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13 December 2019Top of Page

A paper on the web version of Gorgias-B, promising simpler HMI and richer user experience is to be presented as a poster and will be included in the proceedings of the 35th ACM/SIGAPP Symposium On Applied Computing, Brno, Czech Republic, March 30-April 3, 2020

Visit the conference web site...

6 December 2018Top of Page

Our paper with title "Gorgias: Applying Argumentation" has been published in the Journal "Argument & Computation", vol. 10, no. 1, pp. 55-81.

This paper presents the past and present efforts of developing real-life applications of argumentation with the Gorgias preference-based structured argumentation framework of Logic Programming with Priorities. Since its free availability on the web in 2003, the Gorgias system has been used by different groups in a variety of real-life applications in areas such as medical support, network security, business computing, ambient intelligence and, recently, in the area of cognitive personal assistants. We briefly review the Gorgias framework and its past applications and present an emerging general methodological approach for developing “decision making” applications of argumentation. This approach allows the development of real world applications directly from their high-level requirements expressed in the language of the application without the need for familiarity with the underlying technical details of argumentation. A new tool, called Gorgias-B, supports this high-level development of applications and automatically generates the underlying argumentation theory in Gorgias code. The paper also reports on ongoing real-life applications in two domains: an eye-clinic assistant for first level support, and systems for patient data access and data sharing agreements according to the relevant legislation and contracts or policies of the several stakeholders involved. The proposed approach is quite general for this type of applications of argumentation and, thus, it can be used with any preference-based argumentation framework.

Find the paper by following this link.

11 July 2017Top of Page

A new Gorgias-B version (1.4.5) has been released:

- Fixes a bug with file save in Linux.

17 May 2017Top of Page

A new Gorgias-B version (1.4.4) has been released:

- Allows the use of the \== SWI-prolog operator (system predicate for not equal numbers) in the scenarios conditions.

- Faster load/save/execute operations.

- A number of bug fixes.

17 March 2017Top of Page

A new Gorgias-B version (1.4.2) has been released:

- New menu structure. Options and their arguments have their own menu separated from the menu about knowledge (including defeasible and non-defeasible knowledge, along with arguments for beliefs).

- allows to argue for beliefs (menu Edit -> Arguments for Beliefs). Includes an updated tweety example.

- in the scenario editor along with the button for resolving conflicts there is another for returning to more simple scenarios. Thus, the user no longer needs to interact with the level combobox - however it remains there for experienced users.

- There is a script for running Gorgias-B (runGorgias.bat) in windows, another for launching Gorgias-B along with a free tree editing software to assist the developer with defining the specific contexts (runGorgiasWithTreeEditor.bat) again in Windows, and,

- A script for running Gorgias-B in Linux (runGorgias.sh)

- Also fixed a bug that prevented to show in the execution panel negations of beliefs.

15 March 2017Top of Page

Gorgias-B has been used to model the Cyprus legislation regarding medical data access policy. Moreover, a web application (MEDICA) has been developed that allows medical personel to search access rights on-line. The results of this application will be presented at the 30th International Conference on Industrial, Engineering & Other Applications of Applied Intelligent Systems (IEA/AIE 2017) and its Special Track on Applications of Argumentation (APPARG2017) in Arras, France. The conference will take place from 27-30 June 2017.

22 February 2017Top of Page

A new Gorgias-B version (1.4.1) has been released:

- allows to insert arguments for beliefs (menu Edit -> Arguments for Beliefs). Includes the tweety example.

- in the scenario editor there is a button for resolving conflicts that is becoming active when you have conflicting models

- automatically inserts a default object-level rule without preconditions for every option you define

- if at some level N (with application scenario S) you insert a priority rule R1 for option A over option B with preconditions P and at the same level there is a priority rule R2 for option B over option A without preconditions, then Gorgias-B inserts automatically a priority rule R3 of option A over option B for the extended application scenario {S, P} without preconditions at level N+1

- launches a free tree editing software to assist the developer with defining the specific contexts

19 October 2016Top of Page

A new Gorgias-B version (1.3.7) has been released:

- fixed a bug preventing many complements to be defined in the options view

7 October 2016Top of Page

A new Gorgias-B version (1.3.6) has been released. It offers:

- fixed a bug preventing negative abducibles from showing at the options view

- removed auto-save before execution for much better performance. The trade-off is that now the user must remember to save his work before executing scenarios.

13 September 2016Top of Page

A new Gorgias-B version (1.3.5) has been released. It offers:

- better execute view: no repeating arguments, no repeating lines within an argument

- better understanding of the situation of a general scenario, i.e. in the argue view, when the scenario has no predicates, the text "Generally among <option 1> and <option 2>..." appears insted of an empty line in the combo box

7 July 2016Top of Page

A presentation of the SoDA methodology and Gorgias-B system will take place at COREDEMA 2016 in The Hague, Holland (September 13th-16th 2016). COREDEMA is the 2nd International Workshop on Conflict Resolution in Decision Making is held in conjunction with the European Conference on Artificial Intelligence (ECAI) 2016. The aim of COREDEMA is to bring together researchers from the contributing disciplines to share their perspectives on conflict resolution and the ways their theories and techniques are incorporated in the state-of-the-art in computer science and artificial intelligence. Furthermore, the workshop intends to establish new collaborations to advance the latest computational models for conflict resolution. We are looking forward to having the opportunity to present our system to you there and get your feedback!

9 June 2016Top of Page

A demo of the The GorgiasB system will take place at COMMA 2016 in Potsdam, Germany (September 13th-16th 2016). The aim of the COMMA conference is to bring together researchers interested in computational models of argument and the representation of argumentation structures in natural language texts, including the problem of automatically discovering argumentation in text or speech. We are looking forward to having the opportunity to present our system to you there and get your feedback!

8 June 2016Top of Page

The GorgiasB system will be presented during the poster sessions of the ECAI 2016 in the Hague, Holland (29 August - 2 September 2016). The biennial European Conference on Artificial Intelligence (ECAI) is Europe�s premier venue for presenting scientific results in AI. Supported by the European Coordinating Committee for AI (ECCAI), the ECAI conference provides an opportunity for researchers to present and hear about the very best research in contemporary AI. We are looking forward to having the opportunity to present our system to you there and get your feedback!

13 May 2016Top of Page

Our extended abstract titled "Gorgias-B: Argumentation in Practice" has been selected for presentation at the Cardiff Argumentation Forum (CAF 2016). CAF is an open forum to anyone working or interested in argumentation and reasoning under uncertainty. Participants will be invited to give brief presentations, followed by question sessions intended to stimulate discussions. The event is organised by Federico Cerutti (School of Computer Science & Informatis at Cardiff University) and Francesca Toni (Department of Computing at Imperial College London). It will take place at Cardiff, UK, 06-07 July 2016. We will present the Gorgias-B system and look forward to your feedback.