1. Interpreting and explaining pagerank through argumentation semantics.
- Author
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Albini, Emanuele, Baroni, Pietro, Rago, Antonio, and Toni, Francesca
- Subjects
ALGORITHMS ,COMPREHENSION - Abstract
In this paper we show how re-interpreting PageRank as an argumentation semantics for a bipolar argumentation framework empowers its explainability. After showing that PageRank, naively re-interpreted as an argumentation semantics for support frameworks, fails to satisfy some generally desirable properties, we propose a novel approach able to reconstruct PageRank as a gradual semantics of a suitably defined bipolar argumentation framework, while satisfying these properties. We then show how the theoretical advantages afforded by this approach also enjoy an enhanced explanatory power: we propose several types of argument-based explanations for PageRank, each of which focuses on different aspects of the algorithm and uncovers information useful for the comprehension of its results. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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