Defeasible logic with dynamic priorities

Grigoris Antoniou

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Defeasible logic is a nonmonotonic reasoning approach based on rules and priorities. Its design supports efficient implementation, and it shows promise to be deployed successfully in applications. So far, only static priorities have been used, provided by an external superiority relation. In this article we show how dynamic priorities can be integrated, where priority information is obtained from the deductive process itself. Dynamic priorities have been studied for other related reasoning systems such as default logic and argumentation. We define a proof theory, study its formal properties, and provide an argumentation semantics.

Original languageEnglish
Pages (from-to)463-472
Number of pages10
JournalInternational Journal of Intelligent Systems
Issue number5
Early online date1 Apr 2004
Publication statusPublished - 1 May 2004
Externally publishedYes


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