The Data and Web Science Group

dwsCreated on Jan 14th, 2021

Welcome to the webpages of the Data and Web Science Group. We conduct research and offer teaching in the areas data analytics, artificial intelligence, natural language processing, and data integration. The group consists of 8 professors and around 35 researchers and supporting staff members. Homepage:


CaLiGraph is a large semantic knowledge graph with a rich ontology compiled from the DBpedia ontology and Wikipedia categories & list pages. The ontology is enriched with fine-grained value restrictions on its classes that are learned through the Cat2Ax approach. A large amount of CaLiGraph's resources are extracted from Wikipedia list pages through a combination of the ontological information with machine learning methods.

Version: 1.3.0