Data and SEMANTIC Technologies Professional

Ontologies & Knowledge Graphs, Semantic Data Management, Data Science and Analytics

About me

Since 2006, I have been working at the intersection of data, semantics, and software, contributing in building intelligent systems that deliver value to business and society. Born and raised in Athens, Greece, I currently work as Head of Ontology at Textkernel, in Amsterdam, Netherlands, where I lead a team of Data Professionals in developing and delivering a large cross-lingual Knowledge Graph in the HR and Recruitment domain. Academically, I hold a PhD in Knowledge Engineering and Management from National Technical University of Athens, and I have published several papers at international conferences, journals and books.  I am a regular speaker and trainer in both academic and industry venues, striving to bridge the gap between academia and industry.

Semantic Modeling Book

A practical and pragmatic field guide for data practitioners that want to learn how semantic data modeling is applied in the real world.

Shows you what pitfalls to avoid and what dilemmas to break if you want to build and exploit high-quality and valuable taxonomies, ontologies, knowledge graphs and other types of semantic data models.

Expected to be published in November 2020 by O’Reilly Media. Till then, you can read an Early Release version on O’Reilly’s Learning Platform.

Who should read this

You are a Data or Information Architect with a mission to make data more understandable and usable across applications and people.

You are a Taxonomist, Ontologist or Knowledge Engineer who works on infusing domain knowledge into the next Alexa or Siri.

You are a Data Scientist or Machine Learning Expert who finds it difficult to obtain the right data to analyze or train their systems with.

Find more

Download the table of contents for more details on the book’s structure and content.

Read the first two chapters of the book’s Early Release on O’Reilly’s Learning Platform and let me know your opinion and comments.

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Here you can find research papers I have published in academic conferences, as well as videos and slides from talks and tutorials  I have given to  academic and industrial events.

Research Publications


Talks and Tutorials


Contact me