A labeled argumentation framework

To increase the expressivity of an argumentation formalism, we propose adding meta-level information to the arguments in the form of labels representing quantifiable data such as reliability degree, strength measure, skill, time availability, or any other feature about arguments. The extra information attached to an argument is then used in the acceptability determination process. We present a Labeled Argumentation Framework (LAF), combining the knowledge representation capabilities provided by the Argument Interchange Format (AIF) with an Algebra of Argumentation Labels, enabling us to handle the labels associated with the arguments. These labels are propagated through an argumentative graph according to the relations of support, conflict, and aggregation between arguments. Through this process we obtain final labels attached to the arguments that are useful to determine their acceptability. (C) 2015 Elsevier B.V. All rights reserved.