Barry Smith explains scientific ontologies in the sense that a scientific ontology always refers to something existing in reality. In the talk, ontologies will be treated on `word-level`, i.e. neither technology nor implementation are subject of the talk, but only what comes before that in ontological design.
Resource Description Framework (RDF) is a standard for describing resources on the web. This guide contains links to many RDF resources including examples, documents, software, tools and projects that use it.
This document defines an abstract syntax on which RDF is based, and which serves to link its concrete syntax to its formal semantics. This abstract syntax is quite distinct from XML's tree-based infoset [XML-INFOSET]. It also includes discussion of design goals, key concepts, datatyping, character normalization and handling of URI references.
B. Omelayenko. Proceedings of the International Workshop on Web Dynamics, held in conj. with the 8th International Conference on Database Theory (ICDT’01), London, UK, (2001)