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EMBArg: Extending Methods in Belief Change to Advance Dynamics in Argumentation


This project is funded by the Austrian Science Fund (FWF) under grant P 30168-N31.


Contents

News

2021


Project end

2021-09-30
This research project concluded on September 30th, 2021. We thank all project members and project partners for their invaluable work!

Presentation at NMR 2021

2021-08-11
Our work on "An AGM Approach to Revising Preferences" [42] will be presented at this year's edition of NMR.

Chapter in upcoming handbook and paper at ICLP 2021

2021-08-10
Our work on "Harnessing Incremental ASP Solving for Reasoning in Assumption-Based Argumentation" [41] was accepted to ICLP, and we contributed to the chapter on "Enforcement in Formal Argumentation" [40] part of the upcoming second volume of the Handbook of Formal Argumentation.

Papers accepted to JAIR and KR 2021

2021-06-29
Our work on "Declarative Algorithms and Complexity Results for Assumption-Based Argumentation" [38] was accepted to JAIR, and our work on "Existential Abstraction on Argumentation Frameworks via Clustering" [39] was accepted to KR'21.

2020


Papers accepted to AAAI 2021

2020-12-08
Our works on "Strong Explanations in Abstract Argumentation" [36] and "Ranking Sets of Defeasible Elements in Preferential Approaches to Structured Argumentation: Postulates, Relations, and Characterizations" [37] were accepted to AAAI'21.

Paper accepted to SAFA 2020

2020-08-10
Our work on "Labelling-based Algorithms for SETAFs" [35] will be presented at the SAFA'20 workshop.

Papers accepted to COMMA 2020

2020-06-19
Our work "Computing Strongly Admissible Sets" [34] was accepted to COMMA'20, and we will present a demo [33] of the ASPARTIX system suite at COMMA'20.

Publication at KR 2020

2020-06-04
Our work "An Answer Set Programming Approach to Argumentative Reasoning in the ASPIC+ Framework" [32] was accepted to KR'20.

Paper at ECAI 2020

2020-01-15
Our work on "Explaining Non-Acceptability in Abstract Argumentation" [31] was accepted to ECAI'20.

2019


Presentation at FoIKS 2020

2019-11-22
We will present our submission to the ICCMA'19 competition at FoIKS 2020 [30].

Paper at AAAI 2020

2019-11-11
Our work on "Proportional Belief Merging" [29] has been accepted to AAAI'20.

Article accepted to Argument & Computation

2019-09-19
Our work on "Structural Constraints for Dynamic Operators in Abstract Argumentation" [28] has been accepted to the Argument & Computation journal.

Article accepted to JAIR

2019-08-20
Our work on "Synthesizing Argumentation Frameworks from Examples" [27] has been accepted to JAIR.

Paper at IJCAI 2019

2019-08-16
We presented our work on "Belief Revision Operators with Varying Attitudes Towards Initial Beliefs" at IJCAI 2019 [26].

Article in AIJ

2019-07-22
Our work on "On the complexity of inconsistency measurement" was accepted to the Artificial Intelligence journal [25].

Presentation at the NTFA'19 workshop

2019-04-15
We will present our work on "Reasoning over Assumption-Based Argumentation Frameworks via Direct Answer Set Programming Encodings" [23] at the workshop on New Trends in Formal Argumentation.

Paper accepted to JELIA'19

2019-01-21
Our paper "Manipulating Skeptical and Credulous Consequences when Merging Beliefs" [24] was accepted to JELIA 2019.

2018


Paper accepted to AAAI'19

2018-11-06
Our paper "Reasoning over Assumption-Based Argumentation Frameworks via Direct Answer Set Programming Encodings" [23] has been accepted to AAAI 2019.

Presentation at TAASP workshop

2018-10-24
There will be a presentation on "Applications of ASP in Formal Argumentation" [22] at the TAASP 2018 workshop.

Two papers accepted to NMR'18

2018-09-10
Our papers "Belief Revision Operators with Varying Attitudes Towards Initial Beliefs" [20] and "Manipulation of Semantic Aggregation Procedures for Propositional Knowledge Bases and Argumentation Frameworks" [21] have been accepted to NMR 2018.

Two papers accepted to KR'18

2018-08-07
Our papers "Preference Aggregation with Incomplete CP-Nets" [19] (full paper) and "Extension Enforcement under Grounded Semantics in Abstract Argumentation" [18] (short paper) have been accepted to KR 2018.

Paper accepted to COMMA'18

2018-06-26
Our paper on "Structural Constraints for Dynamic Operators in Abstract Argumentation" [17] has been accepted to COMMA 2018.

Participation in IJCAI'18

2018-06-13
The project team contributed to the following four papers that have been accepted to IJCAI.

Participation in the workshop on argument strength

2018-04-10
Our project team participated in the workshop on argument strength with a talk on "strategic manipulation when merging argumentation frameworks". We thank the organizers for creating such an interesting event!

2017


Merry Christmas & article accepted to IJA

2017-12-06
Our paper "An extension-based approach to belief revision in abstract argumentation" [12] has been accepted to the International Journal of Approximate Reasoning.

Upcoming Publications

2017-11-14
We are happy to announce publication of recent works by the project team.

Participation in ICCMA'17

2017-10-11
We participated in the ICCMA'17 competition of AF solvers with our solver cegartix [5] and a benchmark submission [4]. Our solver scored generally in the top five of solvers. We thank the competition organizers for their important work for the community!

Paper presented at DKB-KIK 2017

2017-9-26
Our paper "Deviation in Belief Change on Fragments of Propositional Logic" [3] was presented at the DKB workshop in Dortmund, Germany.

Paper accepted to JAIR

2017-8-16
We are happy to announce that our paper "Complexity Results and Algorithms for Extension Enforcement in Abstract Argumentation" has been accepted to JAIR [2].

Workshop on New Trends in Formal Argumentation

2017-8-10
We are co-organizing the workshop on "New Trends in Formal Argumentation", taking place August 17 at TU Vienna. Sanjay Modgil and Leon van der Torre, two well-established researchers, will give invited talks at the workshop.

Happy Easter and ECSQARU acceptance

2017-04-14
Our paper "From Structured to Abstract Argumentation: Assumption-Based Acceptance via AF Reasoning" [1] has been accepted at ECSQARU'17.

Project start

2017-04-01
The EMBArg project has started in April 2017 and will have a duration of three years.
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Project team

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Goal of the project

Central to the study of dynamically evolving knowledge is the field of belief change. The AGM approach, that emerged from belief change, offers a versatile and well-established framework for investigating knowledge or beliefs “in flux”. Recently, dynamics in argumentation - a core topic in AI with inherent need for adaptation of knowledge - has steadily gained interest among researchers, aiming at developing formal methods for change. However, limitations of existing approaches have prevented the emergence of a clear and unified picture, since many approaches focus only on one, albeit fundamental, formal model, leaving dynamic methods for more sophisticated formalisms open. For the task of revision of knowledge, recent works in belief change have shown that general-purpose frameworks, exporting the core intuitions of the AGM approach to many formal models, are feasible, with mild requirements on the formal models. Application of these frameworks to argumentation faces a crucial barrier, however, since some of the core dynamic operations in argumentation - foremost that of enforcing acceptability of arguments - are significantly different than operators studied in belief change. Hence, there is a significant gap between the state of the art in belief change and the requirements of argumentation “in flux”. Nevertheless, belief change remains uniquely suited to handle the dynamics of argumentation. This project seeks to address the current shortcomings with a threefold approach. We aim to


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Related webpages and projects

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Publications

2021

[42] An AGM Approach to Revising Preferences
Adrian Haret and Johannes P. Wallner.
Accepted to NMR.
[41] Harnessing Incremental ASP Solving for Reasoning in Assumption-Based Argumentation
Tuomo Lehtonen, Johannes P. Wallner, and Matti Järvisalo.
Accepted to ICLP.
arxiv ]
[40] Enforcement in Formal Argumentation
Ringo Baumann, Sylvie Doutre, Jean-Guy Mailly, and Johannes P. Wallner.
To appear in the second volume of the Handbook of Formal Argumentation.
chapter in the Journal of Applied Logics ]
[39] Existential Abstraction on Argumentation Frameworks via Clustering
Zeynep G. Saribatur and Johannes P. Wallner.
Accepted to KR.
[38] Declarative Algorithms and Complexity Results for Assumption-Based Argumentation
Tuomo Lehtonen, Johannes P. Wallner, and Matti Järvisalo.
Journal of Artificial Intelligence Research, Vol. 71, pp. 265-318. 2021
DOI | conference version: [47] ]
[37] Ranking Sets of Defeasible Elements in Preferential Approaches to Structured Argumentation: Postulates, Relations, and Characterizations
Jan Maly and Johannes P. Wallner.
In Proceedings of the Thirty-Fifth AAAI Conference on Artificial Intelligence, AAAI 2021, pages 6435-6443, February 2021
link ]
[36] Strong Explanations in Abstract Argumentation
Markus Ulbricht and Johannes P. Wallner.
In Proceedings of the Thirty-Fifth AAAI Conference on Artificial Intelligence, AAAI 2021, pages 6496-6504, February 2021
link ]

2020

[35] Labelling-based Algorithms for SETAFs
Wolfgang Dvořák, Anna Rapberger, and Johannes P. Wallner.
In Sarah A. Gaggl, Matthias Thimm, and Mauro Vallati, editors, Proceedings of the Third International Workshop on Systems and Algorithms for Formal Argumentation, SAFA 2020, pages 34-46, 2020.
.pdf ]
[34] Computing Strongly Admissible Sets
Wolfgang Dvořák and Johannes P. Wallner.
In Henry Prakken, Stefano Bistarelli, Francesco Santini, and Carlo Taticchi, editors, Proceedings of the Eighth International Conference on Computational Models of Argument, COMMA 2020, pages 179-190, 2020.
DOI ]
[33] The ASPARTIX system suite (system demo)
Wolfgang Dvořák, Sarah A. Gaggl, Anna Rapberger, Johannes P. Wallner, and Stefan Woltran.
In Henry Prakken, Stefano Bistarelli, Francesco Santini, and Carlo Taticchi, editors, Proceedings of the Eighth International Conference on Computational Models of Argument, COMMA 2020, pages 461-462, 2020.
DOI ]
[32] An Answer Set Programming Approach to Argumentative Reasoning in the ASPIC+ Framework
Tuomo Lehtonen, Johannes P. Wallner, and Matti Järvisalo.
In Diego Calvanese, Esra Erdem, and Michael Thielscher, editors, Proceedings of the 17th International Conference on Principles of Knowledge Representation and Reasoning, KR 2020, pages 636-646, 2020
DOI ]
[31] Explaining Non-Acceptability in Abstract Argumentation
Zeynep G. Saribatur, Johannes P. Wallner, and Stefan Woltran.
In Giuseppe De Giacomo, Alejandro Catala, Bistra Dilkina, Michela Milano, Senén Barro, Alberto Bugarín, and Jérôme Lang, editors, Proceedings of the 24th European Conference on Artificial Intelligence, ECAI 2020, pages 881-888, 2020. DOI | .pdf ]
[30] ASPARTIX-V19 - An Answer-set Programming based System for Abstract Argumentation
Wolfgang Dvořák, Anna Rapberger, Johannes P. Wallner, and Stefan Woltran.
In Andreas Herzig and Juha Kontinen, editors, Proceedings of the Eleventh International Symposium on Foundations of Information and Knowledge Systems, FoIKS 2020, pages 79-89, Dortmund, Germany, 2020
DOI ]
[29] Proportional Belief Merging
Adrian Haret, Martin Lackner, Andreas Pfandler, and Johannes P. Wallner.
In Vincent Conitzer and Fei Sha, editors, Proceedings of the Thirty-Fourth AAAI Conference on Artificial Intelligence, AAAI 2020, pages 2822-2829, New york, USA, February 2020
DOI | .pdf ]
[28] Structural Constraints for Dynamic Operators in Abstract Argumentation
Johannes P. Wallner.
Argument & Computation. Vol. 11(1-2), pp. 151-190. 2020
DOI ]

2019

[27] Synthesizing Argumentation Frameworks from Examples
Andreas Niskanen, Johannes P. Wallner, and Matti Järvisalo.
Journal of Artificial Intelligence Research, Vol. 66, pp. 503-554. 2019
DOI ]
[26] Belief Revision Operators with Varying Attitudes Towards Initial Beliefs
Adrian Haret and Stefan Woltran.
In Sarit Kraus, editor, Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence, IJCAI 2019, pages 1726-1733, Macau, China 2019
DOI ]
[25] On the complexity of inconsistency measurement
Matthias Thimm and Johannes P. Wallner.
Artificial Intelligence, Vol. 275, pp. 411-456. 2019
DOI ]
[24] Manipulating Skeptical and Credulous Consequences when Merging Beliefs
Adrian Haret and Johannes P. Wallner.
In Francesco Calimeri, Nicola Leone, and Marco Manna, editors, Proceedings of the 16th European Conference on Logics in Artificial Intelligence, JELIA 2019, pages 133-150, Rende, Italy, 2019
DOI | technical report (with proof details) ]
[23] Reasoning over Assumption-Based Argumentation Frameworks via Direct Answer Set Programming Encodings
Tuomo Lehtonen, Johannes P. Wallner, and Matti Järvisalo.
In Pascal Van Hentenryck and Zhi-Hua Zhou, editors, Proceedings of the Thirty-Third AAAI Conference on Artificial Intelligence, AAAI 2019, pages 2938-2945, Honolulu, Hawaii USA, January 2019
DOI | .pdf ]

2018

[22] Applications of ASP in Formal Argumentation
Martin Diller, Wolfgang Dvořák, Jörg Pührer, Johannes P. Wallner, and Stefan Woltran.
Presented at the TAASP 2018 workshop.
.pdf ]
[21] Manipulation of Semantic Aggregation Procedures for Propositional Knowledge Bases and Argumentation Frameworks
Adrian Haret, and Johannes P. Wallner.
In Eduardo Fermé and Serena Villata, editors, Proceedings of the 17th International Workshop on Non-monotonic Reasoning, NMR 2018, pages 146-155, Tempe, USA, October 2018
proceedings ]
[20] Belief Revision Operators with Varying Attitudes Towards Initial Beliefs
Adrian Haret, and Stefan Woltran.
In Eduardo Fermé and Serena Villata, editors, Proceedings of the 17th International Workshop on Non-monotonic Reasoning, NMR 2018, pages 156-165, Tempe, USA, October 2018
proceedings ]
[19] Preference Aggregation with Incomplete CP-Nets
Adrian Haret, Arianna Novaro, and Umberto Grandi.
In Michael Thielscher, Francesca Toni, and Frank Wolter, editors, Proceedings of the 16th International Conference on Principles of Knowledge Representation and Reasoning, KR 2018, pages 308-318, Tempe, USA, October 2018
url | .pdf ]
[18] Extension Enforcement under Grounded Semantics in Abstract Argumentation
Andreas Niskanen, Johannes P. Wallner, and Matti Järvisalo
In Michael Thielscher, Francesca Toni, and Frank Wolter, editors, Proceedings of the 16th International Conference on Principles of Knowledge Representation and Reasoning, KR 2018, pages 178-183, Tempe, USA, October 2018
url | .pdf ]
[17] Structural Constraints for Dynamic Operators in Abstract Argumentation
Johannes P. Wallner.
In Sanjay Modgil, Katarzyna Budzynska, John Lawrence, editors, Proceedings of the 7th International Conference on Computational Models of Argument, COMMA 2018, pages 73-84, Warsaw, Poland, September 2018
DOI | .pdf ]
[16] Two Sides of the Same Coin: Belief Revision and Enforcing Arguments
Adrian Haret, Johannes P. Wallner, and Stefan Woltran.
In Jérôme Lang, editor, Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, IJCAI 2018, pages 1854-1860, Stockholm, Sweden, July 2018
DOI | .pdf ]
[15] Novel Algorithms for Abstract Dialectical Frameworks based on Complexity Analysis of Subclasses and SAT Solving
Thomas Linsbichler, Marco Maratea, Andreas Niskanen, Johannes P. Wallner, and Stefan Woltran.
In Jérôme Lang, editor, Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, IJCAI 2018, pages 1905-1911, Stockholm, Sweden, July 2018
DOI | system page | .pdf ]
[14] Belief Update in the Horn Fragment
Nadia Creignou, Adrian Haret, Odile Papini, and Stefan Woltran.
In Jérôme Lang, editor, Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, IJCAI 2018, pages 1781-1787, Stockholm, Sweden, July 2018
DOI | .pdf ]
[13] Ceteris Paribus Majority for Social Ranking
Adrian Haret, Hossein Khani, Stefano Moretti, and Meltem Öztürk.
In Jérôme Lang, editor, Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, IJCAI 2018, pages 303-309, Stockholm, Sweden, July 2018
DOI | .pdf ]
[12] An extension-based approach to belief revision in abstract argumentation
Martin Diller, Adrian Haret, Thomas Linsbichler, Stefan Rümmele, and Stefan Woltran.
International Journal of Approximate Reasoning, Vol. 93, pp. 395-423. 2018
DOI ]
[11] Weighted Abstract Dialectical Frameworks
Gerhard Brewka, Hannes Strass, Johannes P. Wallner, and Stefan Woltran.
In Sheila A. McIlraith and Kilian Q. Weinberger, editors, Proceedings of the Thirty-Second AAAI Conference on Artificial Intelligence, AAAI 2018, pages 1779-1786, New Orleans, Louisiana, USA, February 2018
extended and revised version ]
[10] Foundations of Implementations for Formal Argumentation
Federico Cerutti, Sarah A. Gaggl, Matthias Thimm and Johannes P. Wallner.
In Pietro Baroni, Dov Gabbay, Massimiliano Giacomin and Leendert van der Torre, editors, Handbook of Formal Argumentation, chapter 14, pages 688-767. 2018
reposiTUm ]
[9] Abstract Dialectical Frameworks.
Gerhard Brewka, Stefan Ellmauthaler, Hannes Strass, Johannes P. Wallner, and Stefan Woltran.
In Pietro Baroni, Dov Gabbay, Massimiliano Giacomin and Leendert van der Torre, editors, Handbook of Formal Argumentation, chapter 5, pages 237-285. 2018
reposiTUm ]
[8] Abstract Solvers for Dung's Argumentation Frameworks
Rémi Brochenin, Thomas Linsbichler, Marco Maratea, Johannes P. Wallner, and Stefan Woltran.
Argument and Computation, Vol. 9(1), pp. 41-72. 2018
DOI | .pdf ]

2017

[7] Foundations of Implementations for Formal Argumentation
Federico Cerutti, Sarah A. Gaggl, Matthias Thimm and Johannes P. Wallner.
IfCoLog Journal of Logics and their Applications, Vol. 4(8), pp. 2623-2705, 2017
link | reposiTUm | .pdf ]
[6] Abstract Dialectical Frameworks. An Overview
Gerhard Brewka, Stefan Ellmauthaler, Hannes Strass, Johannes P. Wallner, and Stefan Woltran.
IfCoLog Journal of Logics and their Applications, Vol. 4(8), pp. 2263-2317, 2017
link | reposiTUm | .pdf ]
[5] CEGARTIX v2017-3-13: A SAT-Based Counter-Example Guided Argumentation Reasoning Tool
Wolfgang Dvořák, Matti Järvisalo, and Johannes P. Wallner.
ICCMA 2017 solver submission
webpage | system description ]
[4] Assumption-Based Argumentation Translated to Argumentation Frameworks
Tuomo Lehtonen, Johannes P. Wallner, and Matti Järvisalo.
ICCMA 2017 benchmark submission
download | description ]
[3] Deviation in Belief Change on Fragments of Propositional Logic
Adrian Haret and Stefan Woltran.
Proceedings of the 6th Workshop on Dynamics of Knowledge and Belief (DKB-2017) and the 5th Workshop KI and Kognition (KIK-2017) co-located with 40th German Conference on Artificial Intelligence (KI 2017), pages 64-76, Dortmund, Germany, September 26, 2017.
.pdf at ceur | .pdf ]
[2] Complexity Results and Algorithms for Extension Enforcement in Abstract Argumentation
Johannes P. Wallner, Andreas Niskanen, and Matti Järvisalo.
Journal of Artificial Intelligence Research, Vol. 60, pp. 1-40. 2017
DOI | reposiTUm | .pdf ]
[1] From Structured to Abstract Argumentation: Assumption-Based Acceptance via AF Reasoning
Tuomo Lehtonen, Johannes P. Wallner, and Matti Järvisalo.
In Alessandro Antonucci, Laurence Cholvy, and Odile Papini, editors, Proceedings of the 14th European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty, ECSQARU 2017, pages 57-68, Lugano, Switzerland, July 2017
DOI | reposiTUm | .pdf ]

Previous works by the project team

Pakota: A System for Enforcement in Abstract Argumentation
Andreas Niskanen, Johannes P. Wallner, and Matti Järvisalo.
In Loizos Michael and Antonis C. Kakas, editors, Proceedings of the 15th European Conference on Logics in Artificial Intelligence, JELIA 2016, pages 385-400, Larnaca, Cyprus, November 2016
DOI ]
Synthesizing Argumentation Frameworks from Examples
Andreas Niskanen, Johannes P. Wallner, and Matti Järvisalo.
In Gal A. Kaminka, Maria Fox, Paolo Bouquet, Eyke Hüllermeier, Virginia Dignum, Frank Dignum, and Frank van Harmelen, editors, Proceedings of the Twenty-Second European Conference on Artificial Intelligence, ECAI 2016, pages 551-559, The Hague, The Netherlands, August 2016
DOI ]
Optimal Status Enforcement in Abstract Argumentation
Andreas Niskanen, Johannes P. Wallner, and Matti Järvisalo.
In Subbarao Kambhampati, editor, Proceedings of the Twenty-Fifth International Joint Conference on Artificial Intelligence, IJCAI 2016, pages 1216-1222, New York, USA, July 2016
paper ]
Merging of Abstract Argumentation Frameworks.
Jérôme Delobelle, Adrian Haret, Sébastien Konieczny, Jean-Guy Mailly, Julien Rossit, and Stefan Woltran.
In Principles of Knowledge Representation and Reasoning: Proceedings of the Fifteenth International Conference, KR 2016, pages 33-42, Cape Town, South Africa, April 2016
paper ]
Complexity Results and Algorithms for Extension Enforcement in Abstract Argumentation
Johannes P. Wallner, Andreas Niskanen, and Matti Järvisalo.
In Dale Schuurmans and Michael P. Wellman, editors, Proceedings of the Thirtieth AAAI Conference on Artificial Intelligence, AAAI 2016, pages 1088-1094, Phoenix, Arizona, USA, February 2016
paper ]
An Extension-Based Approach to Belief Revision in Abstract Argumentation.
Martin Diller, Adrian Haret, Thomas Linsbichler, Stefan Rümmele, and Stefan Woltran.
In Qiang Yang and Michael Wooldridge, editors, Proceedings of the Twenty-Fourth International Joint Conference on Artificial Intelligence, IJCAI 2015, pages 2926-2932, Buenos Aires, Argentina, July 2015.
paper ]
Merging in the Horn Fragment.
Adrian Haret, Stefan Rümmele, and Stefan Woltran.
In Qiang Yang and Michael Wooldridge, editors, Proceedings of the Twenty-Fourth International Joint Conference on Artificial Intelligence, IJCAI 2015, pages 3041-3047, Buenos Aires, Argentina, July 2015.
paper ]
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