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CODA SIGNED

Custom-Made Ontology Based Data Access

Total Cost €

0

EC-Contrib. €

0

Partnership

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Project "CODA" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITAET BREMEN 

Organization address
address: Bibliothekstrasse 1
city: BREMEN
postcode: 28359
website: www.uni-bremen.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˙922˙114 €
 EC max contribution 1˙922˙114 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2014-CoG
 Funding Scheme ERC-COG
 Starting year 2015
 Duration (year-month-day) from 2015-08-01   to  2020-07-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITAET BREMEN DE (BREMEN) coordinator 1˙922˙114.00

Map

 Project objective

The emerging and vibrant area of ontology-based data access (OBDA) is currently establishing itself as an important paradigm for processing incomplete and heterogeneous data. The goal of the CODA project is to make OBDA radically more useful for real-world applications by taking a ground-breaking new perspective on its foundations, algorithms, and tools. The project will rest on an ultimately fine-grained complexity analysis that allows to identify islands of tractability inside practically important ontology and query languages that are otherwise intractable. Based on these islands, novel OBDA querying tools will be developed that are custom-made for ontologies from applications in the sense that high computational cost is incurred only when unavoidable for the concrete ontology used (`pay as you go' behaviour). The key deliverables of the project are a set of tailor-made OBDA querying tools that form a precision tool belt for real-world OBDA applications, theoretical results regarding the structure and computational complexity of important islands of tractability, efficient algorithms that allow to put these to work in practice, and optimization techniques and heuristics that support the algorithms in the tools developed. We will also collect and make available a library of case studies for evaluating OBDA tools. The project is both timely and essential. It is timely because our economy and society are currently experiencing a revolution in data processing and availability, and dealing with incompleteness and heterogeneity is one of the major arising challenges. The project is essential because it has become apparent now that current OBDA tools cannot satisfy industry requirements. In particular, they do not adequately support the limited use of expressive features (`a little bit of disjunction') which intuitively should not result in high computational cost, but with current technology often does.

 Publications

year authors and title journal last update
List of publications.
2019 Carsten Lutz, Inanc Seylan, Frank Wolter
The Data Complexity of Ontology-Mediated Queries with Closed Predicates
published pages: , ISSN: 1860-5974, DOI: 10.23638/lmcs-15(3:23)2019
Logical Methods in Computer Science 15(3) 2020-03-24
2020 Pablo Barceló, Victor Dalmau, Cristina Feier, Carsten Lutz, Andreas Pieris
The Limits of Efficiency for Open- and Closed-World Query Evaluation Under Guarded TGDs
published pages: , ISSN: , DOI:
Proc. of the 39th Symposium on Principles of Database Systems (PODS) 2020 2020-03-24
2020 Jean Christoph Jung, Carsten Lutz, Mauricio Martel, Thomas Schneider
Conservative Extensions in Horn Description Logics with Inverse Roles
published pages: , ISSN: 1076-9757, DOI:
Journal of Artificial Intelligence Research (JAIR) 2020-03-24
2019 Jean Christoph Jung, Carsten Lutz, Thomas Zeume
Decidability and Complexity of ALCOIF with Transitive Closure (and More)
published pages: , ISSN: , DOI:
Proc. of the International Workshop on Description Logics (DL) 2019 2373 2020-03-24
2019 Cristina Feier, Antti Kuusisto, Carsten Lutz
Rewritability in Monadic Disjunctive Datalog, MMSNP, and Expressive Description Logics
published pages: , ISSN: 1860-5974, DOI: 10.23638/lmcs-15(2:15)2019
Logical Methods in Computer Science 15(2) 2020-03-24
2018 Cristina Feier, Carsten Lutz, Frank Wolter
From Conjunctive Queries to SPARQL Queries in Ontology-Mediated Querying
published pages: , ISSN: , DOI:
Proc of the International Workshop on Description Logics (DL) 2018 2211 2020-03-24
2019 Pablo Barceló, Cristina Feier, Carsten Lutz, Andreas Pieris
PTime Combined Complexity and FPT in Ontology-Mediated Querying
published pages: , ISSN: , DOI:
Proc. of the International Workshop on Description Logics (DL) 2019 2373 2020-03-24
2019 Tomasz Gogacz, Víctor Gutiérrez-Basulto, Yazmin Ibáñez-García, Jean Christoph Jung, Filip Murlak
On Finite and Unrestricted Query Entailment beyond SQ with Number Restrictions on Transitive Roles
published pages: , ISSN: , DOI:
Proc. of the International Workshop on Description Logics (DL) 2019 2373 2020-03-24
2017 Antti Kuusisto, Fabian Reiter
Emptiness Problems for Distributed Automata
published pages: 210-222, ISSN: , DOI:
Proc of International Symposium on Games, Automata, Logics and Formal Verification (GandALF) 2017 2019-05-31
2016 Meghyn Bienvenu, Peter Hansen, Carsten Lutz, Frank Wolter
First Order-Rewritability and Containment of Conjunctive Queries in Horn Description Logics
published pages: , ISSN: , DOI:
Proc of the International Workshop on Description Logics (DL) 2016 1577 2019-05-31
2018 Víctor Gutiérrez-Basulto, Yazmín Ibáñez-García, and Jean Christoph Jung
Answering Regular Path Queries over SQ ontologies
published pages: , ISSN: , DOI:
Proc. of the AAAI Conference on Artificial Intelligence (AAAI) 2018 2019-05-31
2017 Carsten Lutz, Frank Wolter
The Data Complexity of Description Logic Ontologies
published pages: , ISSN: 1860-5974, DOI: 10.23638/LMCS-13(4:7)2017
Logical Methods in Computer Science 13(4) 2019-05-31
2017 Peter Hansen, Carsten Lutz
Computing FO-Rewritings in EL in Practice: from Atomic to Conjunctive Queries
published pages: , ISSN: , DOI:
Proc of the International Workshop on Description Logics (DL) 2017 2019-05-31
2016 Juha Kontinen, Antti Kuusisto, Jonni VIrtema
Decidability of Predicate Logics with Team Semantics
published pages: , ISSN: , DOI:
41st International Symposium on Mathematical Foundations of Computer Science, 2016. 2019-05-31
2017 Cristina Feier, Antti Kuusisto, Carsten Lutz
Rewritability in Monadic Disjunctive Datalog, MMSNP, and Expressive Description Logics
published pages: , ISSN: , DOI:
Proc of the International Conference on Database Theory (ICDT) 2017 2019-05-31
2016 Antti Kuusisto
On the uniform one-dimensional fragment
published pages: , ISSN: , DOI:
Proceedings of the 29th International Workshop on Description Logics, Cape Town, South Africa, 2016. 2019-05-31
2016 Cristina Feier, Antti Kuusisto, Carsten Lutz
FO-Rewritability of Expressive Ontology-Mediated Queries
published pages: , ISSN: , DOI:
Proc of the International Workshop on Description Logics (DL) 2016 1577 2019-05-31
2018 Elena Botoeva, Carsten Lutz, Vladislav Ryzhikov, Frank Wolter, and Michael Zakharyaschev
Query Inseparability for ALC Ontologies
published pages: , ISSN: 0004-3702, DOI:
Artificial Intelligence 2019-05-31
2018 Pablo Barceló, Gerald Berger, Carsten Lutz, Andreas Pieris
First-Order Rewritability of Frontier-Guarded Ontology-Mediated Queries
published pages: , ISSN: , DOI:
Proc of 12th Alberto Mendelzon International Workshop on Foundations of Data Management 2019-05-31
2017 Carsten Lutz, Leif Sabellek
Ontology-Mediated Querying with EL: Trichotomy and Linear Datalog Rewritability
published pages: , ISSN: , DOI:
Proc of the International Workshop on Description Logics (DL) 2018 2019-05-31

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