Abstract dialectical frameworks (ADFs) have recently been proposed as a versatile generalization of Dung''s abstract argumentation frameworks (AFs). In this paper, we present a comprehensive analysis of the computational complexity of ADFs. Our results show that while ADFs are one level up in the polynomial hierarchy compared to AFs, there is a useful subclass of ADFs which is as complex as AFs while arguably offering more modeling capacities. As a technical vehicle, we employ the approximation fixpoint theory of Denecker, Marek and Truszczyński, thus showing that it is also a useful tool for complexity analysis of operator-based semantics.
Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:12226 |
Date | 22 January 2014 |
Creators | Straß, Hannes, Wallner, Johannes Peter |
Contributors | Universität Leipzig, Technische Universität Wien |
Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
Language | English |
Detected Language | English |
Type | info:eu-repo/semantics/submittedVersion, doc-type:workingPaper, info:eu-repo/semantics/workingPaper, doc-type:Text |
Rights | info:eu-repo/semantics/openAccess |
Relation | urn:nbn:de:bsz:15-qucosa-154857, qucosa:11933 |
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