A brief overview of the ILRT MedCERTAIN work on aggregation tools, software and applications.
Our MedCERTAIN developments are divided into two broad categories: metadata production and metdata consumption. The production tools focus on creation of rating and evaluation metadata; the consumer tools focus on the interchange, querying, storage and use of this data by a diverse family of applications.
We can show...
An RDF Vocabulary for endorsements. Some sample data (which could be derrived from a MedCERTAIN database). [med2.xml]
this uses two attributes: med:assuredby med:ratedbadby
Using generic technology for cross-domain metadata query. Compare a medcertain example with a non-medical RDF query example query (from an RSS portal application):
"find pages that advertise jobs, and the salary of the job, where the salary is greater than 55000".
eg.1: SELECT ?z, ?a FROM http://ilrt.org/discovery/2000/11/rss-query/jobs-rss.rdf, http://ilrt.org/discovery/2000/11/rss-query/jobs.rss WHERE (job::advertises ?x ?y) (job::salary ?y ?z) (job::title ?y ?a) AND ?z > 55000 USING job for http://ilrt.org/discovery/2000/11/rss-query/jobvocab.rdf#
A simple medically themed RDF query example (same software; different query and data...):
"Find pages (and their Dublin Core titles)and services (plus Dublin Core titles) where the service endorses the page."
eg.2: SELECT ?page, ?service, ?title, ?who FROM http://ratings.example.com/some-data.rdf WHERE (medx::endorses ?service ?page) (dc::title ?page ?title) (dc::title ?service ?who) USING medx for http://medcertain.org/vocab/medx# dc for http://purl.org/dc/elements/1.1/
We can use RDF queries against RDF data loaded from the Web or other sources (optionally checking digital signature information). The query language allows for matching against data structures defined as rdf vocabularies, and is designed to look like a simplified version of SQL. It supports functionality comparable to the PICS-Rules specification and hence can serve to characterise diverse policies defined over MedCERTAIN data.
What this shows:
RDF query: ILRT Squish software distribution, http://swordfish.rdfweb.org/rdfquery/ RSS tools: Redland http://www.redland.opensource.ac.uk/rss Reuters RDF Site Summary (RSS) file: http://www.reutershealth.com/eline.rdf
W3C Semantic Web Activity - advanced development - includes focus on annotation tools (Annotea pilot) EU Semantic Web call - june 2001 (support for generic RDF tool development) other client applications: re-contact Mozilla/NS6 team when have Finnish pilot data Netscape 6.0 shipped; AOL may use for AOL interface as it matures. RDF-based
Recent public release of W3C annotations project - Annotea (tutorial) -- good time to discuss shared vocabulary for annotations appendix: ReutersHealth RDF data feed