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B.K. DeLong | 1 Sep 2005 20:14
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FOAF, YASNs, Trust and Katrina

http://www.livejournal.com/users/bkdelong/128218.html

OK, so it's a little ambitious but MoveOn.org has taken the step to 
start collecting data. However what about trust? I'd feel much more 
comfortable with a  friend or family member of another friend or even 
a FOAF if I could establish the trust.

Perhaps it's the techno-optimist in me but I think the Hurricane 
Housing project rejiggered with a bit of Trust, Relationships and 
FOAF will make it much more useful. How can I help and how should we 
start? Ideas?

--
B.K. DeLong
bkdelong@...
+1.617.797.2472

http://bkdelong.mit.edu                       Work.
http://www.brain-stream.com               Play.
http://www.the-leaky-cauldron.org        Potter.
http://www.city-of-doors.com               Sigil.
http://www.hackerfoundation.org          Future.
http://www.osvdb.org/                         Security.
http://www.wkdelong.org           Son.

PGP Fingerprint:
38D4 D4D4 5819 8667 DFD5  A62D AF61 15FF 297D 67FE

FOAF:
http://foaf.brain-stream.org
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Bram Neijt | 5 Sep 2005 14:07
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Metadata in XML

Hi.

I'm trying to create an XML metadata file to facilitate file
identification on peer to peer networks. This means the file must
carry non standard hash information (like the MD4 of chunks of MD4
etc.).

I've taken a look at the Dublin Core but, being a beginner, I can't
really find a good way of putting these hash values into an XML file
without extending any standard I could find.

Is there a general enough standard in which I can place this information?

Greetings,
  Bram

PS Here is an example of what I currently use:
<!-- XML and DOCTYPE etc. -->
<metalinks>
 <link>
   <filename>something....</filename>
  <filename type="http-safe">something...</filename>
  <size>35675</size>
	<digests>
			<digest type="ed2k">f785a4f031231a3.....</digest>
			<digest type="gnunet070">9HKOVK....</digest>
			<digest type="md5">087a0...</digest>
			<digest type="sha1">8d913bfdf3e97d4489a.....</digest>
		</digests>
	</link>
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Chris Gierke | 5 Sep 2005 16:28
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a survey about Social Network profiles

Hi Everyone,

I am a student at the SAE College, Byron Bay, Australia. My research 
project for the Bachelor degree is about Social Networks on the internet 
and how a standard vocabulary for a profile could help to offer 
interoperability between different services.

For that I am conducting a survey to find out what users expect, want, 
do not want or would like to see in a profile, so if you could just 
follow the link and participate in the survey it would help a lot. It 
shouldn't take you more than 10 minutes, probably even less.

The outcomes will then be translated into rdf using the FOAF vocabulary 
as a basis if you are wondering what all this has to do with rdf.

Thanks a lot im advance
Chris

http://freeonlinesurveys.com/rendersurvey.asp?id=113071

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Dan Brickley | 5 Sep 2005 18:40
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Re: Metadata in XML

hi there

Bram Neijt wrote:

>Hi.
>
>I'm trying to create an XML metadata file to facilitate file
>identification on peer to peer networks. This means the file must
>carry non standard hash information (like the MD4 of chunks of MD4
>etc.).
>
>I've taken a look at the Dublin Core but, being a beginner, I can't
>really find a good way of putting these hash values into an XML file
>without extending any standard I could find.
>
>Is there a general enough standard in which I can place this information?
>  
>
Depending on exactly what you're doing, some or all
of http://www.w3.org/TR/xmldsig-core/ ought to be helpful...

cheers,

Dan

>Greetings,
>  Bram
>
>PS Here is an example of what I currently use:
><!-- XML and DOCTYPE etc. -->
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Danny Ayers | 5 Sep 2005 23:17
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People Finder Interchange Format

PFIF Draft Specification
September 3, 2005
Kieran Lal, Jonathan Plax, Ka-Ping Yee
[[
This document defines the People Finder Interchange Format, which
encompasses both a data model and an XML-based exchange format for
sharing data about people who are missing or displaced by natural or
human-made disasters. The data model is first described in a manner
independent of implementation style (object-oriented, relational, or
XML). Then the PFIF proper is specified by an XML Schema. This
document also provides a recommended schema for handling PFIF data in
a relational database, though such implementation decisions are
ultimately up to application developers.
]]
http://zesty.ca/pfif/pfif-draft.html

Includes examples inserted into Atom & RSS 2.0 feeds. 

--

-- 

http://dannyayers.com

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Graham Klyne | 5 Sep 2005 21:53

Re: FOAF link in request headers

Danny Ayers wrote:
> 1. use "FOAF: http://example.org/foaf.rdf"
> - pursue IETF/IANA registration for it (see RFC 3864 and:
> http://www.iana.org/assignments/message-headers/message-header-index.html

Hmmm... I'm uneasy about being so specific to FOAF.  Why not a pointer 
to any RDF (e.g. CC/PP)?  I'll revisit this below.

A provisional registration should be very easy.  A permanent 
registration would require some consensus.  I think option (4) might be 
easier to swing, but has some added complexity.

> 2. use "X-FOAF: http://example.org/foaf.rdf"
> - I've not found confirmation, but people seem to think it's ok
> without registration

See RFC2616, sects 4.5, 5.3, 6.2, 7.1.   The header registration spec 
leaves the X- convention as a protocol-specific issue, and AFAICT 
there's no such convention defined for HTTP (there is for email).

> 3. use (something like) "Profile: http://example.org/foaf.rdf"
> - it's not tied to a particular data type, might be more appropriate
> and actually stand a chance of successful registration

Hmmm, is this/can this be well enougfh defined to be interoperable?

If we can assume the retrieval mechanism will return MIME type 
information, and allow content negotiation (e.g. as HTTP provides) then 
maybe this is enough, and has the benefit of simplicity and flexibility. 
  But is it safe to assume an HTTP-like retrieval protocol here?
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Peter Mika | 6 Sep 2005 09:51
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RE: People Finder Interchange Format

Hi All,

The relationship between FOAF technology (SW and social networks) and
disaster relief was made very obvious by what happened. 

Certainly in the reports that you could see on Dutch TV it was clear that
people intensively used their social networks to obtain information about
loved ones (who might be staying at a different camp etc.) or activated
their social capital in exchange for small favors (e.g. people asking their
trusted neighbors to return into their apartment to free their pets.)

The semantic web part is also very obvious: matching the descriptions of
those who are lost and those who are sought is clearly a semantic task and
we call it smushing among ourselves :)

BTW, there was also an immediate NSF call for Hurricane research posted to
the social networks list a few days ago (copied below). So if you live in
the US (I assume that is required), I would say: go for it!

Best,

Peter 

P.S. And a shameless plug: check out the Elmo API at openrdf.org for all
your FOAF development needs in Java.

Subject: Immediate call by NSF for SGER Proposals for research in fields of
science, engineering and education.

The National Science Foundation (NSF) is requesting immediate submission of
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Bram Neijt | 6 Sep 2005 20:37
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Re: Metadata in XML

> Depending on exactly what you're doing, some or all
> of http://www.w3.org/TR/xmldsig-core/ ought to be helpful...
> 
> cheers,
> 
> Dan

Thanks!

This was what I was looking for. I won't be able to implement it any
time soon, but if you want to know what I am exactly trying to do you
can visit my homepage: http://www.ai.rug.nl/~bneijt/metalinks

Greetings,
  Bram

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Jo Walsh | 14 Sep 2005 19:14
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RDF web application toolkits

i read with interest http://www.oreillynet.com/pub/wlg/7766
about [[ what if we built an MVC framework, like Rails-Django, using
an Agile Language and the RDF data model and SPARQL query language
instead of the relational algebra and SQL? ]]

i have just been documenting something i made, with a bit of help from
Schuyler, which is quite a lot like that, which is at just a level 
above a rails/django level of abstraction. It is still not *quite* done.
It doesn't have sparql support yet, but is an object frontend to
Redland so it should be easy to add. 

http://map.wirelesslondon.info/docs/nodel-howto.html

It has simple permission system and login/register stuff which is not
documented here.
I would appreciate any feedback! (is Kendall here?) I am aware i am
being very liberal about the contents of namespaces.

-jo

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Danny Ayers | 15 Sep 2005 23:12
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Re: RDF web application toolkits

On 9/14/05, Jo Walsh <jo@...> wrote:

> http://map.wirelesslondon.info/docs/nodel-howto.html

Great to see. Really, really great to see ;-)

Couple of quick questions (I've only skimmed and it'll be a week or
two before I get chance to nodel noodle):

Would I be right in thinking the current setup runs against Python
cgi?...done anything with mod_python? (If not I have a bit of code
that could maybe be tweaked & bolted inbetween [1].)

Any idea how rdfobj compares with sparta [2]?

Cheers,
Danny.

[1] http://pragmatron.org/docs/pymplex.html
[2] http://www.mnot.net/sw/sparta/

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Gmane