TY - JOUR
T1 - Layered RDF
T2 - An object-oriented approach to web information representation
AU - Vølstad, Torunn
AU - Liu, Fei
AU - Guan, Sheng Uei
PY - 2009
Y1 - 2009
N2 - Based on XML, RDF(S) has been recommended as the basic layer of the Semantic Web, providing a foundation for the higher layers of ontology, logic and trust. Although RDF(S) enables specification and identification of data and relationships between data, it has some limitations as a foundational language of the Semantic Web. Firstly, the unconstrained framework of the RDF Schema makes it hard to share information from different sources. Furthermore, RDF(S) has limited expres-siveness as a vocabulary description language, which is partly due to insufficient object-oriented features. Finally, the unclear semantics of RDF(S), caused by language constructs with dual roles, impede any approach to provide reasoning support for the language. To overcome some of the limitations, this paper presents Layered RDF, a web information representation language based on RDF(S). Layered RDF distinguishes schema information from instance information by having separated layers. Furthermore, Layered RDF provides more powerful schema mechanisms than does RDF Schema, by incorporating object-oriented features such as inheritance and polymorphism.
AB - Based on XML, RDF(S) has been recommended as the basic layer of the Semantic Web, providing a foundation for the higher layers of ontology, logic and trust. Although RDF(S) enables specification and identification of data and relationships between data, it has some limitations as a foundational language of the Semantic Web. Firstly, the unconstrained framework of the RDF Schema makes it hard to share information from different sources. Furthermore, RDF(S) has limited expres-siveness as a vocabulary description language, which is partly due to insufficient object-oriented features. Finally, the unclear semantics of RDF(S), caused by language constructs with dual roles, impede any approach to provide reasoning support for the language. To overcome some of the limitations, this paper presents Layered RDF, a web information representation language based on RDF(S). Layered RDF distinguishes schema information from instance information by having separated layers. Furthermore, Layered RDF provides more powerful schema mechanisms than does RDF Schema, by incorporating object-oriented features such as inheritance and polymorphism.
KW - Object-oriented features
KW - RDF(S)
KW - Semantic Web
UR - http://www.scopus.com/inward/record.url?scp=70349161135&partnerID=8YFLogxK
U2 - 10.3233/WIA-2009-0169
DO - 10.3233/WIA-2009-0169
M3 - Article
AN - SCOPUS:70349161135
SN - 1570-1263
VL - 7
SP - 281
EP - 301
JO - Web Intelligence and Agent Systems
JF - Web Intelligence and Agent Systems
IS - 3
ER -