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Thomas Brinkhoff: Network-based Generator of Moving Objects

Introduction

The evaluation of spatiotemporal database systems or their components requires the definition of suitable benchmarks simulating the typical behavior of moving objects. Previous approaches do not consider one important property of moving objects: In many applications dealing with spatiotemporal data, the objects follow a given network. Therefore, benchmarks require datasets with such "network-based" moving objects. Important aspects for the generation of such objects are the maximum speed and the maximum capacity of connections, the influence of the other moving objects to the speed and the route of an object, the adequate determination of the start and destination of an object, the influence of external objects and events, and time-scheduled traffic. This observations led to the development of this generator for spatiotemporal data. It combines real data (the network) with user-defined specifications of the properties of the resulting dataset.

example

You find here a framework for testing and using the network-based generator.

Papers

Examples and Resources (Current Version 2.1.2, 2005-04-19)


Because of the bug fixes and improvements, it is strongly recommended not to use the versions 1.x and 2.0.

Downloads


Note for producing large sets of moving objects:

  • Disable the visualisation in the property file (and don't set a waiting period)!
  • If necessary, increase the memory allocation pool of the Java application launcher.


Frequently Asked Questions (last update 2006-03-29, please read them)

Data Files (for all versions)

Tools

Web Interface

Links to Other Spatiotemporal Data Generators

 

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