Hi, Ryan, et al.,
1) The changes that are made to LCSH represent all types of changes:
Changes to the headings: including singular to plural, authorized form, syntax, etc., following the rules in the Subject Headings Manual.
Addition, correction, or deletion of classification numbers as appropriate.
Changes to the references: addition or correction of alternate terminology to conform to the rules (direct vs. inverted; vernacular vs. English forms; etc.), or to update terminology.
Corrections to hierarchies: assignment of correct broader and related terminology.
Correction or addition of supporting evidence.
Correction or addition of any notes (scope notes, usage notes, etc.)
In short, anything that is in the record for the heading can be changed by the LCSH editors.
2) I think the Atom feed just reports headings that have been changed, not what the changes were.
Does this help?
From: Authorities and Vocabularies Service Discussion List [mailto:[log in to unmask]] On Behalf Of Ryan Shaw
Sent: Friday, November 04, 2011 4:22 PM
To: [log in to unmask]
Subject: Types of changes documented in <http://id.loc.gov/authorities/feed/>?
Where might I find some documentation of the various kinds of changes documented in <http://id.loc.gov/authorities/feed/>?
I guess I'm actually looking for two pieces of information:
1) A comprehensive list of the kinds of changes that might possibly appear in the weekly LCSH updates, and
2) whether or not the Atom feed indicates the kind of change, or just indicates that a change was made.