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Subject: Minutes: XDI TC Telecon Friday 2014-12-19

XDI TC Minutes

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

Date:  Friday, 19 December 2014 USA
Time:  09:00AM - 10:30AM Pacific Time (16:00-17:30 UTC)


Markus Sabadello
Drummond Reed
Peter Davis
Hubert Le Van Gong
Joseph Boyle
Les Chasen



Phil Windley



Report from XDI editors subcommittee


The editors discussed the mechanism to which they agreed so that the XML Docbook files that are checked into Kavi. There has been a challenge to access browser-viewable versions of these spec documents due to the difficulty of maintaining stylesheet associations. The editors discussed adding an automatic pull mechanism so that browser-viewable versions of the XML Docbook files at Github, which are posted as PDF files stored in the OASIS Kavi system, would be available via the XDI.org web servers.

#ACTION: Markus will set up the automatic pull mechanism.

#ACTION: Peter will confirm how the stylesheet association mechanism works.


Peter and Hubert reported that they hadn’t decided on the name for the spec. Hubert has started a Word document that gathers and organizes the thinking they have done. They will continue to advance that over the holiday period.

Drummond said that he had another conversation with a partner company he is working with to answer questions about JSON-LD and XDI. He said he’d like to finish the short paper that he’s started explaining the challenges with the RDF graph model that the XDI graph model addresses so this becomes available as a resource when this question is asked.

ACTION: Drummond to finish this paper and post it.

Graph Model Structure

Drummond and Joseph have worked more on the GraphModelStructure wiki page and the tree view of node types:


Drummond did a walk-though review of all the syntactic constructs in the tree view to explain why they were needed. He used the analogy of the periodic table, which applied the underlying principles of atomic structure to figuring out all the possible elements. It makes it easier to see the common patterns across the different constructs.

Joseph and Drummond have been discussing the best way to present this information in the XDI Core spec. Joseph has created several matrices that take the “periodic table” approach to summarizing node types and the associated syntax. A snapshot of two of those approaches appears below, however it is not yet been brought current with updates Drummond made to the Graph Model Structure table.

Action items coming from this discussion:

#ACTION: Drummond and Joseph to review the additions to the table.

#ACTION: Joseph to update the matrices.

#ACTION: Joseph to update the proposed ABNF for the XDI Core spec.

Markus then shared some thoughts that on requirements for syntax and use of variables.


XDI Policy and Connections

We did not further discuss this topic.

Transactional integrity

We did not further discuss this topic.


We set the following call schedule for the holidays:

  1. No calls on Friday December 26.

  2. No Editor’s call on Friday January 2; optional TC call for those who want to attend but no decisions to be made.

  3. Next regular set of calls (Editor’s and Plenary) will be Friday January 9.

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