1. |
- Abd Nikooie Pour, Mina, et al.
(author)
-
Results of the Ontology Alignment Evaluation Initiative 2023
- 2023
-
In: Proceedings of the 18th International Workshop on Ontology Matching co-located with the 22nd International Semantic Web Conference (ISWC 2023), Athens, Greece, November 7, 2023.. - : CEUR Workshop Proceedings. ; , s. 97-139
-
Conference paper (peer-reviewed)
|
|
2. |
- Broekstra, Jeen, et al.
(author)
-
Enabling Knowledge Representation on the Web by Extending RDF Schema
- 2001
-
Reports (other academic/artistic)abstract
- Recently, there has been a wide interest in using ontologies on the Web. As a basis for this, RDF Schema (RDFS) provides means to dene vocabulary, structure and constraints for expressing metadata about Web resources. However, formal semantics are not provided, and the expressivity of it is not enough for full-fledged ontological modeling and reasoning.In this paper, we will show how RDFS can be extended in such a way that a full knowledge representation (KR) language can be expressed in it, thus enriching it with the required additional expressivity and the semantics of this language. We do this by describing the ontology language OIL as an extension of RDFS. An important advantage of our approach is a maximal backward compatability with RDFS: any meta-data in OIL format can still be partially interpreted by any RDFS-only-processor.The OIL extension of RDFS has been carefully engineered so that such a partial interpretation of OIL meta-data is still correct under the intended semantics of RDFS: simply ignoring the OIL specic portions of an OIL document yields a correct RDF(S) document whose intended RDFS semantics is precisely a subset of the semantics of the full OIL statements. In this way, our approach ensures maximal sharing of meta-data on the Web: even partial interpretation of meta-data by less semantically aware processors will yield a correct partial interpretation of the meta- data. We conclude that our method of extending is equally applicable to other KR formalisms.
|
|
3. |
- Klein, Michel, et al.
(author)
-
The Relation between Ontologies and XML Schemas
- 2001
-
Reports (other academic/artistic)abstract
- Support in the exchange of data, information, and knowledge is becoming a key issue in current computer technology. Ontologies may play a major role in supporting the information exchange processes, as they provide a shared and common understanding of a domain. However, it is still an important question how ontologies can be applied fruitfully to online resources. Therefore, we will investigate the relation between ontology representation languages and document structure techniques (schemas) on the web. We will do this by giving a detailed comparison of OIL, a proposal for expressing ontologies in the Web, with XML Schema, a proposed standard for describing the structure and semantics of XML based documents. We will argue that these two refer to different levels of abstraction, but that, in several cases, it can be advantageous to base a document schema on an ontology. Lastly, we will show how this can be done by providing an translation procedure from an OIL ontology to a specific XML Schema. This will result in a schema that can be used to capture instances of the ontology.
|
|