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Dr. Martin Rezk

ε- Μail: martin (dot) rezk (at) rakuten (dot) com

I am currently a senior scientist at Rakuten Inc.. I am working mainly on market segmentation, semantic information extraction, and profiling for the finance sector. While working in the academia, my research interests were in the areas of (but not limited to) Ontology Based Data Access (OBDA) for data integration, query optimization, Knowledge Representation and Reasoning (KRR) and Natural Language Processing.


PhD in Computer Science - 2008-2012

Dissertation Title: Reasoning about Actions in Transaction Logic [pdf]

Publications (Journals)

Ontology-based data integration in EPNet: Production and distribution of food during the Roman Empire.

Engineering Applications of Artificial Intelligence, 2016.

Optique -- zooming in on big data access.

IEEE Computer, 2015.

Efficient SPARQL-to-SQL with R2RML mappings

Journal of Web Semantics, 2015.

Transaction Logic with Partially Defined Actions

Journal on Data Semantics, 2012.

Selected Publications (International Conferences)

Extracting Semantic Information for e-Commerce

International Semantic Web Conference, (ISWC), 2016.

Ontology-based Integration of Cross-linked Datasets

International Semantic Web Conference, (ISWC), 2015.

The NPD benchmark: Reality check for OBDA systems

Extending Database Technology (EDBT), 2015.

Answering SPARQL Queries over Databases and under OWL 2 QL Entailment Regime

International Semantic Web Conference (ISWC), 2014.

Rules and Ontology Based Data Access

Eighth International Conference on Web Reasoning and Rule Systems, (RR), 2014.

Formalizing Production Systems with Rule-based Ontologies

International Symposium on Foundations of Information and Knowledge Systems, 2012. [pdf]

See the complete list


Research Experience

Research Assistant Free University of Bozen-Bolzano, Italy - 2010/12

  • Project: OntoRule, ONTOlogies meet business RULEs

PostDoc Fellow KAIST, South Korea - 2012/2013

  • Project: LOD2, Creating Knowledge out of Interlinked Data

PostDoc Fellow Free University of Bozen-Bolzano, Italy - 2013/2015

  • Project: Optique, Scalable end-user access to Big Data


Kyokushin Karate (National Champion 2007), Brazilian Jiu Jitsu (3th Place in Submissions Only
Long Island Tournament, 2010), diving (SSI and PADI certified), photography, playing guitar, literature.


Available on request.