also note JAH's own, a reference textbook in some graduate courses: Semantic Web for the Working Ontologist: Effective Modeling in RDFS and OWL: http://www.amazon.com/Semanti...
- Jonas Almeida
Linked Data: Heavy data, light semantics. What the web (2.0) seems to prefer. Web3.0 tries to make use of it and (perhaps apply more semantics).