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Clinton Gallagher | 1 Dec 2005 16:04
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RE: Semantic Web Community

<snip />

> You are invited to use "knowledgeweb on the people's portal" 
> - a Semantic Web application for active Semantic Web 
> communities. The application's web address is  
> <http://people.semanticweb.org/> http://people.semanticweb.org.
> 
>  
>  
> You can use the application for the following purposes: 
>  
> - business: inform your colleagues about your current 
> interests and activities, discover and track your 
> communities, find partners for joint deliverables, papers, 
> event organization, project proposals;
>  
> - social and curiosity: get to know your colleagues 
> personally and tell them about yourself, about what you like to do; 
>     
> - explore the Semantic Web community: find out how many male 
> vs. female folks are in Semantic Web area, which counties 
> they come from originally, who share interests with whom.
>  
>  
> Features include:
>  
> - community-driven ontology construction/extension;
> - interfaces to identify and browse communities;
> - dynamic integration of data from KnowledgeWeb portal;
> - easy registration of new members (support of "community friends").
(Continue reading)

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Luigi Selmi | 2 Dec 2005 13:45
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FoafExplorer

The FoafExplorer at http://xml.mfd-consult.dk/foaf/explorer/ doesn't seem to work anymore. Does someone know any other application that does the same ? It was very useful to me to test foaf files. Many thanks.

Luigi Selmi


There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy.

                             William Shakespeare, Hamlet

____________________

Luigi Selmi

P.zza Roselle, 12 00179 Roma

skype: luigiselmi

yahoochatid: luigi_selmi

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Scott Villarosa | 2 Dec 2005 14:09
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RE: FoafExplorer

It was working last week. Perhaps give it a day or so.

From: rdfweb-dev-bounces-KFiPP5oTzY19+/qdhjUmDh2eb7JE58TQ@public.gmane.org [mailto:rdfweb-dev-bounces-KFiPP5oTzY19+/qdhjUmDh2eb7JE58TQ@public.gmane.org] On Behalf Of Luigi Selmi
Sent: Friday, 2 December 2005 11:46 PM
To: rdfweb-dev-KFiPP5oTzY19+/qdhjUmDh2eb7JE58TQ@public.gmane.org
Subject: [rdfweb-dev] FoafExplorer

The FoafExplorer at http://xml.mfd-consult.dk/foaf/explorer/ doesn't seem to work anymore. Does someone know any other application that does the same ? It was very useful to me to test foaf files. Many thanks.

Luigi Selmi


There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy.

                             William Shakespeare, Hamlet

____________________

Luigi Selmi

P.zza Roselle, 12 00179 Roma

skype: luigiselmi

yahoochatid: luigi_selmi

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Fco. Javier Picado Ladrón De Guevara | 2 Dec 2005 18:04
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Presentation and a new add for knows tag.

Hi there,

This is my first post to the list, so i wan to present my and what i'm doing 
with FOAF.

Mi name Is Fco. Javier Picado Ladrón de Guevara, or just Javier, i work for 
IEPALA fundation, a non-profit organization in Spain. We run www.gloobal.net, 
its a (really) big repository of information about non-profit organizations 
and their work. We are now working to make a rdf schema and a comunication 
protocol that make posible data exchanging with other related sites.
For our RDF schema we are using Dublin Core and FOAF extensions (among 
others). So i will be pleased to be helped from you, and to help you (if i 
can). 

For the moment we have a extension for knows tag to descrive relationship 
betwen organizations. Our first try is at
http://www.gloobal.net/schemas/20051201/organizations_relationship.rdf

it descrive some relations before used in gloobal.net, basically:

partner
belongsTo <-> Has (its part of or belongs to, like bell labs y part of 
lucent).
sponsors<->sponsoredBy (give money (or goodies) for nothing or get money, like 
fsf sponsors GNU).
promoter<->promotedBy (publicity or started, like google is a future promoter 
of open office (and other things))
participant<->participedBy (it's part of but not have a control, like w3c is 
participed by many organizations)
supports<->supportedBy (it's the only promoter and sponsor of something, i 
have no example now.)
financial<->finacedlBy (it's finanaced by, like i-mode is financedby 
ntt-docomo)
contractor<->contratedBy (it's contrated, like I contrated some body to fix my 
window's glass)

I'd like suggestions about it.

Please apologize my english,
--

-- 
Fco. Javier Picado Ladrón de Guevara
Informática y redes IEPALA.

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Reto Bachmann-Gmür | 2 Dec 2005 20:51
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Re: "data" URIs for SHA-1 sums in FOAF

Sounds good.

Using an URI instead of a literal has the advantages that it is OWL DL compliant and that there are no language versions as they are possible with the sha1sum literal (which would be a problem for example if in an RDF/XML serialization someone sets the xml:lang attribute on the top-level element, thinking that everything is english).

Why not use urn:hash? (like urn:hash::sha1:fd3f1aaec064645e7d1637140a0ceabe26845dfd)



cheers,
reto

On 11/28/05, Etan Wexler <ewexler <at> stickdog.com> wrote:
Are URIs of the "data" scheme appropriate for identifying SHA-1 sums in
FOAF? Would generic RDF tools (that is, tools that are not specific to
FOAF) have an easier time with URIs than with literals? Would the use of
"data" URIs for inverse-functional properties (IFPs) present an
improvement over the use of literals to implementations of OWL DL and
OWL Lite? What disadvantages come with the use of "data" URIs in FOAF?


Consider an example in N3/Turtle/N-Triples:

_:Etan_Wexler <http://xmlns.com/foaf/0.1/mbox_sha1sum>
<data:,fd3f1aaec064645e7d1637140a0ceabe26845dfd>.

Perhaps the example should more accurately reflect the nature of the
SHA-1 sum:

_:Etan_Wexler <http://xmlns.com/foaf/0.1/mbox_sha1sum>
<data:application/octet-stream;base64,/T8arsBkZF59FjcUCgzqviaEXf0NCg==>.

(Did I miss previous discussion on the use of "data" URIs in FOAF?
Searches reveal much noise but no signal.)

--
Etan Wexler.


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Alexandre Passant | 2 Dec 2005 23:18

FOAF and PHP

Hi,

Just a short mail to inform you that I started to write a few weeks
ago a PHP5 library to retrieve informations from FOAF file without
knowledge of FOAF or RDF.

It provides some functions to get profile information as:

$foaf = new FOAFProfile("http://mywebsite/profile.rdf");
$me = $foaf->root();
echo $me->getName() . " knows " . $sizeof($me->knows()) . " people";

Informations about the project - which is on its early stage - are
available on its gna.org homepage (http://gna.org/projects/phoaf) and
on my weblog (http://apassant.net).

I plan to update and document it soon, as I'm currently writing a
"GoogleMap FOAF explorer".

Cheers,

Alex.

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Reto Bachmann-Gmür | 3 Dec 2005 00:00
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Re: foaf for job rotation?

Hi

This could be a use case for the Role-Vocabulary I proposed at 
http://rdfweb.org/topic/RoleVocab and which seems to be revisited at 
http://xmlns.sehrgut.co.uk/role/.

Extract:

 <rdfs:Class rdf:ID="Role"> 
  <rdfs:label xml:lang="en">Role</rdfs:label> 
  <rdfs:comment xml:lang="en">Describes a Role (Function/Position) agents may have within a
Group</rdfs:comment> 
 </rdfs:Class> 

If we make Participation a subclass of Agent [1] and relax the domain of 
knows to Agent (or make Participation a subclass of Person, but I 
actually see no reason for the restrictive range and domain of knows, 
greenpeace foaf:knows shell, why not?) you could inpersonate the 
participation of your predecessor.

Or probably it would be cleaner to have the Role class itself a subclass 
of Agent, in this case you would have for example

[ foaf:mbox <mailto:reto@...>]  -> that's me, a foaf:Person
[ foaf:mbox <mailto:reto.bachmann@...>] -> that's me as an employee 
of osar, a role:Participation. When I loose this influential position 
this foaf:Agent ceases to exist and you stop sending me those expensive 
Christmas gifts.
[ foaf:mbox <mailto:webmaster@...>] -> that's the webmaster of osar, 
a role:Role which I currently play. Well known to the salary department 
as well as the regularly complaining users of the osar-website.

All three Agents have they distinct social network, lifetime and other 
property-values, but quite a lot of properties seem to be applicable to 
each of them mbox, phone, foaf:knows ...

reto

1. as in the version I'm actually using you can find at 
http://cvs.sourceforge.net/viewcvs.py/*checkout*/knobot/wymiwyg-commons/src/org/wymiwyg/commons/vocabulary/role.rdf

web@... schrieb:

>  Hello everybody,
>
>  I really like the idea behind the foaf-project. However I have a
>  question/suggestion that is not in the FAQ.
>
>  foaf seems rather person-oriented to me at a very first sight. Is it
>  possible to use it at work, too, where due to job rotation it might
>  be quite useful to have the foaf of your predecessor in office? It
>  would make sense to me, if everybody would keep such a formal contact
>  network (call it colleague of a colleague) in addition to and well
>  separated of his private foaf-file. You probably know the problems
>  when you are new and do not know whom to contact/ask. This approach
>  would aim at modelling relations between positions rather than
>  persons.
>
>  Please share your experiences with me.
>
>  Ciao,
>
>  Steffen Mazanek
>
>
>  -------------------------
>
>  _______________________________________________ rdfweb-dev mailing
>  list rdfweb-dev@... wiki:
>  http://rdfweb.org/topic/FoafProject
>  http://rdfweb.org/mailman/listinfo/rdfweb-dev

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Danny Ayers | 4 Dec 2005 11:28
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Third party PPDs?

Got an app here (someone else's - you'll hear more soon enough) which
can make FOAFish docs, only it's mostly for creating data about other
people. There will be some useful doc-level data (foaf:maker,
admin:generatorAgent, dc:source etc), which would usually go in as
properties of the PPD. Only there's a hitch:
[[
The foaf:PersonalProfileDocument class represents those things that
are a foaf:Document, and that use RDF to describe properties of the
person who is the foaf:maker of the document. There is just one
foaf:Person described in the document, ie. the person who foaf:made it
and who will be its foaf:primaryTopic.
]]
http://xmlns.com/foaf/0.1/#term_PersonalProfileDocument

In this app the maker and primaryTopic will be different people. So
I'm wondering whether I should simply stick to foaf:Document here, or
is the fact that maker and primaryTopic will be explicitly different
suggest that a 3rd party PPD would be ok (subject to spec tweaks).

Thoughts?

Cheers,
Danny.

--

http://dannyayers.com

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Kjetil Kjernsmo | 4 Dec 2005 11:40

Re: Third party PPDs?

On Sunday 04 December 2005 11:28, Danny Ayers wrote:
> In this app the maker and primaryTopic will be different people. So
> I'm wondering whether I should simply stick to foaf:Document here, or
> is the fact that maker and primaryTopic will be explicitly different
> suggest that a 3rd party PPD would be ok (subject to spec tweaks).

For my.opera.com data, I have used PPD for each person, but there, I 
thought of it as "allthough the FOAF is generated by me, the Person 
entered the data". So, I thought in terms of "who made the data that's 
here" rather than "who created the model around the data". 

Does that sound reasonable? 

Cheers,

Kjetil
--
Kjetil Kjernsmo
Programmer / Astrophysicist / Ski-orienteer / Orienteer / Mountaineer
kjetil@...
Homepage: http://www.kjetil.kjernsmo.net/     OpenPGP KeyID: 6A6A0BBC

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Danny Ayers | 4 Dec 2005 13:32
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Re: Third party PPDs?

On 12/4/05, Kjetil Kjernsmo <kjetil@...> wrote:
> On Sunday 04 December 2005 11:28, Danny Ayers wrote:
> > In this app the maker and primaryTopic will be different people. So
> > I'm wondering whether I should simply stick to foaf:Document here, or
> > is the fact that maker and primaryTopic will be explicitly different
> > suggest that a 3rd party PPD would be ok (subject to spec tweaks).
>
> For my.opera.com data, I have used PPD for each person, but there, I
> thought of it as "allthough the FOAF is generated by me, the Person
> entered the data". So, I thought in terms of "who made the data that's
> here" rather than "who created the model around the data".
>
> Does that sound reasonable?

I think so.  In the case I'm looking at though, the person who enters
the data isn't the same as the person the data is about...

(I've just used foaf:Document anyhow ;-)

btw, do you know of any living FOAF visualizations? Both the W3C
validator graph view and MortenF's FOAF Explorer seem to have been
down the past few days.

Cheers,
Danny.

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