Ontologies and data management: a brief survey

T Schneider, M Šimkus - KI-Künstliche Intelligenz, 2020 - Springer
Abstract Information systems have to deal with an increasing amount of data that is
heterogeneous, unstructured, or incomplete. In order to align and complete data, systems …

The Vadalog system: Datalog-based reasoning for knowledge graphs

L Bellomarini, G Gottlob, E Sallinger - arXiv preprint arXiv:1807.08709, 2018 - arxiv.org
Over the past years, there has been a resurgence of Datalog-based systems in the database
community as well as in industry. In this context, it has been recognized that to handle the …

Ontology-mediated query answering with data-tractable description logics

M Bienvenu, M Ortiz - Reasoning Web. Web Logic Rules: 11th …, 2015 - Springer
Recent years have seen an increasing interest in ontology-mediated query answering, in
which the semantic knowledge provided by an ontology is exploited when querying data …

Expressive languages for querying the semantic web

M Arenas, G Gottlob, A Pieris - Proceedings of the 33rd ACM SIGMOD …, 2014 - dl.acm.org
The problem of querying RDF data is a central issue for the development of the Semantic
Web. The query language SPARQL has become the standard language for querying RDF …

Knowledge-based anomaly detection: Survey, challenges, and future directions

AQ Khan, S El Jaouhari, N Tamani, L Mroueh - Engineering Applications of …, 2024 - Elsevier
Due to the rapidly increasing number of Internet-connected objects, a huge amount of data
is created, stored, and shared. Depending on the use case, this data is visualized, cleaned …

Chase termination for guarded existential rules

M Calautti, G Gottlob, A Pieris - Proceedings of the 34th ACM SIGMOD …, 2015 - dl.acm.org
The chase procedure is considered as one of the most fundamental algorithmic tools in
database theory. It has been successfully applied to different database problems such as …

Eliminating harmful joins in warded datalog+/−

T Baldazzi, L Bellomarini, E Sallinger… - Rules and Reasoning: 5th …, 2021 - Springer
We provide a rewriting technique of Warded Datalog+/− settings to sustain decidability and
data tractability of reasoning tasks in the presence of existential quantification and recursion …

[PDF][PDF] Chasing sets: How to use existential rules for expressive reasoning

D Carral, I Dragoste, M Krötzsch, C Lewe - Description Logics, 2019 - iccl.inf.tu-dresden.de
We propose that modern existential rule reasoners can enable fully declarative
implementations of rule-based inference methods in knowledge representation, in the sense …

Expressive languages for querying the semantic web

M Arenas, G Gottlob, A Pieris - ACM Transactions on Database Systems …, 2018 - dl.acm.org
The problem of querying RDF data is a central issue for the development of the Semantic
Web. The query language SPARQL has become the standard language for querying RDF …

Existential rule languages with finite chase: Complexity and expressiveness

H Zhang, Y Zhang, JH You - Proceedings of the AAAI Conference on …, 2015 - ojs.aaai.org
Finite chase, or alternatively chase termination, is an important condition to ensure the
decidability of existential rule languages. In the past few years, a number of rule languages …