[foaf-dev] FOAF:dateOfBirth

reto at gmuer.ch reto at gmuer.ch
Sun Feb 10 22:08:38 GMT 2008

I'm not sure about the parent-thing. I don't think there is quite a difference between the properties. 

It might be useful to distinguish
- the point in time of the birth, the precision can be arbitrary (if expressed in utc may be another date than official birthday)
- the date of birth without timezone as used in official documents
- annual birthday anniversary, this is independent of the year of birth but might be based on lunar instead of solar calendar. If the date if Februar 29th it can contain an indication on how it is to be handled in non-leap years.


- original message -
Subject:	Re: [foaf-dev] FOAF:dateOfBirth
From:	"B.K. DeLong" <bkdelong at pobox.com>
Date:		10/02/2008 21:24

Funny you mention this. I was going to suggest <foaf:dateOfBirth> be a
parent to <foaf:birthmonth>, <foaf:birthdate>, and <foaf:birthyear> for
reasons that when it comes to trust relationships, you might only want to
publicize your birthmonth and date but not year or for reasons of age etc.
Privacy protection....


On Feb 10, 2008 3:54 PM, Uldis Bojars <captsolo at gmail.com> wrote:

> Hi All,
> foaf:dateOfBirth is used in a number of FOAF profiles (e.g., danbri,
> LiveJournal, ...) but it does not appear anywhere in the FOAF
> Specification or the namespace RDF file.
> If people are using it, should it be added to the specification?
> In many cases people are exporting the full date (incl. the year) and
> the existing foaf:birthday, as defined now, would not be appropriate
> (but it could be used by LiveJournal which is exporting the birthday w/o
> a year).
> Uldis
> [ http://sioc-project.org/ ]
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> foaf-dev mailing list
> foaf-dev at lists.foaf-project.org
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B.K. DeLong (K3GRN)
bkdelong at pobox.com

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