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Subject: RE: [xri] polyarchical -vs- hierarchal
Les, Actually, in XDI (both the ATI and RDF
models), all link relationships are represented as delegations (either *! delegation,
or =@+$ delegation) inside a single XRI segment. All hierarchical parent/child
relationships are represented as forward-slashes (different segments). When you create a link between two
resources, you are naming the arc that connects the two nodes. So for @ootao,
you first need a starting node, which is @ (the “arc from nowhere”),
and then “ootao” is the link to the next node. The same goes for
+west -- + is the starting node, and “west” is the link (arc) to
the next node. In @ootao+west, @ is the starting node, “ootao”
is the link/arc to the second node, and “+west” is the link/arc to
the third node. It is true that + may point “west” to a different
node (and different XRD) that @ootao points “+west”. That’s the
difference between their contexts. However the purpose of the + namespace is to
provide common context (generic identifiers), so the idea is that both +west
and @ootao+west point to resources that serve as THEIR representations of the
generic subject “west”. In the + dictionary space, this
representation should be a definition. In the @ootao space, it could be any
resource that @ootao identifies (and wishes others to be able to generically
identify) as “west”. Note that if using “+west” all by
itself might be ambiguous, @ootao can do the same thing Wikipedia does and add
more context (Wikipedia refers to this as “disambiguation” –
see http://en.wikipedia.org/wiki/Wikipedia:Disambiguation
for a great summary of this.) To do this, @ootao could create XRIs such as: @ootao+office+west @ootao+division+west Hope this helps, =Drummond From: Chasen, Les
[mailto:les.chasen@neustar.biz] Drummond – In a conversation today, you stated, I think, that we need
global subsegments so that we can move from simply a hierarchical relationship
to a polyarchical one. I think this means that with the advent of global
subsegs we now can move from one hierarchy to another one. I think
in XDI you call these things links. I thought we support this today
through the use of REFs in the XRDS. Now, I suppose, that you are
proposing that we move this notion into the syntax layer. These examples of hierarchical XRIs truly show local
delegations. @ootao*west @ootao*(+west) These examples of polyarchical XRIs demonstrate a global
relationship (link) @ootao+west @ootao+west*steve Is this accurate? If so, my main heartburn is that
since +west in @ootao+west as currently proposed is in the context of
@ootao. This means it could be completely different then the view from
+. If we are really linking to another namespace, +west, we should get
+’s view of west not @ootao. Thoughts? contact: =les chat: =les/skype/chat |
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