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Timed Soft Concurrent Constraint Programs

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Coordination Models and Languages (COORDINATION 2008)

Part of the book series: Lecture Notes in Computer Science ((LNPSE,volume 5052))

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Abstract

We propose a timed and soft extension of Concurrent Constraint Programming. The time extension is based on the hypothesis of bounded asynchrony: the computation takes a bounded period of time and is measured by a discrete global clock. Action prefixing is then considered as the syntactic marker which distinguishes a time instant from the next one. Supported by soft constraints instead of crisp ones, tell and ask agents are now equipped with a preference (or consistency) threshold which is used to determine their success or suspension. In the paper we provide a language to describe the agents behavior, together with its operational and denotational semantics, for which we also prove the compositionality and correctness properties. Agents negotiating Quality of Service can benefit from this new language, by coordinating among themselves and mediating their preferences.

The first and fourth authors are supported by the MIUR PRIN 2005-015491.

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Authors and Affiliations

  1. Dipartimento di Scienze, Università “G. D’Annunzio” di Chieti-Pescara, Italy

    Stefano Bistarelli & Maria Chiara Meo

  2. Istituto di Informatica e Telematica (CNR), Pisa, Italy

    Stefano Bistarelli & Francesco Santini

  3. Dipartimento di Scienze dell’Informazione, Università di Bologna, Italy

    Maurizio Gabbrielli

  4. IMT - Institute for Advanced Studies, Lucca, Italy

    Francesco Santini

Authors
  1. Stefano Bistarelli
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  2. Maurizio Gabbrielli
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  3. Maria Chiara Meo
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  4. Francesco Santini
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Doug Lea Gianluigi Zavattaro

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Bistarelli, S., Gabbrielli, M., Meo, M.C., Santini, F. (2008). Timed Soft Concurrent Constraint Programs. In: Lea, D., Zavattaro, G. (eds) Coordination Models and Languages. COORDINATION 2008. Lecture Notes in Computer Science, vol 5052. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-68265-3_4

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  • DOI: https://doi.org/10.1007/978-3-540-68265-3_4

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-68264-6

  • Online ISBN: 978-3-540-68265-3

  • eBook Packages: Computer ScienceComputer Science (R0)

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