A conditional logic for abduction
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We propose a logic of abduction that (i) provides an appropriate formalization of the explanatory conditional, and that (ii) captures the defeasible nature of abductive inference. For (i), we argue that explanatory conditionals are non-classical, and rely on Brian Chellas’s work on conditional logics for providing an alternative formalization of the explanatory conditional. For (ii), we make use of the adaptive logics framework for modeling defeasible reasoning. We show how our proposal allows for a more natural reading of explanatory relations, and how it overcomes problems faced by other systems in the literature.
KeywordsAbduction Adaptive logics Conditional logic Non-monotonic logic
Research for this article was partially supported by the project “Logics of discovery, heuristics and creativity in the sciences” (PAPIIT, IN400514-3) granted by the National Autonomous University of Mexico (UNAM). We are greatly indebted to the Dirección General de Asuntos del Personal Académico (UNAM) and to the Programa de Becas Posdoctorales de la Coordinación de Humanidades (UNAM). We also thank Laura Leonides and two anonymous referees for their many helpful comments and suggestions regarding this paper.
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