[rdfweb-dev] PPD

[Dan Brickley]

* Ian Davis <iand at internetalchemy.org> [2004-02-06 08:48+0000]
> Hi Marc,
> 
> Thursday, February 5, 2004, 10:32:17 PM, you wrote:
> 
> > Choo-Choo - all aboard!
> 
> > Without being able ot tell who the FOAF is about - we got nothing.
> 
> Ridiculous. Every foaf document clearly says who it's about, but it
> may be about more than one person.

The ones that use foaf:topic mention one or more things that they're
about. The ones that use foaf:made mention who made them. PPD is a 
slight extension of 'I made this and I am one of its topics', which we 
could say todo. PPD implies 'I made this and I am its primary topic'.

> What are the use cases for having a single document for a single
> person? 

Not single; there could be others.

A lot of the export-from-social-network or other online accounts 
are like this. A file all about some person. When the site is 
operating on behalf of the described individual, PPD gives a way of 
making that clear. Contrasting case is activist/political stuff, 
eg. foafcorp, where the describer and the describee will often see 
things rather differently. 

>	I can think of many where it's important to know that the
> statements being made are made by the person they're about but none
> where it's important that they're all self-contained in a single file.

Agreed. For any PPD, there is a person whose PPD it is. But for any
person, there may be many PPDs.

> Tell me which person my marriage certificate is "about". Then ask my
> wife.

:)

Dan
> 
> 
> Ian
> 
> -- 
> http://internetalchemy.org | http://purl.org/NET/iand 
> Working on... Pepys <http://www.innovateer.com/products/pepys/>
> 
> 
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