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DeciGUT SIGNED

A Grand Unified Theory of Decidability in Logic-Based Knowledge Representation

Total Cost €

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EC-Contrib. €

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Partnership

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Project "DeciGUT" data sheet

The following table provides information about the project.

Coordinator
TECHNISCHE UNIVERSITAET DRESDEN 

Organization address
address: HELMHOLTZSTRASSE 10
city: DRESDEN
postcode: 1069
website: http://www.tu-dresden.de/

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Total cost 1˙814˙937 €
 EC max contribution 1˙814˙937 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-COG
 Funding Scheme ERC-COG
 Starting year 2018
 Duration (year-month-day) from 2018-10-01   to  2023-09-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    TECHNISCHE UNIVERSITAET DRESDEN DE (DRESDEN) coordinator 1˙814˙937.00

Map

 Project objective

'Logic-based knowledge representation (KR) constitutes a vital area of IT. The field inspires and guides scientific and technological developments enabling intelligent management of large and complex knowledge resources. Elaborate languages for specifying knowledge (so-called ontology languages) and querying it have been defined and standardized. Algorithms for automated reasoning and intelligent querying over knowledge resources are being developed, implemented and practically deployed on a wide scale. Thereby, decidability investigations play a pivotal role to characterize what reasoning or querying tasks are at all computationally solvable. Past decades have seen a proliferation of new decidable formalisms for KR, dominated by two major paradigms: description logics and rule-based approaches, most notably existential rules. Recently, these research lines have started to converge and first progress has been made toward identifying commonalities among the various formalisms. Still, the underlying principles for establishing their decidability remain disparate, ranging from proof-theoretic notions to model-theoretic ones. DeciGUT will accomplish a major breakthrough in the field by establishing a 'Grand Unified Theory' of decidability. We will provide a novel, powerful model-theoretic criterion inspired by advanced graph-theoretic notions. We will prove that the criterion indeed ensures decidability and that it subsumes most of (if not all) currently known decidable formalisms in the KR field. We will exploit our results toward the definition of novel decidable KR languages of unprecedented expressivity. We will ultimately extend our framework to encompass more advanced KR features beyond standard first order logic such as counting and non-monotonic aspects. Our research will draw from and significantly impact the scientific fields of AI, Database Theory and Logic, but also give rise to drastically improved practical information management technology.'

 Publications

year authors and title journal last update
List of publications.
2018 Sebastian Rudolph, Mantas Simkus
The Triguarded Fragment of First-Order Logic
published pages: 604-587, ISSN: 2398-7340, DOI: 10.29007/m8ts
EPiC Series in Computing volume 57 vol 57 2020-04-24

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