Aktueller Kontakt: DERI - Digital Enterprise Research Institute UIMR - Unit for Information Mining and Retrieval NUIG - National University of Ireland, Galway IDA Business Park, Lower Dangan Galway, Ireland Tel: +353 (0) 91 49 4034 FAX: +353 (0) 91 49 5541 E-Mail: marcel.karnstedt[at]deri.org PGP: public PGP-key

Marcel Karnstedt wurde 1977 in Halle (Saale), Deutschland, geboren. Sein Diplom (M.Sc.) wurde ihm Ende 2003 durch die Martin-Luther-Universität Halle-Wittenberg, Deutschland, verliehen. Von Januar 2004 bis Februar 2009 arbeitete er als wissenschaftlicher Mitarbeiter am Fachgebiet Datenbanken & Informationssysteme (Leitung: Prof. Dr.-Ing. habil. Kai-Uwe Sattler) der Technischen Universität Ilmenau, Deutschland. Dort hat er auch seine Promotion erfolgreich beendet (summa cum laude). Seit März 2009 ist er als Postdoc am Digital Enterprise Research Institute (DERI), National University of Ireland, Galway (NUIG), angestellt. Er ist dort Mitglied der Unit for Information Mining and Retrieval (UIMR) und beteiligt am CLIQUE-Projekt zur Analyse und Visualisierung von extrem grossen Graphen und Netzwerken, speziell sozialen und biologischen Netzwerken. Seit Dezember 2009 hat er zudem eine außerordentliche Dozentur an der NUIG inne.

	Infrastrukturen und Techniken für Mining auf und Generation von extrem großen Graphen
	Social Network Analysis-Techniken in Web Graphen und On-line Communities
	Verteilte universelle Datensysteme auf Internet-Größe, P2P-Datenbanken
	Verteilte Verarbeitung und Optimierung von Anfragen in Peer-to-Peer-Systemen
	Ressourcen-adaptives und Qualitäts-bewusstes Mining auf Datenströmen

		M. Karnstedt: Query Processing in a DHT-Based Universal Storage - The World as a Peer-to-Peer Database, Dissertationsschrift an der Technischen Universität Ilmenau, FG Datenbanken und Informationssysteme, 2009. Buch erhältlich bei Amazon.de Abstract veröffentlicht in Datenbank Spektrum 31/09, Dez. 2009, pp. 53-54
Online-Version

Marcel Karnstedt, Tara Hennessy, Jeffrey Chan, Conor Hayes, Thorsten Strufe: Churn in Social Networks, Handbook of Social Networks: Technologies and Applications, Springer Verlag 2010, to appear.

	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, Dez. 2008, pp. 37-41, dpunkt.verlag

	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, extended abstract accepted for presentation, full paper submitted.
	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, to appear.
	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.

	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, to appear.
	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, to appear.
	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.

	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, Diplomarbeit 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.

Mitgliedschaften

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

Vorträge

	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]

Perspektiven

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

Reviewing

	International Semantic Web Conference 2009 (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)

	Data & Knowledge Engineering Journal (DKE), 2010
	International Journal of Knowledge and Learning (IJKL), 2010
	World Wide Web Internet and Web Information Systems (WWWJ) - Special Issue "Querying the Data Web", 2010
	Journal of Web Semantics (JWS), 2009
	IEEE Transactions on Knowledge and Data Engineering (TKDE), 2009

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

Datenbanken

	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

Sprachen

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)

Auszeichnungen

Förderpreis der Cantor-Unternehmensberatung 2004

Sonstige

Erste Hilfe am Arbeitsplatz
ein Anleitungskurs im Einklang mit dem Health and Safety Authority Syllabus,
Galway County Council
(FETAC Component Certificate Level 5)

Wintersemester 2008/09

	Übung zur Vorlesung "Algorithmen & Programmierung" (MT1, BT5)
	Vorkurs zur LV "Algorithmen & Programmierung" (AP2, AP3)

Sommersemester 2008

	Datenbank-Implementierungstechniken (Vorlesung & Übung)
	Softwareprojekt "Konzeption und Entwicklung eines Web-Portals für praktische Übungen im Bereich Datenbanken"

Wintersemester 2007/08

	Hauptseminar "Vorhersagbarkeit und Echtzeitgarantien in Datenbanksystemen"
	Vorlesung "Algorithmen & Programmierung" - Übungen
	Vorkurs zur LV "Algorithmen & Programmierung"

Sommersemester 2007

	Übung Datenbank-Implementierungstechniken - Projekt ToyDB
	Projektseminar "Internetweit verteilte Experimente auf PlanetLab"

Wintersemester 2006/07

	Data-Warehouse-Technologien - Übungen
	Projektseminar "Self-Managing-Features in DBMS"

Sommersemester 2006

	Übung Datenbank-Implementierungstechniken - Projekt ToyDB
	Projektseminar "PostgreSQL Hacking"

Wintersemester 2005/06

	Data-Warehousing und KDD - Übungen
	Projektseminar "Cluster-Datenbanken & DB-Tuning"

Sommersemester 2005

	Übung Datenbank-Implementierungstechniken - Projekt ToyDB
	Hauptseminar "Approximative Anfragen in Datenbanken"

Wintersemester 2004/05

	Datenbanksysteme (IN, II, WI, MT) - Übungen
	Datenbanken (AMW) - Übungen
	Projektseminar "Datenbank-Administration & -Tuning"

Sommersemester 2004

	Datenbank-Implementierungstechniken - Übungen (Projekt ToyDB)
	Datenbanksysteme - Übungen
	Projektseminar "Datenintegration mit XML"

Wintersemester 2003/04

Crashkurs: DB2 Universal Database von IBM

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