Matthias J. Sax

In theory there is no difference between theory and practice—but in practice there is. (Y. Berra)

If we knew what it was we were doing, it would not be called research, would it? (A. Einstein)

Research

• Massively Parallel Execution of Data-Flow Programs (MapReduce Paradigm)
• Distributed/Parallel Streaming Systems
• Adaptive Query Processing and Continuous Query Optimization
• Cloud Computing

Projects

• Since 04/2011 research fellow of research training group METRIK
  • Poster: Cloud Based Data Analytics for Disaster Management
  • Talk: Efficient Clustering of Geo-Spatial Timeseries using Parallel Dataflow Programs (GIS Day 2012; GFZ Potsdam)
• Stratosphere—Above the Clouds
  • Release 0.2 now available to be downloaded

Publications

2013

• Aeolus: An Optimizer for Distributed Intra-Node-Parallel Streaming Systems (Demo) (Abstract)
  Matthias J. Sax, Malu Castellanos, Qiming Chen, Meichun Hsu
  To appear in 29th IEEE International Conference on Data Engineering (ICDE), Brisbane, Australia, 2013/04 (pdf) (link)

• Performance Optimization for Distributed Intra-Node-Parallel Streaming Systems (Abstract)
  Matthias J. Sax, Malu Castellanos, Qiming Chen, Meichun Hsu
  To appear in 8th International Workshop on Self-Managing Database Systems (SMDB) in conjunction with ICDE, Brisbane, Australia, 2013/04 (pdf) (ppt) (link)

2012

• Opening the Black Boxes in Data Flow Optimization (Abstract)
  Fabian Hueske, Mathias Peters, Matthias J. Sax, Astrid Rheinländer, Rico Bergmann, Aljoscha Krettek, Kostas Tzoumas
  Proceedings of the 38th International Conference on Very Large Data Bases, PVLDB 5(11):1256-1267, Istanbul, Turkey, 2012/08 (pdf)

Poster

2012

• Visual Analytics Approach for the Assessment of Simulation Model Output (Abstract)
  Christian Fiebrig, Patrick Koethur, Matthias J. Sax, Mike Sips
  Presented at the 3rd International Conference on Data Analysis and Modeling in Earth Sciences (DAMES), Potsdam, Germany, 2012/10 (pdf)

Research Visits

• May to July 2012: Internship at Hewlett-Packard Laboratories (Palo Alto, CA)
  Information Analytics Lab (working with Umeshwar Dayal, Meichun Hsu, and Malu Castellanos)

Student Advisor

      Diplom Thesis (ongoing)

• Generierung und Vergleich von Charakteristika von Umweltsystemen in Zeitmessreihen (Christian Fiebrig)
  Second Advisor: Dr. Mike Sips (Geoforschungszentrum Potsdam)
• Survey on MapReduce-like Streaming Systems (Magdalena Soyka)
• Ausfallsicherheit für Streaming-Operatoren in Stratosphere (Marten Richert)

      Diplom Thesis

• Window-based Data Processing with Stratosphere (Fabian Fier)

      Seminar Papers

• Analysis of Sensor Data with the PACT Programming Model (Fabian Fier)
• Implementation des Competition Model in Stratosphere (Dennis Schneider)

Studies

• 10/2004 to 03/2011: student in computer science (Diplom [Master of Science]) at Humboldt-University of Berlin
  Diplom thesis: Dynamic Join Algorithm Switching at Query Execution Time
• 04/2008 to 03/2009: technical co-op (intern) at IBM (US), Silicon Valley Laboratory (San Jose, CA)
  DB2 for Unix, Linux and Windows, pureXML-Team
• 06/2009 to 12/2010: working student (intern) at SAP (Berlin)
  MaxDB/HANA
  Member of SAP FastTrack program

DBLP / Google Scholar
LinkedIn / Xing
Twitter: @MatthiasJSax