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titleTable of Content

Table of Contents



From Last Meeting

  • Lynette - Update activity streams document to more closely follow the standard.

This Week

  • TBD



Meeting Materials



Recording: Activity Streams - Activity Types: Moving closer to the standard (2021-08-16)


Notes were taken directly in the Activity Streams document as comments with general discussions captured here.


From audience perspective…


Is there an audience that would prefer a notification only?

Include rdf_patch?

For LC, Stream has just URI and that that entity was updated.


Doesn’t seem like it would be a big deal to have to do two steps to get each change… 1) read the notification in the activity stream, 2) follow relationship URL to get the rdf_patch

Complete History vs. Recent Notifications

Complete history =

  • baseline download + all changes since baseline as they happen
  • multiple changes to an entity means the entity appears in the activity stream multiple times
  • changes are dated to indicate when the change occurred
  • includes patch if available  


  • maybe baseline download
  • may include all entities that have changed since the baseline was created
  • if an entity has changed more than once, it is collapsed into a single notification with the latest change date
  • no patch data


Need to provide the authoritative patch sequence.  If I modified on July 1, and then take a patch on Aug 1, how can I refer to the changes if the changes in the later patch if they were adjusted in a way in the July patch.


Providing RDF patch could be optional.  For authorities that can provide a patch, then we provide a spec for what that would look like.  For authorities that do not track low level information, this would be no worse than what they currently have.


Future Topics

  • Notification to a single institution when a requested entity that was missing becomes available.  This will likely be outside the main change management stream.
  • Value of diagraming to express changes as a means of conveying information around where data is being produced, where it goes, etc.
  • Partial splits and partial merges.