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Relentful Strategic Reasoning in Alternating-Time Temporal Logic

  • Fabio Mogavero
  • Aniello Murano
  • Moshe Y. Vardi
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6355)

Abstract

Temporal logics are a well investigated formalism for the specification, verification, and synthesis of reactive systems. Within this family, alternating temporal logic, Atl *, has been introduced as a useful generalization of classical linear- and branching-time temporal logics by allowing temporal operators to be indexed by coalitions of agents. Classically, temporal logics are memoryless: once a path in the computation tree is quantified at a given node, the computation that has led to that node is forgotten. Recently, mCtl * has been defined as a memoryful variant of Ctl *, where path quantification is memoryful. In the context of multi-agent planning, memoryful quantification enables agents to “relent” and change their goals and strategies depending on their past history. In this paper, we define mAtl *, a memoryful extension of Atl *, in which a formula is satisfied at a certain node of a path by taking into account both the future and the past. We study the expressive power of mAtl *, its succinctness, as well as related decision problems. We also investigate the relationship between memoryful quantification and past modalities and show their equivalence. We show that both the memoryful and the past extensions come without any computational price; indeed, we prove that both the satisfiability and the model-checking problems are 2ExpTime-Complete, as they are for Atl *.

Keywords

Model Check Temporal Logic Multiagent System Atomic Proposition State Formula 
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-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Fabio Mogavero
    • 1
    • 2
  • Aniello Murano
    • 1
  • Moshe Y. Vardi
    • 2
  1. 1.Universitá degli Studi di Napoli ”Federico II”NapoliItaly
  2. 2.Department of Computer ScienceRice UniversityHoustonU.S.A.

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