Argument Theory Change Through Defeater Activation

Argument Theory Change applies classic belief change concepts to the area of argumentation. This intersection of fields takes advantage of the definition of a Dynamic Abstract Argumentation Framework, in which an argument is either active or inactive, and only in the former case it is taken into consideration in the reasoning process. An approach for an argument revision operator defined through deactivation of arguments can be found in the literature. The present article is inspired by that approach, and complements it by considering activation of arguments to define a revision operator.