HCLSIG BioRDF Subgroup/Meetings/2006-03-27 Conference Call

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Conference Details

  • Date of Call: Monday March 27, 2006
  • Time of Call: 11:00am Eastern Time
  • Dial-In #: +1.617.761.6200 (Cambridge, MA)
  • Participant Access Code: 246733 ("BIORDF")
  • IRC Channel: irc.w3.org port 6665 channel #BioRDF (see W3C IRC page for details)
  • Duration: ~1 hour
  • Convener: Susie Stephens
  • Scribe: John Barkley

Draft Agenda

  1. Review progress on task templates and tasks
 (Brian Osborne, Olivier Bodenreider, Karen Skinner)
  1. Overview of SPARQL and GRDDL by Eric Prud'hommeaux, DanConnolly, and Brian McBride
  some GRDDL slides and some SPARQL slides

Meeting Minutes

Attendees: John Barkley, Olivier Bodenreider, Kei Cheung, DanConnolly, Brian Gilman, Joanne Luciano, Scott Marshall, Brian McBride, Eric Prud'hommeaux, Daniel Rubin, Alan Ruttenberg, Karen Skinner, Susie Stephens, Hanqing Xie

Review progress on task templates and tasks

This agenda item was deferred until after the presentations.

Overview of SPARQL and GRDDL by Eric Prud'hommeaux, DanConnolly, and Brian McBride

Dan Connolly presented the GRDDL slides (http://www.w3.org/2003/g/talk62/slides.html).

Questions/discussion included:

  1. Dan and Alan discussed the difference between GRDDL and just implementing a service for returning results from a data resource query in RDF. Dan noted that if you already have a service for returning RDF, GRDDL is not needed (except as noted in [2] following). GRDDL is a specification for adding a reference within an XHTML page to a transformation that will output the contents of the page in RDF. The intent is for this transformation to be processed within the browser, not on the server - although there is no reason why it could not be done server side.
  2. Dan stressed a major advantage of GRDDL: because the transform is specified by the data source provider, the result is an "official" RDF version of the page, i.e., in accordance with the page author's view.

Eric Prud'hommeaux presented the SPARQL slides (http://www.w3.org/2006/Talks/0327-ep-SPARQL/)

Questions/discussion included:

  1. The question was asked about what can one do with the RDF returned by CONSTRUCT and DESCRIBE result formats. Eric answered that the results can be used by RDF processors, e.g., RDF from CONSTRUCT can be used for a new query, and RDF from DESCRIBE can be used for semantic browsing.
  2. Eric and Alan discussed the differences between SPARQL and Wilbur. While the intent of SPARQL is to return inferred facts, it does not necessarily identify them as such, as is the case with Wilbur. Furthermore, two different SPARQL implementations may return different inferred facts from the same RDF knowledge base.

Since the hour was now past noon Eastern, Susie ended the official part of the call with apologies to those who were to report task templates and tasks (Agenda item [1]).

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