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Concept - Offer Phase
  • The purpose of this page is to explain how the owner of a site can advise visitors that a particular element of dynamic information is knowledge data for which updates are available. This is a very simple function but is important as the point at which users first encounter the dynamic web.
  • When making an 'offer' the publisher must be aware that the data concerned will be regarded as "indivisible and semantically complete with immutable versions which have their own provenance".
  • When taking -up an 'offer' the subscriber must also be aware that the version of this data seen by visitors to the subscribing site will always be the one that was found to be the latest available on that site when the page was downloaded or last refreshed.

Subscription Contract Application Form

Information within a page for which an update service is available is highlighted together with a link to a subscription contract application page. This page is situated within the host site constitutes an offer and contains a subscription contract application form with standard content as follows:

    Publisher URI. This is a URI that identifies the person or organisation responsible for the service and is supplied by the creator of the offer.
    Publishing Site. This is always the URL of the cuurent web-site and is supplied by the creator of the offer.
    Subject Selection Criteria . This is a URI supplied by the publisher to identify a web resource specifying the range of subjects for which knowledge data may be distributed under the offer . To minimize the risk of error this form will also include the description and explanation associated with theURI.
    Predicate Selection Criteria . This is a URI supplied by the publisher to identify a web resource specifying the range of a properties, context and provenance that may qualify an assertion for distribution under the offer. To minimize the risk of error this form will also include the description and explanation associated with this URI. The default for such criteria is a service that will supply all versions that originate as the most recent sourced at the host site for the specified combination of subject and meaning (property).
    Operating Constraints . This is a URI supplied by the publisher to identify a web resource specifying technical, logistical and other practical aspects of the distribution service on offer. This has the implication that only assertions pertaining to those circumstances will be supplied. To minimize the risk of error this form will also include a brief summary of the associated constraints.
    Commercial Arrangements. This is a URI supplied by the publisher to identify a web resource specifying commercial aspects of the distribution service on offer. This has the implication that only assertions pertaining to those circumstances will be supplied. To minimize the risk of error this form will also include a brief summary of the any payment that may become due from a subscriber should the offer be accepted.
    Terms and Conditions. This is a URI supplied by the publisher to identify a web resource specifying technical, logistical and other practical aspects of the distribution service on offer. This has the implication that only assertions pertaining to those circumstances will be supplied. To minimize the risk of error this form will also include a brief summary of the associated terms and conditions.
    Statistical Records. This is a URI supplied by the publisher to identify a web resource specifying obligations on either party for the maintenance of statistical records of traffic under the offer including any on which charging may be based.