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Studia Logica

, Volume 79, Issue 1, pp 115–134 | Cite as

Alan: An Action Language For Modelling Non-Markovian Domains

  • Graciela GonzálezEmail author
  • Chitta Baral
  • Michael Gelfond
Article

Abstract

In this paper we present the syntax and semantics of a temporal action language named Alan, which was designed to model interactive multimedia presentations where the Markov property does not always hold. In general, Alan allows the specification of systems where the future state of the world depends not only on the current state, but also on the past states of the world. To the best of our knowledge, Alan is the first action language which incorporates causality with temporal formulas. In the process of defining the effect of actions we define the closure with respect to a path rather than to a state, and show that the non-Markovian model is an extension of the traditional Markovian model. Finally, we establish relationship between theories of Alan and logic programs.

Keywords

Markovian Model Mathematical Logic Logic Program Temporal Action Future State 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • Graciela González
    • 1
    Email author
  • Chitta Baral
    • 2
  • Michael Gelfond
    • 3
  1. 1.Dept. of Computer ScienceSam Houston State UniversityHuntsvilleU.S.A.
  2. 2.Dept. of Computer ScienceArizona State UniversityTempeUSA
  3. 3.Dept. of Computer ScienceTexas Tech UniversityLubbockU.S.A.

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