The problem space…
from perspective of ‘data consumer’
- need to interact with multiple collections of stuff - bibliographic, full-text, data, image, video, etc.
- delivered thru multiple Web sites
- few cross-collection discovery services (with exception of big search engines like Google, but lots of stuff is not available to Google, i.e. it is part of the ‘invisible Web’)
from perspective of ‘data provider’
- few agreed mechanisms for disclosing availability of content