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Subject: RE: [xdi] Adding a second XDI TC weekly telecon on implementation -10AM PT Fridays


I understand. Is there a time in the afternoon (Pacific time) where you and the others are available?  Unfortunately there's no way I can dial into a meeting before noon Pacific time.

-Bill
________________________________________
From: Michael Schwartz [mike@gluu.org]
Sent: Monday, January 24, 2011 10:23 AM
To: Barnhill, William [USA]
Cc: Drummond Reed; OASIS - XDI TC
Subject: RE: [xdi] Adding a second XDI TC weekly telecon on implementation - 10AM PT Fridays

I'm not available at that time.

- Mike


On Mon, 24 Jan 2011, Barnhill, William [USA] wrote:

>
> Can we please have this 2nd call later in the day? Ideally, 2pm Pacific Time?  This allows those of us who are not able to call in from work to attend.
>
> -Bill
> ________________________________________
> From: drummond.reed@gmail.com [drummond.reed@gmail.com] On Behalf Of Drummond Reed [drummond.reed@xdi.org]
> Sent: Monday, January 24, 2011 12:36 AM
> To: OASIS - XDI TC
> Subject: [xdi] Adding a second XDI TC weekly telecon on implementation - 10AM PT Fridays
>
> XDI TC Members and Observers:
>
> This is just to make sure that all XDI TC members note that in the
> last meeting, per the minutes below, we decided to add a second weekly
> telecon devoted exclusively to implementation questions/issues.
>
> This call will be at 10AM Pacific Time on Fridays, and will be hosted
> by Gluu, courtesy of Mike Schwartz. Mike will send further call-in
> details to the list.
>
> Although this call, like our standing weekly telecon at 1PM PT on
> Thursdays, is unofficial (meaning voluntary and not required to
> maintain active status), we invite everyone interested in
> implementation issues to attend.
>
> Adding this second call will give us more time to spend on the first
> call focusing on issues of semantics and related subjects that we need
> to close to proceed with the 1.0 specifications.
>
> =Drummond
>
> ---------- Forwarded message ----------
> From: Drummond Reed <drummond.reed@xdi.org>
> Date: Thu, Jan 20, 2011 at 7:00 PM
> Subject: Minutes: XDI TC Telecon Thursday 1-2:30PM PT 2011-01-20
> To: OASIS - XDI TC <xdi@lists.oasis-open.org>
>
>
> Following are the minutes of the unofficial telecon of the XDI TC at:
>
> Date:  Thursday, 20 January 2011 USA
> Time:  1:00PM - 2:30PM Pacific Time (21:00-22:30 UTC)
>
> ATTENDING
>
> Markus Sabadello
> Giovanni Bartolomeo
> Drummond Reed
> Michael Schwartz
> Joseph Boyle
>
> GUEST
> Jay Glasgow
>
>
> THE GOTOMEETING FOR TODAY IS:
>    https://www2.gotomeeting.com/join/969244355
>
> THE IDEARPAD LINK FOR TODAY IS:
>    http://xdi.idearpad.org/19
>
>
> 1) REVIEW GIOVANNI BARTOLOMEO'S PDF NOTES ON THE GLOBAL GRAPH
>
> We discussed Giovanni's document at:
>
>  http://www.oasis-open.org/committees/download.php/40757/notes%20on%20the%20global%20graph.pdf
>
> Giovanni first explained that one purpose of this document is to
> explain the differences in XDI and RDF graphs, and to show where the
> two of them fit together. It starts by showing that relational and
> literal arcs are identical in both; the difference is the contextual
> arcs, which only exist in XDI graphs.
>
> XDI synonyms are established by having multiple contextual arcs
> pointing to the same node. This is illustrated in the third graph,
> where the final node is identified by both a single arc from the root
> and from another arc from a child of the root.
>
> Giovanni's paper also shows how an XDI graph  can express "same
> identity different context", which we know from a  paper at the W3C
> RDF Workshop is an issue in RDF, because it does not  have an explicit
> facility for expressing context.
>
> Another capability illustrated in the document that is unique to XDI
> graphs is the ability to identify properties in the context of a
> specific subject, and make statements about those properties in that
> context. Giovanni said that this is currently an active topic within
> the Linked Data community.
>
> Another pattern shows how to associate metadata on a property within a
> context by expressing that property as a subcontext. And example is
> the property +friend within the context =abc. For purposes of
> describing this property, this becomes =abc+friend. This has subtle
> differences from the "property on a property" semantics that Drummond
> proposed on our last call before the holiday break. However Drummond
> now agrees that this pattern looks like the best one for the uses
> cases Giovanni's document discusses.
>
> Giovanni proposed that this same approach can be extended to the the
> objects of a relational property, i.e., if you want to talk about the
> object of the XDI statement =abc/+friend/=xyz, that subject can be
> identified in that context by the address =abc+friend=xyz.
>
> Drummond pointed out that the fact that this shows that =xyz can be
> correlated between both contexts -- global (where it is just =xyz),
> and the =abc+friend context, where it is =abc+friend=xyz. He agreed
> with Giovanni that this is not something RDF and Linked Data appears
> to be able to handle today.
>
> # GIOVANNI will upload a revised copy of the document with the one
> erroneous graph fixed and with revisions to the final graphs about
> multi-valued properties.
>
> # DRUMMOND will upload a revised set of graphs showing the patterns on
> which his example dictionary is based.
>
> We will discuss these two documents on next Thursday's call.
>
>
> 2) MIKE SCHWARTZ USE CASES
>
> We did not have time to discuss Part 2 of MIke's use cases for Poken
> friend requests across LDAP boundaries, but see the next item.
>
>
> 3) CALL FREQUENCY
>
> We discussed the potential for a second call focused on
> implementation, so we can make sure that each week we have time for
> calls on both semantics and implementation. Mike volunteered 10AM PT
> on Fridays.
>
> # DRUMMOND will send an email to the list proposing a second telecon
> on implementation at 10AM PT on Fridays.
>
>
> 4) NEXT CALL
>
> The next semantics call will be next week at the regular time. The
> next implementation call will be Friday January 28 at 10AM PT.
>
>
>
> ------------
> ONGOING ISSUES LIST
>
> Each of these is a candidate for the agenda for future calls.
>
> * PROPOSED CONSTRUCTS/OPERATORS FOR XDI
>
> Discuss the following wiki page originally posted by Giovanni:
>
> http://wiki.oasis-open.org/xdi/XdiNewFoundation
>
> * DICTIONARY STRUCTURE
>
> Mike would like an example of the PDX dictionary as soon as we can do it.
>
> *   EQUIVALENCE SEMANTICS
>
> Close on whether we need an additional $ word that is the equivalent
> of Higgins Personal Data Model (PDM)  semantics   of h:correlation,
> which is not as strong as $is.
>
>     http://lists.oasis-open.org/archives/xdi/201006/msg00036.html
>
> * COOL URIS
>
> Continue previous discussion about the use of standard RDF URIs in XDI:
>
> http://lists.oasis-open.org/archives/xdi/201006/msg00023.html
>
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