W3C home > Mailing lists > Public > www-ws-arch@w3.org > June 2002

[me@aaronsw.com: Stock Quotes in RDF]

From: Mark Baker <distobj@acm.org>
Date: Thu, 13 Jun 2002 05:14:48 -0400
To: www-ws-arch@w3.org
Cc: me@aaronsw.com
Message-ID: <20020613051448.B10968@www.markbaker.ca>

FYI, this is how one might do stock quotes in RDF/RDFS.

If you look at the definitions behind the quotes, ala;


you might notice that there's not a lot of information there that
isn't available in an XML Schema definition (except the use of
rdf:type, rdfs:label, rdfs:Class).  The big win of RDF is when
you compare stock quotes to other things, permitting a no-new-code
means of doing things like integrating stock quotes into RSS and
building an RSS feed out of it (note to Aaron; how about doing
that?).  Using just XML schema doesn't give you this capability,
which is the basis of my concern that we be too focused on it; if
you restrict yourself to XML schema, you are explicitly making a
choice not to catpure lots of very useful information.


----- Forwarded message from Aaron Swartz <me@aaronsw.com> -----

Date: Thu, 6 Jun 2002 17:02:44 -0500
Mime-Version: 1.0 (Apple Message framework v482)
Content-Type: text/plain; charset=US-ASCII; format=flowed
From: Aaron Swartz <me@aaronsw.com>
To: www-rdf-interest@w3.org
Content-Transfer-Encoding: 7bit
Message-Id: <213D9690-7999-11D6-B979-0003936780B2@aaronsw.com>
Subject: Stock Quotes in RDF
X-Mailing-List: <www-rdf-interest@w3.org> archive/latest/6432
Sender: www-rdf-interest-request@w3.org
List-Id: <www-rdf-interest.w3.org>
List-Help: <http://www.w3.org/Mail/>
List-Unsubscribe: <mailto:www-rdf-interest-request@w3.org?subject=unsubscribe>

Since everyone uses the stock quote example for the canonical SOAP app, 
I figured RDF needed one too. I thought the DAML HTML scraper[1] would 
do the job but it only handles NYSE stocks for some reason. So I wrote 
my own in Python. Pick a stock, any stock:

(replace "AAPL" with the stock you want)

Schema: http://notabug.com/2002/stock?t=
Source: http://notabug.com/2002/stock.py

It's a bit rushed and hacked up. Ideally it'd support Accept: headers 
and give back HTML, RDF/XML , etc. Comments appreciated.

[1] http://www.daml.org/2001/10/html/

Aaron Swartz [http://www.aaronsw.com]

----- End forwarded message -----

Mark Baker, CTO, Idokorro Mobile (formerly Planetfred)
Ottawa, Ontario, CANADA.               distobj@acm.org
http://www.markbaker.ca        http://www.idokorro.com
Received on Thursday, 13 June 2002 05:05:02 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 23:05:34 UTC