Assumption-Based Argumentation with Preferences.
This website (www-abaplus.doc.ic.ac.uk)
carries the interface of ABAplus
Z. Bao, K. Čyras, F. Toni – ABAplus: Attack Reversal in Abstract and Structured Argumentation with Preferences),
a system that implements reasoning with the computational argumentation formalism ABA⁺
K. Čyras, F. Toni – ABA⁺: Assumption-Based Argumentation with Preferences).
ABA⁺ is a novel approach to handling preferences in structured argumentation.
It extends the well established structured argumentation formalism Assumption-Based Argumentation (ABA)
with a binary preference relation over assumptions.
The preferences are incorporated directly into the attack relation to reverse attacks.
On this website, the users can specify the individual components of an ABA⁺ framework
(i.e. rules, assumptions with their contraries, and preferences among assumptions).
The system then visualizes the ABA⁺ framework, computes extensions (under various semantics) and their conclusions,
at the same time allowing for a comparison between extensions.
In ABAplus, an ABA⁺ framework is specified as follows:
- myAsm(a). specifies that a is an assumption;
- contrary(a, x). specifies that x is the contrary of assumption a;
- myRule(h, [b1, …, bn]). specifies that h <- b1, …, bn is a rule;
- myPrefLT(b, a). specifies that assumption a is strictly preferred over assumption b;
- myPrefLE(b, a). specifies that assumption a is strictly or equally preferred over assumption b.
Either choose a file (with extension .pl) containing the specification of an ABA⁺ framework and UPLOAD
Or input an ABA⁺ framework in the box below and LOAD
For more information about ABA⁺ and/or to report any issues with/bugs of the system please contact
Kristijonas Čyras (email@example.com)
Francesca Toni (firstname.lastname@example.org).
The implementation has been carried out by Ziyi Bao (email@example.com),
under the Undergraduate Research Opportunities Programme (UROP, http://www.imperial.ac.uk/urop),
supervised by K. Čyras and F. Toni.