| Abstract |
The world changes continuously and, consequently, concepts also change their meaning over time: we call this phenomenon "concept drift". Extensional concept drift is one type of change of meaning that affects the things the concept extends to. It occurs frequently in historical statistical datasets, and it can have drastic consequences in longitudinal querying. In this talk I will show our work in progress in detecting extensional concept drift in the Dutch historical censuses, reviewing how we published the entire dataset as RDF Data Cube and tracing the census concepts that likely changed the most in the end of the 19th century. |