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  • Representation and reasoning with multi-point events

    Author(s)
    Wetprasit, R
    Sattar, A
    Khatib, L
    Griffith University Author(s)
    Sattar, Abdul
    Wetprasit, Rattana
    Year published
    2000
    Metadata
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    Abstract
    Allen's Interval Algebra (IA) and Vilain & Kautz's Point Algebra (PA) consider an interval and a point as basic temporal entities (i.e., events) respectively. However, in many situations we need to deal with recurring events that include multiple points, multiple intervals or combinations of points and intervals. In this paper, we present a framework to model recurring events as multi-point events (MPEs) by extending point algebra. The reasoning tasks are formulated as binary constraint satisfaction problems. We propose a polynomial time algorithm (based on van Beek's algorithm) for finding all feasible relations. For the ...
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    Allen's Interval Algebra (IA) and Vilain & Kautz's Point Algebra (PA) consider an interval and a point as basic temporal entities (i.e., events) respectively. However, in many situations we need to deal with recurring events that include multiple points, multiple intervals or combinations of points and intervals. In this paper, we present a framework to model recurring events as multi-point events (MPEs) by extending point algebra. The reasoning tasks are formulated as binary constraint satisfaction problems. We propose a polynomial time algorithm (based on van Beek's algorithm) for finding all feasible relations. For the problem of finding a consistent scenario, we propose a backtracking method with a local search heuristic. We also describe an implementation and a detail empirical evaluation of the proposed algorithms. Our empirical results indicate that the MPE-based approach performs better than the existing approaches.
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    Journal Title
    Constraints
    Volume
    5
    DOI
    https://doi.org/10.1023/A:1009878632517
    Subject
    Theory of computation
    History, heritage and archaeology
    Publication URI
    http://hdl.handle.net/10072/3289
    Collection
    • Journal articles

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