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Subject: Bill and Giovanni - special note about today's call
Following are the minutes of the unofficial telecon of the XDI TC at:Date: Friday, 24 February 2012 USATime: 9:00AM - 10:30AM Pacific Time (16:00-17:30 UTC)THE ETHERPAD LINK FOR TODAY IS:ATTENDINGMike SchwartzDrummond ReedJoseph BoyleMarkus SabadelloGUESTSKari LippertCameron Hunt1) IDTRUST BUDGET PROPOSALDrummond had a call with the OASIS IDTrust member section staff. This resulted in revisions to the proposal which we need to review:Drummond said the key revisions needed were:
- Clarification that deployment of the public test servers was a key step towards finishing the XDI 1.0 spec suite.
- Clarification on the breadth of involvement of TC members.
- Setting a deliverable date of the end of 2012, producing a final report at that time, and then optionally applying to renew in 2013.
There was a consensus that the proposal was ready to submit.# DRUMMOND to send email to Dee.2) OPEN SOURCE PROJECT UPDATESMike reported that the OpenXDI Project implemented binary storage, so that if a datatype is specified in the value of the data: URI, then it is now stored in a binary LDAP node.Mike also reported that no code change to OxServer or OxGraph is necessary to support literal contexts. It will result in a change to OxModel. The nested roots work is still waiting.Markus reported that he's been doing some work on XDI Squared, and is next looking at implementing it on the Freedom Box, as there is a thread on the VRM mailing list about p2p usage of VRM.Drummond said Phil Windley has published a blog post about how KRL (Kinetic Rules Language) is going to add XDI support, so that KRL will be operate on a consistent semantic data interchange layer.This is very encouraging from both an adoption and engineering standpoint, as Phil is very well recognized as a technology pioneer.# MARKUS, MIKE, DRUMMOND to create a page on the XDI TC wiki with a directory of the XDI open source projects.3) UPDATED XDI GRAPH PATTERN DOCUMENTDrummond uploaded a new version that solves one additional key issue:The key issue was how to semantically distinguish single-valued contexts from multi-valued contexts. This not only makes it possible to algorithmically compose XDI addresses, but makes XDI dictionary construction much easier. Drummond showed examples of both single-valued and multi-valued contexts, and the initial reaction was positive.4) NESTED ROOT CONTEXTSMike asked about the use cases for nested root contexts. Drummond clarified the constraints:
- Root nodes can only be subcontexts of other root nodes.
- Every local graph still has only one local root node whose XDI address is (). All other root nodes must be nested under this.
The primary use case is XDI discovery, i.e., the ability to ask one local graph for metadata about another local graph, e.g., its URI(s). Such metadata could be considered cached, or it could be fully subscribed, since it is essentially a remote copy of self-description data.5) XDI QUERYMike Schwartz and Yuriy Zabrovarnyy sent an email outlining why they don't believe XML Path & JSON Path are good models on which we should based XDI Query:Mike clarified that having an XDI Path capabiility could be very useful, but on the client side, not on the server, i.e., it is much more feasible to implement on a return graph.It also needs to as efficient as possible on the network.# MIKE will post a proposal on the XDI TC wiki and send an email to the list with a link for discussion. We will make this the focus of next week's call.6) NEXT CALLThe next call is next week at the regular time.
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