Software Repositories,
KDML 2010: Knowledge Discovery, Data Mining, and Machine Learning, Oct 2010, Kassel, Germany, pp. 77-80.
M. Karnstedt, C. Hayes:
Towards Cross-Community Effects in Scientific Communities,
KDML 2009: Knowledge Discovery, Data Mining, and Machine Learning, Sep 2009, Darmstadt, Germany, pp. 52-55.
J. Umbrich, M. Karnstedt, A. Harth:
Fast and Scalable Pattern Mining for Media-Type Focused Crawling,
KDML 2009: Knowledge Discovery, Data Mining, and Machine Learning, Sep 2009, Darmstadt, Germany, pp. 119-126.
K. Stolze, M. Karnstedt:
Datenbankimplementierungstechniken zum Anfassen - Ein Erfahrungsbericht,
Autumnal Meeting of the GI Professional Group on Databases, Nov. 2008, Düsseldorf, Germany
M. Karnstedt, K. Sattler, M. Haß, M. Hauswirth, B. Sapkota, R. Schmidt:
Approximating Query Completeness by Predicting the Number of Answers in DHT-based Web Applications,
Tenth International Workshop on Web Information and Data Management (WIDM'08 icw CIKM'08), Napa Valley, USA, Oct. 2008, pp. 71-78
D. Klan, M. Karnstedt, Ch. Pölitz, K. Sattler:
Towards Burst Detection for Non-Stationary Stream Data,
KDML 2008: Knowledge Discovery, Data Mining, and Machine Learning, Oct 2008, Würzburg, Germany, pp. 57-60
D. Klan, K. Sattler, K. Hose, M. Karnstedt:
Decentralized Managing of Replication Objects in Massively Distributed Systems,
EDBT 2008: Workshop on Data Management in Peer-to-peer systems (DaMaP'08), Nantes, France, March 2008, pp. 19-26
M. Karnstedt, K. Sattler, D. Habich, W. Lehner:
Quality of Service-Driven Stream Mining,
Second International Workshop on Data Stream Mining and Management (DSMM 2007), Seventh IEEE International Conference on Data Mining Workshops (ICDMW 2007), Omaha, USA, Oct 2007, pp. 545-550.
M. Karnstedt, C. Franke, M.M. Gaber:
A Model for Quality Guaranteed Resource-Aware Stream Mining,
Fifth International Workshop on Knowledge Discovery from Ubiquitous Data Streams icw ECML/PKDD'07, Warsaw, Poland, Sep 2007, pp. 72-82
K. Hose, M. Karnstedt, D. Klan, K. Sattler, J. Quasebarth:
Incremental Mining for Facility Management,
KDML 2007: Knowledge Discovery, Data Mining, and Machine Learning, Sep 2007, Halle (Saale), Germany, pp. 183-190
A. Klein, H.-H. Do, G. Hackenbroich, M. Karnstedt, W. Lehner:
Representing Data Quality for Streaming and Static Data
ICDE Workshop on Ambient Intelligence, Media, and Sensing (AIMS07), Istanbul, Turkey, 2007, pp. 3-10.
M. Karnstedt, J. Müller, K. Sattler:
Cost-Aware Skyline Queries in Structured Overlays
ICDE Workshop on Ranking in Databases (DBRank07), Istanbul, Turkey, 2007, pp. 285-288.
C. Franke, M. Karnstedt, K. Sattler:
Mining Data Streams under Dynamicly Changing Resource Constraints,
KDML 2006: Knowledge Discovery, Data Mining, and Machine Learning, October 2006, Hildesheim, Germany, pp. 262-269
A. Hinneburg, D. Habich, M. Karnstedt:
Analyzing Data Streams by Online DFT,
ECML/PKDD-2006 International Workshop on Knowledge Discovery from Data Streams (IWKDDS-2006), 2006, Berlin, Germany, pp. 67-76
M. Karnstedt, K. Sattler, M. Hauswirth, R. Schmidt:
Similarity Queries on Structured Data in Structured Overlays,
2nd IEEE Int. Workshop on Networking Meets Databases (NetDB'06) icw 22nd IEEE Conference on Data Engineering (ICDE 2006), April 2006, Atlanta, GA, USA, pp. 32-37
K. Hose, M. Karnstedt, A. Koch, K. Sattler, D. Zinn:
Processing Rank-Aware Queries in P2P Systems,
Third International Workshop on Databases, Information Systems and Peer-to-Peer Computing (DBISP2P 2005), in conjunction with VLDB 2005, Trondheim, Norway, August 2005, pp. 238-249.
K. Hose, M. Karnstedt, K. Sattler, D. Zinn:
Processing Top-N Queries in P2P-based Web Integration Systems with Probabilistic Guarantees,
Eighth International Workshop on the Web and Databases (WebDB 2005), co-located with SIGMOD 2005, Baltimore, USA, June 2005, pp. 109-114.
D. Habich, M. Karnstedt, A. Hinneburg:
Erkennen von aperiodischen Ausreißern,
6. GI-Workshop "Knowledge Discovery" in the run-up to BTW 2005, Karlsruhe, Germany, 2005.
H.Blaar, M. Karnstedt, T. Lange, R. Winter:
Possibilities to solve the clique problem by thread parallelism using task pools,
Proc. of the 19th IEEE Parallel & Distributed Processing Symposium, 7th Workshop on Java for Parallel and Distributed Computing, April 4-8 2005, Denver, Colorado, USA, IEEE, 2005.
M. Karnstedt, K. Sattler, E. Schallehn, M. Endig:
Ad-Hoc Integration in schemabasierten P2P Systemen,
In: P. Dadam, M. Reichert (Hrsg.): Proc. Informatik 2004, GI-Workshop Dynamische Informationsfusion, Ulm, Germany, 2004, pp. 373-377.
M. Karnstedt, K. Hose, K. Sattler:
Query Routing and Processing in Schema-Based P2P Systems,
In: Workshop Proc. of DEXA 2004, 1. Int. Workshop Grid and Peer-to-Peer Computing Impacts on Large Scale Heterogeneous DB Systems (GLOBE'04 icw DEXA), Sep 2004, Zaragoza, Spain, pp. 544-548.
M. Karnstedt:
Anfragebearbeitung und Routing in Schema-basierten P2P-Systemen,
In: M. Samia, St. Conrad (Hrsg.): Proceedings of the 16. Workshop "Grundlagen von Datenbanken" (GvDB04), June 2004, Monheim, Germany, pp. 78-82.
M. Karnstedt, K. Hose, K. Sattler:
Distributed Query Processing in P2P Systems with incomplete schema information,
In: J. Grundspenkis, M. Kirikova (Hrsg.): Proc. of CAiSE'04 Workshops, 3. Int. Workshop on Data Integration over the Web (DIWeb2004 icw CAiSE), June 2004, Riga, Latvia, pp. 34-45.
M. Karnstedt, K. Sattler, I. Geist, H. Höpfner:
Semantic Caching in Ontology-based Mediator Systems,
In: Proc. of Berliner XML-Tage 2003, 3. Int. Workshop of the GI Working Group "Web und Datenbanken" (WebDB 2003), 2003, pp. 155-169.

Reports etc.

Nur Aini Rakhmawati, Jürgen Umbrich, Marcel Karnstedt, Ali Hasnain, Michael Hausenblas:
Querying over Federated SPARQL Endpoints - A State of the Art Survey,
DERI Technical Report 2013-06-07, 2013.
M. Karnstedt:
Scalable Social Analytics for Online Communities,
IEEE Special Technical Community on Social Networks e-letter, Vol. 1, No. 2, 2013.
V. Belák, M. Karnstedt, C. Hayes:
Life-Cycles and Mutual Effects of Scientific Communities,
Poster presented at Satellite meeting "WebScience: exploring the frontier", The Royal Society London, UK, 2010.
A. Harth, K. Hose, M. Karnstedt, A. Polleres, K. Sattler, J. Umbrich:
On Lightweight Data Summaries for Optimised Query Processing over Linked Data,
DERI Technical Report 2009-11-17, 2009.
M. Karnstedt, K. Sattler, M. Richtarsky, J. Müller, M. Hauswirth, R. Schmidt, R. John:
UniStore: Querying a DHT-based Universal Storage,
LSIR-REPORT-2006-011 at EPFL, Switzerland, 2006
M. Karnstedt, K. Sattler, M. Hauswirth, R. Schmidt:
Light-weight Internet-scale Universal Storage,
LSIR-REPORT-2006-008 at EPFL, Switzerland, 2006
H. Blaar, M. Karnstedt, T. Lange, R. Winter:
Possibilities to solve the clique problem by thread parallelism using task pools,
Reports of the Institute for Computer Science Martin-Luther-Universität Halle-Wittenberg, Report No. 09 (2004).
M. Karnstedt:
Semantisches Caching in ontologiebasierten Mediatoren,
Diploma Thesis MLU Halle-Wittenberg, 2003.
M. Karnstedt:
Semantisches Caching in ontologiebasierten Mediatoren,
In: Proceedings Informatiktage 2003 in Bad Schussenried, Germany, Poster, p. 305.
M. Karnstedt, T. Lange:
Parallele Algorithmen zur Lösung des CLIQUE-Problems
In: Proceedings Informatiktage 2002 in Bad Schussenried, Germany, Poster, p. 327.


Professional Activities

Memberships

Association for Computing Machinery (ACM)
IEEE Computer Society (IEEE CS)
Gesellschaft für Informatik e.V. (GI), German society for informatics

Talks

Tutorial: Trade-offs in Processing Large Graphs: Representations, Storage, Systems and Algorithms (with Deepak Ajwani, Alessandra Sala, and Pat Nicholson), 24th World Wide Web Conference (WWW'2015)
Invited Talk: Advanced Information Management III - Scalable Data Analysis and Data Mining, Lecture at TU Berlin, 2013: Community Analysis
Invited Talk: P2P Networks, Lecture at TU Darmstadt, 2011: The Intelligence of Social Connections ... and why this is relevant for P2P
Invited Talk: Web Science Doctoral Summer School 2011: What causes churn in online social networks? [video]
Invited Talk: IFIP 2.6 - Research Workshop 2009 ("Fostering Web Data"): Querying Web Data in a Triple-Based Universal Storage with Application to Social Networks [slides]
Tutorial: Introduction to Peer-to-Peer Networks (with Manfred Hauswirth) [slides] [video]

Perspectives

Contributed to: Bry, Francois; Cap, Clemens; Dahm, Ingo; Maintz, Julia; Schaffert, Sebastian (Eds.): Manifesto -- Perspectives Workshop: Digital Social Media (all workshop documents)

Reviewing

Programme Committees
 
Consuming Linked Data, ISWC Workshop (COLD '14, COLD '15)
World Wide Web Conference, Poster Track (WWW '15)
AAAI Conference, Track AI and the Web (AAAI '13, AAAI '15)
Extended Semantic Web Conference (ESWC '11 Semantic Data Management Track, ESWC '12, ESWC '15)
Data Engineering Meets the Semantic Web, ICDE Workshop (DESWEB '12, DESWEB '14)
Workshop on Understanding the Positive and Negative Sides of Social Media (PANSOM '13 at IJCAI '13)
17th Panhellenic Conference on Informatics (PCI '13 Special Session in Real World Internet)
Workshop on Metrics, Analysis and Tools for Online Community Management (MAMA '13 at INFORMATIK 2013)
1st International IFIP Working Conference on Value-Driven Social Semantics & Collective Intelligence (VaSCo '13 at ACM Web Science 2013)
Euro-Par Conference (Euro-Par '13 Co-Chair P2P track)
IEEE International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP '13)
ACM Web Science (WebSci '12 & WebSci '13)
Knowledge-based and Intelligent Information & Engineering Systems 2011, Invited Session on Advanced Knowledge-based Systems (KES '11)
International Semantic Web Conference (ISWC '09)
International Conference on Advances in P2P Systems (AP2PS '09 & AP2PS '10)
International Conference on Advanced Engineering Computing and Applications in Sciences (ADVCOMP '09 & ADVCOMP '10)

 
Invited Reviews
 
Journal of Computer Communications (ComCom), 2011 & 2015
Journal of Web Semantics (JWS), 2009, 2012 & 2014
ACM Transactions on Internet Technology (TOIT), Special Issue "Foundations of Social Computing", 2014
IEEE Information Visualization (InfoVis), 2013
Journal of Network and Computer Applications (JNCA), 2013
Sensors, 2012
Journal on Data Semantics (JoDS), 2012
Journal of Computer and System Sciences (JCSS), 2012
IEEE Transactions on Knowledge and Data Engineering (TKDE), 2009, 2010 & 2012
Data & Knowledge Engineering Journal (DKE), 2010 & 2011
International Journal of Knowledge and Learning (IJKL), 2010 & 2011
World Wide Web Internet and Web Information Systems (WWWJ) - Special Issue "Querying the Data Web", 2010

 
Co-Reviewing
 
Co-reviews for several major journals (IJCSSE) and conferences (WWW, RecSys, P2P, MDM, DEBS, ASONAM, ICDM, GC NGNPS, ISWC, RR)


Certificates & Awards

Databases

IBM Certified Advanced Database Administrator -- DB2 Universal Database V8.1 for Linux UNIX and Windows
IBM Certified Database Administrator -- DB2 Universal Database V8.1 for Linux UNIX and Windows
IBM Certified Database Associate -- DB2 Universal Database V8.1 Family

Languages



e-Xplore Technical English!®
a WebCourse in ESP (English for Specific Purposes)
focussing on ICT (Information and Communication Technology)
at an advanced level of English (C1.1 CEF)

 

 

Awards

Most promising students award of the Cantor consultancy 2004

Other



Occupational First Aid
a Course of Instruction in accordance with the Health and Safety Authority Syllabus,
Galway County Council
(FETAC Component Certificate Level 5)

 

 


Teaching

Besides supervising, co-supervising, examining and mentoring several Ph.D., Diploma and Master theses, Marcel Karnstedt was responsible for the following courses and lectures in Ilmenau:

Winter 2008/09

Exercises "Algorithms & Programming" (MT1, BT5)
Preparation course "Algorithms & Programming" (AP2, AP3)

Summer 2008

Database Implementation Techniques (Course & Exercises)
Software Project "Design and Implementation of a Web Portal for Practical Exercises in the Field of Database Courses"

Winter 2007/08

Seminar "Predictability and Real-time Guarantees in Database Systems"
Exercises "Algorithms & Programming"
Preparation course "Algorithms & Programming"

Summer 2007

Exercises "Database Implementation Techniques" - Project ToyDB
Seminar "Internet scaled experiments on PlanetLab"

Winter 2006/07

Exercises "Data Warehouse Technologies"
Seminar "Self-Managing-Features in DBMS"

Summer 2006

Exercises "Database Implementation Techniques" - Project ToyDB
Seminar "PostgreSQL Hacking"

Winter 2005/06

Data-Warehousing und KDD - Exercises
Seminar "Clustered Databases & DB-Tuning"

Summer 2005

Exercises "Database Implementation Techniques - Project ToyDB
Seminar "Approximate Queries in Databases"

Winter 2004/05

Database Systems (IN, II, WI, MT) - Exercises
Databases (AMW) - Exercises
Seminar "Database Administration & Tuning"

Summer 2004

Database Implementation Techniques - Exercises (Project ToyDB)
Database Systems - Exercises
Seminar "Data Integration using XML"

Winter 2003/04

Crashcourse: IBM's DB2 Universal Database

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  Last update:  Sat, 19 Jun 2010