The phrase "attack relation" is not standard in written English and may cause confusion.
It could potentially be used in a specific context related to discussions of conflict or aggression, but clarity is essential.
Example: "The researchers examined the attack relation between the two rival factions during the conflict."
Alternatives: "hostility connection" or "aggression link".
Any user of structured argumentation still faces a fundamental problem of determining an appropriate attack relation for her/his application and further principles that could help in identifying such attack relation.
The changing of arguments and their attack relation is an intrinsic property of a variety of argumentation systems.
A Dung argumentation framework is instantiated by arguments and a binary conflict based attack relation, defined by some underlying logical theory.
Some of these extensions concern the nature of the attack relation, such as the consideration of recursive attacks, whereas others incorporate additional interactions, such as a support relation.
This gives rise to a directed graph, the abstract argumentation framework, where arguments are nodes and arrows represent the attack relation.
Where Args is the set of the arguments that are generated from Γ by the rules in SRules and DRules, we define an attack relation ↝ ⊆ Args × Args as follows: a ↝ b if and only if a attacks (e.g., rebuts or undercuts) b.
Furthermore, we provide additional postulates that help us prove characterisation results for these attack relations.
While the proposed principles and properties are helpful, they do not identify unique attack relations.
In the first part, we propose desirable properties of attack relations in the form of postulates and classify several well-known attack relations from the literature with regards to the satisfaction of these postulates.
We then conduct a comprehensive study of the status of these postulates in the context of the various combinations of attack relations and extension semantics.
Since the Khobar attack, relations have been on the mend, with Prince Nayef himself signing a security pact with Tehran in April.
