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Subject: Minutes: XDI TC Telecon Thursday 1-2PM PT 2008-04-24


Following are so minutes for the unofficial telecon of the XDI TC at:

Date:  Thursday, 24 April 2008 USA
Time:  1:00PM - 2:00PM Pacific Time

ATTENDING

Fen LaBalme
Kermit Snelson
John Bradley
Victor Grey
Markus Sabadello
Drummond Reed 
Bill Barnhill 
Giovanni Bartolomeo


AGENDA

1) VOTE ON CO-CHAIR TRANSITION AND CHARTER CLARIFICATION 

Both ballots are open - please vote ASAP!

	Co-Chair Transition:
	http://www.oasis-open.org/apps/org/workgroup/xdi/ballot.php?id=1451

	Charter Clarification:
	http://www.oasis-open.org/apps/org/workgroup/xdi/ballot.php?id=1456


2) DATA SHARING WORKSHOP

John and Drummond reported that there was strong interest in XDI at the
workshop. Several sessions focused on XDI and XDI-related data sharing
applications, most notably ooTao's i-pages, which use the OpenSocial API in
conjunction with XDI to connect to different data sources. Kevin Marks of
Google pronounced i-pages "cool!"


3) UPDATE TO XDI RDF MODEL DOCUMENT

V10 has been posted at:
	
http://www.oasis-open.org/committees/download.php/28080/xdi-rdf-model-v10.pd
f

The key change was to replace the $type predicate with the $a predicate
because $a is the root of inheritance relations. This simplification further
reinforces the utility of the XDI RDF metamodel and the $a, $is, and $has
grammar.

Giovanni reported that not all the example documents consistently use the $n
format for numbered instances.

# DRUMMOND to update V11 to correct these.


4) TERM "XDI LINK"?

In recent discussions it has been proposed that when the object of an XDI
statement is an XRI (in the XML serialization, a <ref> tag), we call this an
"XDI link" because it is a link between two XDI resources.

Bill's feedback was to make sure it didn't "muddy the waters" with regards
to our term, "link contract".

John mentioned that in the ATI model, a link is an explicit tag and always
represents a link. Thus for the short term there might be some confusion
between the two models.

The conclusion was that we will continue to informally explore this to see
how well it works or doesn't work.


5) TECH TOPIC: XDI DICTIONARY AND XDI REASONER

Our tech topic this week was the XDI dictionary and XDI reasoner discussion
we started on the list. Wikipedia has a good article on semantic reasoners:

	http://en.wikipedia.org/wiki/Semantic_Reasoner 

Drummond created a wiki page to capture the email thread for further
discussion:

	http://wiki.oasis-open.org/xdi/XdiReasoners

Our conclusion after talking over the recent email thread on this subject
(see http://lists.oasis-open.org/archives/xdi/200804/msg00034.html) was that
Giovanni was correct that you could not prove through the dictionary
Drummond provided on the XdiReasoners wiki page that all six XDI addresses
there identify the same literal because the dictionary had specified that
+phone could be EITHER a literal or an object.

# DRUMMOND to capture this on the wiki page. 


6) REMINDER OF UPCOMING INFORMAL MEETINGS

* Dinner on Thursday night, May 1, during the OASIS Open Reputation
Management Systems (ORMS) TC meeting, Santa Clara, CA - more info to be sent
to the list next week (probably mid-day Thursday)

* Internet Identity Workshop + Data Sharing Workshop + XDI TC F2F, May
12-16, Mountain View, CA


7) FUTURE MEETINGS

The Burton Catalyst conference will tentatively be attended by Bill,
Drummond, Paul Trevithick, and probably John.



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