Christof Spanring
| Address | Institute of Logic and Computation Research Division of Database and AI Vienna University of Technology Favoritenstraße 9-11 1040 Vienna, Austria |
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| Phone | +43-1-58801-740-066 |
| Room | HA 03 20 |
About me
After quite a few years of studying a supposedly wide range of subjects (Mathematics, Jazz Trumpet, Computer Science, Japanology, Philosophy and Life) in January 2013 I finally finished my Mag.rer.nat. in mathematics at University of Vienna, specialising in logic and writing my diploma thesis under external supervision of Stefan Woltran. The subject of Abstract Argumentation seems to have caught my continued interest though, which is why I was enrolled as a PhD student at Liverpool University, supervisors Paul E. Dunne and Davide Grossi, external supervisor Stefan Woltran, and advisors Sven Schewe and Wiebe van der Hoek. In 2017 my thesis "Set- and Graph-theoretic Investigations in Abstract Argumentations" was reviewed and accepted internally by Frank Wolter and externally by Pietro Baroni.
For the time being I am mostly located in Vienna and work as a project assistant at the DBAI group, Faculty of Informatics, Technical University of Techology; previously in the project Abstract Dialectical Frameworks: Advanced Tools for Formal Argumentation, now in GRAPPA: A Semantical Framework for Graph-Based Argument Processing (DFG/FWF I2843).
Professional Activities
Ambassador for Imperial College Computing Student Workshop 2014, 2015
Research Interests
As far as research is concerned I am mostly dedicated to working on Abstract Argumentation, as its fairly straightforward definitions still provide countless open and interesting questions. At the moment I am working on Intertranslatability and Realizability issues, as well as Properties of Infinite Argumentation Frameworks.
Argumentative Issues of Intertranslatability
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| © Marie-Theres Gallnbrunner |
Publications
See also: [ Google Scholar | DBLP | PubDB ]2017 | |
| [12] |
Set- and Graph-theoretic Investigations in Abstract Argumentation Christof Spanring PhD Thesis, University of Liverpool 2017 [ pdf ] |
| [11] |
A Study of Unrestricted Frameworks Ringo Baumann, Christof Spanring IJCAI 2017 [ doi ] |
2016 | |
| [10] |
On rejected arguments and implicit conflicts: The hidden power of argumentation semantics.
Ringo Baumann, Wolfgang Dvořák, Thomas Linsbichler, Christof Spanring, Hannes Strass, and Stefan Woltran. Artif. Intell., 241: 244-284, 2016. [ web ] |
| [9] |
Perfection in Abstract Argumentation
Christof Spanring COMMA 2016: 439-446 [ web | pdf ] |
| [8] |
Investigating the Relationship between Argumentation Semantics via Signatures Paul E. Dunne, Thomas Linsbichler, Christof Spanring, Stefan Woltran IJCAI 2016 [ web ] |
| [7] |
Comparing the Expressiveness of Argumentation Semantics Wolfgang Dvořák, Christof Spanring Journal of Logic and Computation (JLC) [ web | abstract | html | pdf ] |
2015 | |
| [6] |
Hunt for the Collapse of Semantics in Infinite Argumentation Frameworks Christof Spanring 2015 Imperial College Computing Student Workshop: 70-77 [ web | pdf ] |
| [5] |
The Hidden Power of Argumentation Semantics Thomas Linsbichler, Christof Spanring, Stefan Woltran In Elizabeth Black, Sanjay Modgil and Nir Oren, editors, Proceedings of the 3rd International Workshop on Theory and Applications of Formal Argumentation (TAFA 2015), 2015. [ web | pdf ] |
| [4] |
Comparing the Expressiveness of Argumentation Semantics Wolfgang Dvořák, Christof Spanring Technical Report DBAI-TR-2015-90, Technische Universität Wien [ web | pdf ] |
| [3] |
Infinite Argumentation Frameworks – On the Existence and Uniqueness of
Extensions Ringo Baumann, Christof Spanring In Advances in Knowledge Representation, Logic Programming, and Abstract Argumentation. (Festschrift in honor of Gerhard Brewka on the occasion of his 60th birthday) [ web | pdf ] |
2014 | |
| [2] |
Axiom of Choice, Maximal Independent Sets, Argumentation and Dialogue Games
Christof Spanring
2014 Imperial College Computing Student Workshop: 91-98 [ web | pdf ] |
2012 | |
| [1] |
Comparing the Expressiveness of Argumentation Semantics
Wolfgang Dvořák, Christof Spanring COMMA 2012: 261-272 [ web | pdf ] |
| [0] |
Intertranslatability Results for Abstract Argumentation Semantics
Christof Spanring Diplomarbeit, Mag.rer.nat., Mathematik, University of Vienna [ web | pdf ] |
Slides and the kind
2017 | |
| [15] |
From Intractability to Inconceivability New Trends in Formal Argumentation, Vienna August 17 [ pdf ] |
| [14] |
Trumpet Reincarnations: Abstract Argumentation Strenge Kammer: Lost & Found Porgy & Bess, Vienna April 24 [ pdf ] |
2016 | |
| [13] |
Conflicts in Abstract Argumentation DBAI research seminar November 10 [ slides (pdf) | abstract ]
One of the most substantial definitions in abstract argumentation is
conflict-freeness, which refers to sets of arguments where no member is
attacking another. The implicit intuition for conflict thereof is
that attacking arguments should not be synchronously acceptable. This
intuition turned upside down asks whether not synchronously acceptable
pairs of arguments necessarily are in an attack relationship. This work
is dedicated to a concise investigation of relations between syntactic
conflicts (given by structure) and semantic conflicts (derived from
incompatible acceptance states).
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| [12] |
Perfection in Abstract Argumentation COMMA Potsdam, Germany September 14 [ slides (pdf) ] |
| [11] |
Relations between Syntax and Semantics in Abtract Argumentation The Second Summer School on Argumentation: Computational and Linguistic Perspectives Potsdam, Germany September 9 [ poster (pdf) ] |
| [10] |
Conflicts in Abstract Argumentation Cardiff Argumentation Forum July 7 [ abstract (pdf) | slides (pdf) ] |
2015 | |
| [9] |
Existence Conditions of Extensions in Infinite Argumentation Frameworks DBAI research seminar November 26 [ slides (pdf) | abstract ]
As in practice neither available space nor available time are infinite,
in computer science we mostly restrict ourselves to the finite cases. Be
it instantiation-based databases, be it as of yet unknown reasons, be it
curiosity, sometimes letting go of this restriction nonetheless is of
interest. In abstract argumentation from the popular semantics only
stable might crash (not provide any extension) in the finite case, while
others provably don't. It is known that some semantics crash in some
infinite cases. In this work we discuss examples of crashing semantics
as well as conditions guaranteeing existence of extensions for naive,
preferred, stage and semi-stable semantics.
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| [8] |
Dialogue Games on Abstract Argumentation Graphs Pluridisciplinary Workshop on Game Theory CIMI Toulouse November 20 [ slides (pdf) ] |
| [7] |
Hunt for the Collapse of Semantics in Infinite Argumentation Frameworks ICCSW 2015 Imperial College London September 25 [ slides (pdf) ] |
| [6] |
Abstract Argumentation, Implicit Conflicts Postgraduate Workshop 2015 University of Liverpool May 7 [ slides (pdf) ] |
| [5] |
Abstract Argumentation, Implicit Conflicts Postgraduate Workshop 2015 University of Liverpool March 26 [ poster (pdf) ] |
2014 | |
| [4] |
Axiom of Choice, Maximal Independent Sets, Argumentation and Dialogue Games PhD students Tea Talk University of Liverpool October 3 [ slides (pdf) ] |
| [3] |
Axiom of Choice, Maximal Independent Sets, Argumentation and Dialogue Games ICCSW 2014 Imperial College London September 25 [ slides (pdf) ] |
2013 | |
| [2] |
Trumpet Reincarnations: proofs from the book Strenge Kammer: turn the corner! Porgy & Bess, Vienna May 8 [ part 1 (pdf) | part 2 (svg) ] |
2012 | |
| [1] |
Comparing the Expressiveness of Argumentation Semantics COMMA 2012 Technical University of Vienna September 11 [ slides (pdf) ] |
Awards
2015 | |
| [1] |
Best Reviewer Award ICCSW 2015 Imperial College London |
