Implicit knowledge in unawareness structures.

Awareness structures by Fagin, Halpern (Artif Intell 34:39–76, 1988) (FH) feature a syntactic awareness correspondence and accessibility relations modeling implicit knowledge. They are a flexible model of unawareness, and best interpreted from an outside modeler’s perspective. Unawareness structures...

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Publicado en:Synthese Vol. 204; no. 5; pp. 1 - 42
Autores principales: Belardinelli, Gaia, Schipper, Burkhard C.
Formato: Artículo
Publicado: Springer Nature Nov2024
Acceso en línea:Ver este registro en EBSCOhost
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          Belardinelli, Gaia
          Schipper, Burkhard C.
        affil:
          https://ror.org/00f54p054 Department of Philosophy, Stanford University, Palo Alto, USA
          Department of Economics, University of California, Davis, USA
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      keyword:
        Awareness
        C70
        D83
        Explicit knowledge
        Implicit knowledge
        Unawareness
      ab: Awareness structures by Fagin, Halpern (Artif Intell 34:39–76, 1988) (FH) feature a syntactic awareness correspondence and accessibility relations modeling implicit knowledge. They are a flexible model of unawareness, and best interpreted from an outside modeler’s perspective. Unawareness structures by Heifetz et al. (J Econ Theory, 130:78–94, 2006, Games Econ Behav 62:305–324, 2008) (HMS) model awareness by a lattice of state spaces and explicit knowledge via possibility correspondences. Sublattices thereof can be interpreted as subjective views of agents. Open questions include (1) how implicit knowledge can be defined in HMS structures, and (2) in which way FH structures can be extended to model the agents’ subjective views. In this paper, we address (1) by defining implicit knowledge such that it is consistent with explicit knowledge in HMS models. We also introduce a variant of HMS models that instead of explicit knowledge, takes implicit knowledge and awareness as primitives. Further, we address (2) by introducing a category of FH models that are modally equivalent relative to sublanguages and can be interpreted as agents’ subjective views depending on their awareness. These constructions allow us to show an equivalence between HMS and FH models. As a corollary, we obtain soundness and completeness of HMS models with respect to the Logic of Propositional Awareness, based on a language featuring both implicit and explicit knowledge.
      pubtype: Academic Journal
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    language: English
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