Hi all, 

[ Apologize if this question has been answered before in this group. ] 

Recently, I was working on a project where we were just reusing existing terms 
for building a knowledge base for a private company. When we were considering 
using for example foaf:birthday, I was told by someone that it was marked 
“unstable” in the vocabulary file. The normal reaction would have been “so 
what?” ;)

However I found the question somehow interesting in the sense that the vocab 
defining the term status of the vocabulary [1] uses“unstable” for all the 
properties in the vocabulary, and of course it is reused by many vocabularies 
[2]. At the meantime, FOAF is one of the most popular vocabulary used in the 
LOD cloud (stats for 2014 here [3] ) and I guess there are many data modeled 
with some of the terms flagged as “unstable”. I found an example dataset here 
for Nobel Prize [4]. 

Is there any risk for data publishers or consumers (e.g., visual applications) 
to reuse “safely” terms flagged as “unstable”? 
Do you know any study on this type of questions? 

Any experience or thought is more than welcome to propose a more rationale 
answer to my project partner.

Best,
Ghislain

[1] http://www.w3.org/2003/06/sw-vocab-status/ns# 
<http://www.w3.org/2003/06/sw-vocab-status/ns#> 
[2] http://lov.okfn.org/dataset/lov/vocabs/vs 
<http://lov.okfn.org/dataset/lov/vocabs/vs>
[3] http://linkeddatacatalog.dws.informatik.uni-mannheim.de/state/ 
<http://linkeddatacatalog.dws.informatik.uni-mannheim.de/state/>  
[4] http://data.nobelprize.org/ <http://data.nobelprize.org/> 
---------------------------------------
Ghislain A. Atemezing, Ph.D
Mail: ghislain.atemez...@gmail.com
Web: https://w3id.org/people/gatemezing <http://www.atemezing.org/>
Twitter: @gatemezing
About Me: https://about.me/ghislain.atemezing 
<https://about.me/ghislain.atemezing>








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