Publikation: A Brief Comparison of Pollock's Defeasible Reasoning and Ranking Functions
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For more than 20 years John Pollock is elaborating a detailed account of defeasible reasoning. Ranking theory as developed by me in Spohn (1988) "Ordinal Conditional Functions. A Dynamic Theory of Epistemic States" (but see also Spohn (2001) "Deterministic Causation") offers such an account, too. The paper first gives a very brief informal sketch of the two accounts. It then explains that the basic difference is that Pollock's theory is entirely computational, whereas mine is located at a regulative level. It continues to argue that Pollock's theory cannot bridge this difference and that its normative condition is therefore deficient. The final section shows, by contrast, that ranking theory provides ample means to bridge the difference.
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SPOHN, Wolfgang, 2002. A Brief Comparison of Pollock's Defeasible Reasoning and Ranking Functions. In: Synthese. 2002, 131, pp. 39-56. Available under: doi: 10.1023/A:1015004212541BibTex
@article{Spohn2002Brief-3477, year={2002}, doi={10.1023/A:1015004212541}, title={A Brief Comparison of Pollock's Defeasible Reasoning and Ranking Functions}, volume={131}, journal={Synthese}, pages={39--56}, author={Spohn, Wolfgang} }
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