Nonmonotonicity and the Scope of Reasoning: Preliminary Report
نویسندگان
چکیده
Existing formalisms for default reasoning capture some aspects of the nonmonotonicity of human com-monsense reasoning. However, Perlis has shown that one of these formalisms, circumscription, is subject to certain counterintuitive limitations. Kraus and Perlis suggested a partial solution, but signiicant problems remain. In this paper, we observe that the unfortunate limitations of circumscription are even broader than Perlis originally pointed out. Moreover, these problems are not connned to circumscription; they appear to be endemic in current nonmonotonic reasoning formalisms. We develop a much more general solution than that of Kraus and Perlis, involving restricting the scope of nonmonotonic reasoning, and show that it remedies these problems in a variety of formalisms.
منابع مشابه
the Scope of Reasoning: Preliminary Report
Existing formalisms for default reasoning capture some aspects of the nonmonotonicity of human commonsense reasoning. However, Perlis has shown that one of these formalisms, circumscription, is subject to certain counterintuitive limitations. Kraus and Perlis suggested a partial solution, but significant problems remain. In this paper, we observe that the unfortunate limitations of circumscript...
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Circumscription, Default Logic, and Autoepistemic Logic capture aspects of the nonmonotonicity of human commonsense reasoning. However, Perlis has shown that circumscription suuers from certain counterintuitive limitations, concerning exceptions or \counterexam-ples" to defaults. We observe that the unfortunate limitations of circumscription are even broader than Perlis originally pointed out. ...
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