tech,0-1-C90-3063,ak This paper proposes that <term> sentence analysis </term> should be treated as <term> defeasible reasoning </term> , and presents such a treatment for Japanese sentence analyses using an <term> argumentation system </term> by Konolige , which is a formalization of <term> defeasible reasoning </term> , that includes <term> arguments </term> and <term> defeat rules </term> that capture <term> defeasibility </term> . <term> Manual acquisition </term> of <term> semantic constraints </term> in <term> broad domains </term> is very expensive .
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