ITGumbo: spicing IT up

We identified three types of metadata that can be used to describe a web resource. RDFa can be used to embed this metadata in the web content. The POWDER Description Resources can be used to separate the normative metadata that describes the web resource characteristics from the web content. The characteristic properties identified with normative metadata can be included as DR descriptors. POWDER specifications suggest that descriptors " DO NOT describe the DR, rather, they describe the resources in the Resource Set that is the scope of the DR".

All web pages on xyz.com may link to the DR that includes the given descriptor, whereas if this characteristic dcmitype:Service is embedded with RDFa then all web pages shall include RDFa statement. However the link to POWDER DR does not preclude the use of RDFa.

The metadata terms defined in POWDER can be used to:

• to authenticate normative metadata used (e.g. DR validity and trust properties)
• structure the semantic annotation of the web resource (e.g. web resource classification and resource grouping)
• avoid repetition of same normative metadata in multiple web resource content (e.g. include link to relevant Description Resource)
• enable fast parsing of web content for SPARQL query solutions required for "open market" and other semantic web applications (e.g. Resource Set definitions)