W3C home > Mailing lists > Public > semantic-web@w3.org > February 2007

Re: RFC on 'Semantic Web Locationary'

From: Joshua Shinavier <parcour@gmail.com>
Date: Tue, 6 Feb 2007 17:12:46 -0800
Message-ID: <151f299b0702061712g974e34cqaae04a52bfe62483@mail.gmail.com>
To: Pipian <pipian@pipian.com>, semantic-web@w3.org

Hi Ian,

IMH, newbie O, this is good and useful stuff.  I really appreciate the
human-friendly URIs.  You asked for feedback, so here are some issues
I ran into:

1) The web service response does not have a URI (e.g. the
CC:SuccessfulReply in http://www.pipian.com/rdf/places/country/Asia),
so it's not straightforward to find statements about it.

  <CC:SuccessfulReply>
    <CC:inReplyTo>
      <CC:Request>
        <dc:subject>
          <wail:Place>
            <wail:name>Asia</wail:name>
            <dc:type>continent</dc:type>
          </wail:Place>
        </dc:subject>
      </CC:Request>
    </CC:inReplyTo>
    <rdfs:seeAlso rdf:resource="#Asia" />
  </CC:SuccessfulReply>

2) When I dereference a continent, region or planet URI in one of the
pipian namespaces, I get a number of statements about that URI, and my
(forward-traversing) app is happy.  However, when I dereference a
country or subdiv (for instance,
<http://www.pipian.com/rdf/places/country/AZ#AZ>) I get statements
about a different URI with an owl:sameAs edge to the original URI:

    <urn:iso:3166-1:AZ> owl:sameAs
<http://www.pipian.com/rdf/places/country/AZ#AZ>
    <http://www.pipian.com/rdf/places/country/AZ#AZ> rdf:type rdfs:Resource

The point is that most of the information I get back is about
<urn:iso:3166-1:AZ> instead of the handy HTTP URI.  Why not turn the
owl:sameAs around and make statements about
<http://www.pipian.com/rdf/places/country/AZ#AZ> instead?

3) The graphs you return contain a lot of what seem to me to be
unnecessary, redundant statements (for instance, statements about Asia
in the graph about Azerbaijan).  If I want information about Asia, I
can just dereference Asia's URI.

4) I noticed a circular owl:sameAs statement in each country and
region graph, dunno about other types.  I also don't know whether it
matters.

    <http://www.pipian.com/rdf/places/continent/Asia#Asia> owl:sameAs
<http://www.pipian.com/rdf/places/continent/Asia#Asia>

5) The namespace declaration for the SWEET Space ontology is missing a
'#', which breaks a few URIs:

         xmlns:sweet = "http://sweet.jpl.nasa.gov/ontology/space.owl"


Josh
Received on Wednesday, 7 February 2007 02:27:38 UTC

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