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Subject: Minutes: XDI TC Telecon Thursday 1-2PM PT 2010-04-01

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

Date:  Thursday, 01 April 2010 USA
Time:  1:00PM - 2:00PM Pacific Time (21:00-22:00 UTC)


Giovanni Bartolomeo

Markus Sabadello

Joe Boyle

Drummond Reed

1) PDX

Drummond explained that there is work underway to develop a dialect of
XDI for personal data exchange called PDX. At least three companies
are pursuing this and a number of others are interested. He will keep
the TC appraised of progress.


Our main topic was to discuss the different options for expressing
$has relationships as outlined in this thread:


We discussed whether the three examples Drummond provided are
semantically equivalent. Giovanni felt that while they may be
logically equivalent, they were not resolution equivalent. Drummond
explained that this could create a huge interop problem if the TC does
not address this by specifying a normalized or canonicalized form of
the XDI graph.

Giovanni preferred the second example, where every predicate is a
single subsegment. Others did not have a strong opinion yet.

# ACTION: Giovanni will write up rationale for why the second form
should be the canonical form.


Note: NO CALL NEXT WEEK due to spring break in the U.S.

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