Evènement pour le groupe Séminaire Méthodes Formelles


Date 2020-06-02  14:00-15:00
TitreLearning Description Logic Ontologies 
RésuméOntologies have been used to describe knowledge in various domains, in particular, in those related to life sciences. Semi-automating the process of building an ontology has attracted researchers from various communities into a field called "Ontology Learning". The process of building an ontology can be divided into two main tasks: finding the relevant vocabulary and the appropriate ontology language, and discovering how the vocabulary should be related using the logical constructs available in the chosen ontology language. In this presentation, I will provide a brief overview of five approaches from the literature which have been proposed to semi-automate the process of building an ontology formulated in description logic (DL), focusing on the second task. I will then present some results on the complexity of learning lightweight DL ontologies in the exact and probably approximately correct learning models from computational learning theory. Main references for this talk: Learning Query Inseparable ELH Ontologies AAAI 2020 Learning Description Logic Ontologies. Five Approaches. Where Do They Stand? KI 2020 (under review, minor revision) Exact Learning of Lightweight Description Logic Ontologies JMLR 2018 ExactLearner: A Tool for Exact Learning of EL Ontologies KR 2018 A Model for Learning Description Logic Ontologies Based on Exact Learning AAAI 2016 
Lieu178 
OrateurAna Ozaki 
Emailhttps://sites.google.com/site/anaozaki/ 
UrlUniversity of Bergen 



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