Making Explicit Semantic Relations Between Ontologies in Large Ontology Repositories

Carlo Allocca, Mathieu d'Aquin, Enrico Motta


Semantic Web...

can be seen as a large scale, distributed knowledge base, containing many ontologies that are made available online. These ontologies can be found through dedicated search engines, but they are given as a simple list leaving implicit possibly useful relationships between them such as inclusion, incompatibility, similarity or versions.


Detecting Relations

Automatically identifies implicit relations between ontologies.

Different semantic relations require different, specific mechanisms for their detection. The detection component of KANNEL is flexible and extensible, to easily integrate new procedures for detecting new relationships.

Reasoning Components

Provides reasoning based services to support users in exploring and exploiting ontology relations on the Semantic Web.

It allows the system to be queried for relations that are either automatically detected by the Detection Component, or that have been inferred through both ontological and rule-based reasoning over the DOOR ontology.
Input DOOR-Ontology


Is a semantic structure providing an explicit representation of implicit relations between ontologies.

It formalizes the hierarchical structure and the properties that characterize ontology relations. DOOR is the core of KANNEL as it connects together the different components and makes querying and reasoning with ontology relations possible.

Populating Component

Implements the task of relation instantiation.

It populates the DOOR ontology with instances of the relations that have been automatically detected.

Website | The Open University
website | NeOn Project
website | Knowledge Media Institute