Webpages tagged with «Ontologies»

Small changes in wording can lead a large language model (LLM) to give different answers to the same question. In this project, you will build a tool to compare different phrasings and find out which ones give accurate, consistent answers.

Large language models can help check uncertain matches between knowledge bases, but each check takes time and computing resources. In this project, you will build a program that uses clues from ontologies to decide which matches should be checked first.

In this project, you will compare a recent ontology template language OTTR with well-established Semantic Web formalisms, namely query language SPARQL and constraint language SHACL.

The project has both a theoretical and a practical part; in the former, you will develop efficient algorithms for translation between the languages, while in the latter you will implement the algorithms and evaluate them on synthetic and real-life benchmarks. As a result, you will demonstrate that OTTR can be also used for querying ontologies and restricting their shape.

This project aims at developing models and tools for automated or semi-automated classification and discovery of cyberthreats based on ontologies and semantic reasoning.