Panos Alexopoulos

Biography

Data and Semantic Technologies Professional working at the intersection of data, semantics, and software.

Author of the book “Semantic Modeling for Data – Avoiding Pitfalls and Breaking Dilemmas”, published in September 2020 by O’Reilly.

Currently Head of Ontology at Textkernel, leading a team of data professionals in developing and delivering a large cross-lingual Knowledge Graph in the HR and Recruitment domain.

Regular speaker and trainer in academic and industry venues, striving to bridge the gap between academia and industry.

Talks and Events

2022 Tutorial: Hands-on Automatic Quality Assessment of Knowledge Graphs

In this tutorial we will tackle the challenge of detecting and uncovering (potentially systematic) quality issues  in knowledge graphs, in an as much as possible automatic way. We will cover quality dimensions like accuracy, completeness, conciseness and understandability, and we will apply problem detection methods inspired from linguistics, statistical modeling, and ontological analysis, in publicly available knowledge graphs. 

By the end of this tutorial, the attendees will be able to:

• Identify key quality dimensions that are important to measure in a knowledge graph, along with the typical reasons why a knowledge graph might have low scores in each of them.
• Develop computational methods for automatically detecting and uncovering quality issues in each of these dimensions.