I am a research assistant at the Department of Computer Science, University of Oxford. I am a member of the Knowledge Representation Group and I am working on query optimisation in RDF databases. I completed my PhD studies in August 2015 under the supervision of Prof. Boris Motik and Prof. Ian Horrocks. During my PhD I studied the theoretical and practical aspects of combining knowledge representation formalisms and databases; in particular, I worked on the problem of answering expressive queries over knowledge bases expressed in (fragments of) the EL profile of OWL 2.
- Best Thesis Award. European Master in Computational Logic. 2010/2011.
- EMCL Scholarship for EU students (2009): The scholarship includes tuition fee waivers and financial support
- Bozen-Bolzano Excellent Student’s Scholarship (2007-2009-2010): A one-off stipend given
by the province of Bozen-Bolzano to outstanding students
Estimating the Cardinality of Conjunctive Queries over RDF Data Using Graph Summarisation
Giorgio Stefanoni‚ Boris Motik and Egor V. Kostylev
In Proceedings of the 2018 World Wide Web Conference on World Wide Web‚ WWW 2018‚ Lyon‚ France‚ April 23−27‚ 2018. Pages 1043–1052. 2018.
The Combined Approach to Query Answering Beyond the OWL 2 Profiles
Cristina Feier‚ David Carral‚ Giorgio Stefanoni‚ Bernardo Cuenca Grau and Ian Horrocks
Answering conjunctive queries over EL knowledge bases with transitive and reflexive roles
Giorgio Stefanoni and Boris Motik
In Proceeding of the Twenty−Ninth AAAI Conference in Artificial Intelligence. 2015.