How far back does the SKOSification of LCSH concepts go? Would a
heading deleted in 1992 have a corresponding SKOS URI? (The change
feed seems to go back to 1986, though I can't seem to find any old
On Mon, Nov 7, 2011 at 5:13 PM, Simon Spero <[log in to unmask]> wrote:
> A merge of two headings will result in at least one previously authorized
> heading becoming a UF.
> A split is harder to automatically recognize, as the clues won't generally
> be visible in the skos (part of the concept may remain attached to the old
> label, with a new NT; or the old heading may be eliminated, and the new
> headings be co-hyponyms of the older, now no longer authorized term. (This
> latter pattern, which is essentially USE A or B, can be modeled in skos by
> creating a concept with no prefLabel, the old term as altLabel, with the new
> terms as NT, and all common hyperonyms as BT.
> On Nov 7, 2011 4:54 PM, "Ryan Shaw" <[log in to unmask]> wrote:
>> On Mon, Nov 7, 2011 at 4:34 PM, Ed Summers <[log in to unmask]> wrote:
>> > If you are able to diff the last concept you have against the updated
>> > one I think you can characterize the changes.
>> That should cover changes to the labels or relationships associated
>> with a concept, but I'm especially interested in cases where we might
>> want to say that a concept "merged" into another or "split" in to two
>> or more new ones. And I'm not sure those could be detected from
>> diffing alone. (In fact I'm not even sure whether there would be
>> agreement on what kinds of changes could be characterized as "merges"
>> or "splits.")