Published Nov. 22, 2022, 9:59 a.m.
Seminario prof. Andreas Pieris 22/11/2022
Principles of Ontological Databases
- Titolo: Principles of Ontological Databases
- Relatore: prof. Andreas Pieris
- Data: 22/11/2022, ore 10:30, aula MT11 Cubo 30B 2° Piano
Nowadays we need to deal with data that is very large, heterogeneous, distributed in different sources, and incomplete. At the same time, we have very large amounts of knowledge about the application domain of the data in the form of ontologies that can be used to provide end users with flexible and integrated access to data. This gave rise to ontological databases, which lie at the intersection of traditional databases, and knowledge representation and reasoning. The purpose of the seminar is to introduce students to the principles of ontological databases. To this end, the seminar will consist of two parts: Part 1 will cover the basic principles of relational databases, without taking ontologies into account; Part 2 will introduce ontologies and discuss the principles of ontological databases by building on top of the principles of relational databases discussed in Part 1. Upon completion of this seminar, the students will be able to: abstract relational data and relational queries from their physical implementation and formalize them in a rigorous way; analyze the complexity of querying relational data and isolate the source of complexity; abstract rule-based ontologies from their physical implementation and formalize them in a rigorous way; explain and use the main (forward- and backward-chaining) techniques underlying ontological query answering; analyze the complexity of ontological query answering, and isolate the source of complexity.