Kashyap, Vipul wrote:
Is there any work in the literature related to:

- Defining what and when a version is?
- Do all updates necessarily lead to a new version?
- Is there a utility to instance versioning?

The observation about the utility of knowledge base update and revision is an
astute one. IMHO the utility of instance versioning is not clear either.

Just my 2 cents,

A couple of classical references in medical informatics about evolution of biomedical terminologies:

Oliver DE, Shahar Y.
Change management of shared and local versions of health-care terminologies.
Methods Inf Med. 2000 Dec;39(4-5):278-90. Review.
PMID: 11191695 [PubMed - indexed for MEDLINE]

Oliver DE, Shahar Y, Shortliffe EH, Musen MA.
Representation of change in controlled medical terminologies.
Artif Intell Med. 1999 Jan;15(1):53-76. Review.
PMID: 9930616 [PubMed - indexed for MEDLINE]

Oliver DE.
Synchronization of diverging versions of a controlled medical terminology.
Proc AMIA Symp. 1998;:850-4.
PMID: 9929339 [PubMed - indexed for MEDLINE]

Hartel FW, Fragoso G, Ong KL, Dionne R.
Enhancing quality of retrieval through concept edit history.
AMIA Annu Symp Proc. 2003;:279-83.
PMID: 14728178 [PubMed - indexed for MEDLINE]

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