Cross-system Optimization of Data-stream Queries

Cross-system Optimization of Data-stream Queries

(Third Party Funds Group – Sub project)

Overall project: FOR 1508: Dynamisch adaptierbare Anwendungen zur Fledermausortung mittels eingebetteter kommunizierender Sensorsysteme
Project leader:
Project members:
Start date: 08/01/12
End date: 12/31/18
Acronym: BATS-TP3
Funding source: DFG / Forschergruppe (FOR)


In resource-limited sensor networks an efficient data collection is particularly important.  For that, a distributed data-stream system is used, which has a query language that con activate and control the following four components:  The first is a central data management, which is created together with the sub-project 4 on network management and which can hide the heterogeneity of the sensor network.  The mobile and ground-based sensor nodes can have varying software and energy states.  Because of the resource limitations, the applications are distributed across several nodes.  The second component is an abstract model of the evaluation (a query), which is easy to create and still leaves lots of room for the implementation.  The query is model-based and thus can be transformed in many ways and can be executed efficiently.  The third component is a cost model for a quantitative assessment of datastream queries, e.g. with respect to energy efficiency.  Different optimization goals can be imagined here, for instance referring to the accuracy of flight trajectories.  And the fourth component finally consists of newly developed special operators and a description of the required accuracy, which allow for an advanced optimization to extend battery lifetime.



Project Heads

Dipl.-Inf. Sebastian Herbst

Prof. Dr. Klaus Meyer-Wegener

  • Job title: Holder of Chair
  • Address:
    Martensstraße 3
    91058 Erlangen
  • Phone number: +49 9131 85-27892
  • Email:

Outer office

  • Cécile Astor
    • Phone number: +49 9131 85-27893
    • Fax number: +49 9131 85-28854
    • Email:
    • Office hours: Weekly Mon, 8:30 - 14:00, Room 08.139,
      Weekly Tue, Wed, Thu, 8:30 - 13:30, Room 08.139,

Further Participants