[July 04, 2000] Abstract: "PICS, the Platform for Internet Content Selection is a system for associating metadata (PICS 'labels') with Internet content. PICS provides a mechanism whereby independent groups can develop metadata vocabularies without naming conflict. The syntax of a PICS label is very compact and does not use any of the subsequent Web technology such as XML and XSL. RDF, the Resource Description Framework provides a model for representing metadata that is even more general than PICS, with more expressive power, and uses XML syntax. A goal of RDF was to permit the mechanical translation of PICS metadata into RDF form. This document represents one possible mapping of PICS into XML/RDF."
"The material in this document was first published as part of the RDF Schema specification, Proposed Recommendation of 1999-03-03. It has been published as an independent document to facilitate its evolution independently of the RDF Schema specification. At the time this document was created, no working group was chartered to advance the PICS RDF/XML mapping. Consequently this document in its current version has no formal standing in W3C process and is provided here for reference and discussion amongst PICS and RDF implementors."
"The PICS specification enables labels (metadata) to be associated with Internet content. It was originally designed to help parents and teachers control what children access on the Internet, but it also facilitates other uses for labels, including code signing and privacy. The PICS platform is one on which other rating services and filtering software have been built. . ."