Temporal Extensions to RDF
Hsien-Tseng Wang, Abdullah Uz Tansel, Abdullah Uz Tansel, Abdullah Uz Tansel · Journal of Web Engineering · 2019
The Semantic Web aims at building a foundation of semantic-based data models and languages for not only manipulating data and knowledge, but also in decision making by machines.Naturally, time-varying data and knowledge are required in Semantic Web applications to incorporate time and further reason about it.However, the original specifications of RDF and OWL do not include constructs for handling time-varying data and knowledge.For simplicity, RDF model is confined to binary predicates, hence some form of reification is needed to represent higher-arity predicates.To this date, there are many proposals extending RDF and OWL for handling temporal data and knowledge.They all focus on the valid time.In this paper, we examine each of these proposals and develop a taxonomy to classify them according to the form of reification employed: explicit reification or implicit reification.The implicit reification proposals are further divided into three sub-categories according to semantic constructs