Research Problems in Ontology Modelling and Reasoning

Monsoon 2018
Instructor: Raghava Mutharaju
IIIT Delhi

Research Problems

  • Automatically building ontologies with complex relations
    • Given a dataset (text, tables, excel sheets), competency questions, and list of ODPs, can we (auto/semi-automatically) build ontologies that can answer the competency questions?
  • Automatic refactoring of ontologies with ODPs
    • Rebuild large (bulky) ontologies with ODPs
    • Can we make the bulky ontologies more modular by replacing pieces of the ontology with ODPs?
    • The "intent" or the behaviour of the modular ontology should be the same as the original ontology
    • The modular ontology should answer the same competency questions as the original one
  • Extracting ODPs from large ontologies
    • There are several large ontologies that may have similar patterns and can be extracted to form an ODP
    • Ontologies have to be analyzed and common structures have to be identified
  • Evaluation of Property Graphs and RDF Graphs
    • Property graph: key value pairs (attributes/properties) can be associated with nodes and edges
    • RDF graph: It is a directed labelled graph
    • Can property and RDF graphs be converted to one another seamlessly?
    • What are use-cases were property (RDF) graphs are good fit when compared to RDF (property) graphs?
    • Are existing triple stores efficient in handling property graphs?
    • How can we reason (for a specific profile such as RDFS) over property graphs without converting them to RDF graphs?


  1. Collected Research Questions Concerning Ontology Design Patterns. Karl Hammar et. al. Ontology Engineering with Ontology Design Patterns. 2016