... Harper San Francisco, 1999. An enhanced version of this article is on the Scientific American
Web site, with additional material and links. ... W3C Semantic Web Activity: www.w3.org/2001/sw/
An introduction to ontologies: www.SemanticWeb.org/knowmarkup.html ...
The Dublin Core 1:1 Principle asserts that "related but conceptually different entities, for example a painting and a digital image of the painting, are described by separate metadata records" (Woodley et al., 2005). While this seems to be a simple requirement, studies of metadata quality have found that cultural heritage metadata frequently does not conform to the Principle. Instead, representations commonly appear to make statements about multiple related resources, such as a painting and a digital surrogate that depicts the painting.
The term Linked Data refers to a set of best practices for publishing and connecting structured data on the Web. These best practices have been adopted by an increasing number of data providers over the last three years, leading to the creation of a global data space containing billions of assertions - the Web of Data.