Dr. Conny Junghans

  • Office hours: Tuesday 1pm-3pm, Room 12c, INF 348, or by appointment


I received my Diploma in Computer Science from the Ilmenau University of Technology in 2005. I then joined the University of California at Davis and received my Ph.D. in Computer Science in December 2009. I've been a post-doctoral researcher at the Ruprecht-Karls-University of Heidelberg in the Database Systems Research group of Prof. Dr. Michael Gertz from 2009 until 2011.

Research Interests

  • Data mining in data streams
  • Resource-adaptive and quality-aware mining in data streams
  • Spatial and spatio-temporal data
  • Data and information quality
  • Data and knowledge management
  • Information security


  • Conny Junghans, Marcel Karnstedt, and Michael Gertz: Quality-Driven Resource-Adaptive Data Stream Mining. In SIGKDD Explorations, Volume 13, Issue 1, 78-88, 2011.
  • Jannik Strötgen, Michael Gertz, and Conny Junghans:
    An Event-centric Model for Multilingual Document Similarity.
    To appear: SIGIR '11: The 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, Beijing, China, July 2011.
  • Maik Häsner, Conny Junghans, Christian Sengstock, and Michael Gertz:
    Online Hot Spot Prediction in Road Networks.

    BTW 2011: Database Systems for Business, Technology and Web, Kaiserslautern, Germany, Mar 2011.
  • Conny Junghans and Michael Gertz:
    Modeling and Prediction of Moving Region Trajectories
    IWGS 2010, International Workshop on GeoStreaming, together with SIGSPATIAL 2010.
  • Conny Franke, Marcel Karnstedt, Daniel Klan, Michael Gertz, Kai-Uwe Sattler, Elena Chervakova:
    In-Network Detection of Anomaly Regions in Sensor Networks with Obstacles.
    Computer Science - Research and Development, Special issue "BTW 2009 Best Papers", 2009
    [bibtex] [pdf]
  • Conny Franke, Michael Gertz:
    ORDEN: Outlier Region Detection and Exploration in Sensor Networks.
    SIGMOD 2009 Demonstrations Track, Providence, Rhode Island, USA, June 2009
    [bibtex] [pdf]
  • Conny Franke, Marcel Karnstedt, Daniel Klan, Michael Gertz, Kai-Uwe Sattler, Wolfram Kattanek:
    In-Network Detection of Anomaly Regions in Sensor Networks with Obstacles.
    BTW 2009: Database Systems for Business, Technology and Web, Münster, Germany, Mar 2009
    [bibtex] [pdf]
  • Daniel Klan, Marcel Karnstedt, Christian Pölitz, Kai-Uwe Sattler, Conny Franke:
    Adaptive Burst Detection in a Stream Engine.
    SAC 2009: 24th Annual ACM Symposium on Applied Computing, Waikiki Beach, Hawaii, USA, Apr 2009
    [bibtex] [pdf]
  • Conny Franke, Michael Gertz:
    Detection and Exploration of Outlier Regions in Sensor Data Streams.
    SSTDM 2008: International Workshop on Spatial and Spatiotemporal Data Mining, In Cooperation with IEEE ICDM 2008, Pisa, Italy, December 2008
    [bibtex] [pdf]
  • Conny Franke, Omar Alonso:
    Collaborative Topic Tracking in an Enterprise Environment.
    ECIR 2008: 30th European Conference on Information Retrieval, Glasgow, Scotland, April 2008
    [bibtex] [pdf]
  • Marcel Karnstedt, Conny Franke, Mohamed Medhat 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
    [bibtex] [pdf]
  • Conny Franke, Marcel Karnstedt, Kai-Uwe 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
    [bibtex] [pdf]
  • Conny Franke, Michael Hartung, Marcel Karnstedt, Kai-Uwe Sattler:
    Quality-aware Mining of Data Streams.
    International Conference on Information Quality (ICIQ) 2005, Boston, USA
    [bibtex] [pdf]

Professional Activities

Program committee member

SSDBM 2010, SSDBM 2011, CIKM 2011 Demo program

External reviewer

CIKM 2010, ACM GIS 2009, CIKM 2009, EDBT 2009, ICDE 2009, ICIQ 2009, ACM GIS 2008, EDBT 2008, ICDE 2008, IFIP Sec 2008, SSDBM 2008, ICWE 2007