Data and Knowledge Group
― Knowledge Representation and Reasoning
KRR People
Charalampos (Babis) Nikolaou
Research Assistant
Biography
I am a research assistant (postdoctoral researcher) at the Department of Computer Science of the University of Oxford and a member of the Knowledge Representation and Reasoning Group. I am primarily working with Professor Ian Horrocks and Professor Bernardo Cuenca Grau. I hold a PhD from the Department of Informatics and Telecommunications (DI&T) of the University of Athens where I worked on the topic of querying incomplete (geospatial) information in the data model RDF. My PhD advisor was Manolis Koubarakis. I hold an MSc and a Ptychion (4-year BSc) from DI&T and have been affiliated with the Management of Data, Information & Knowledge Group (MaDgIK) of DI&T since its founding in 2009. My research interests revolve around the areas of semantic web, artificial intelligence, and databases.
Recent Publications
Check my publications on the DBLP server.
Name
Charalampos (Babis) Nikolaou
Posts
Research Assistant
Projects
Contact Information
Wolfson Building, Parks Road, Oxford OX1 3QD
Tools
News
New Positions!
The KRR group has new postdoctoral positions available! Research topic includes Ontology, Knowledge Graph, Semantic Web, Logics, as well as the interdisciplinary between them and machine learning. Send your CV to Ian or Bernardo. [added on 26/11/2019]
In-Use Track Best Student Paper in ISWC'19>
The paper "Knowledge Graph Embedding for Ecotoxicological Effect Prediction" gets In-Use Track Best Student Paper in ISWC'19. The work was done when the first student author Erik B. Myklebust was visiting the KRR group, with Jiaoyan Chen.
3 Paper accepted in AAAI'18
Three papers co-authored by the KRR group have been accepted in
AAAI'18:
- "Stream Reasoning in Temporal Datalog"
by A. Ronca, M. Kaminski, B. Cuenca Grau, B. Motik, and I. Horrocks;
- "Optimised Maintenance of Datalog Materialisations"
by P. Hu, B. Motik, and I. Horrocks; and
- "Goal-Driven Query Answering for Existential Rules with Equality"
by M. Benedikt, B. Motik, and E. Tsamoura.
Professor Ian Horrocks is a new honorary doctorate at University of Oslo, Faculty of Mathematics and Natural Sciences
Professor Ian Horrocks received an honorary doctorate from the University of Oslo.
Best paper award at IJCAI'17
The paper entitled "Foundations of Declarative Data Analysis Using Limit Datalog Programs" and authored by M. Kaminski, B. Cuenca Grau, B. Motik, E. V. Kostylev, and I. Horrocks received the best paper award at the 26th International Joint Conference on Artificial Intelligence (IJCAI'17).
3 papers accepted in IJCAI'17
Three papers co-authored by the KRR group have been accepted in
IJCAI'17:
- "Query Reformulation: Theory and Practice"
by M. Benedikt, E. V. Kostylev, F. Mogavero, and E. Tsamoura;
- "Foundations of Declarative Data Analysis Using Limit Datalog Programs"
by
M. Kaminski, B. Cuenca Grau, B. Motik, E. V. Kostylev, and I. Horrocks; and
- "The Bag Semantics of Ontology-Based Data Access"
by C. Nikolaou, E. V. Kostylev, G. Konstantinidis, M. Kaminski, B. Cuenca Grau, and I. Horrocks.
Paper accepted in PODS'17
The paper entitled "Benchmarking the chase" authored by Michael Benedikt, George Konstantinidis, Giansalvatore Mecca, Boris Motik, Paolo Papotti, Donatello Santoro, and Efthymia Tsamoura has been accepted in PODS'17.
Andrew Bate defends his PhD Thesis
Andrew Bate has successfully defended his PhD Thesis on Consequence Based Reasoning. Congratulations to Dr. Andrew Bate!
Best applications paper award at ISWC'16
Our paper entitled "Semantic Technologies for Data Analysis in Health Care" received the Best Applications Paper Award at the International Semantic Web Conference (ISWC 2016).
4 papers accepted in ISWC'16
Four papers authored by the KRR group have been accepted in the International Semantic Web Conference (ISWC 2016).
Best paper award at ICDT'16
Mark Kaminski and Egor Kostylev received the best paper award at ICDT 2016 for their paper entitled "Beyond Well-Designed SPARQL".