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Intelligent Service Robotics

, Volume 6, Issue 1, pp 5–18 | Cite as

Temporal logic for process specification and recognition

  • Arne Kreutzmann
  • Immo Colonius
  • Diedrich Wolter
  • Frank Dylla
  • Lutz Frommberger
  • Christian Freksa
Special Issue

Abstract

Acting intelligently in dynamic environments involves anticipating surrounding processes, for example to foresee a dangerous situation by recognizing a process and inferring respective safety zones. Process recognition is thus key to mastering dynamic environments including surveillance tasks. In this paper, we are concerned with a logic-based approach to process specification, recognition, and interpretation. We demonstrate that linear temporal logic (LTL) provides the formal grounds on which processes can be specified. Recognition can then be approached as a model checking problem. The key feature of this logic-based approach is its seamless integration with logic inference which can sensibly supplement the incomplete observations of the robot. Furthermore, logic allows us to query for process occurrences in a flexible manner and it does not rely on training data. We present a case study with a robotic observer in a warehouse logistics scenario. Our experimental evaluation demonstrates that LTL provides an adequate basis for process recognition.

Keywords

Knowledge representation Linear temporal logic (LTL) Process recognition 

Notes

Acknowledgments

This paper presents work carried out in the project R3-[Q-Shape] of the Transregional Collaborative Research Center SFB/TR 8 Spatial Cognition. Financial support by the German Research Foundation (DFG) is gratefully acknowledged. We like to thank Udo Frese for his valuable comments and his support in extending the TreeMap-algorithm. We also thank the anonymous reviewers for their helpful comments.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Arne Kreutzmann
    • 1
  • Immo Colonius
    • 1
  • Diedrich Wolter
    • 1
  • Frank Dylla
    • 1
  • Lutz Frommberger
    • 1
  • Christian Freksa
    • 1
  1. 1.SFB/TR 8 Spatial CognitionUniversity of BremenBremenGermany

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