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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>RDF Calendar Workspace</title>
</head>
<body>
<p><a href="../../../">W3C</a> > <a
href="../../../2001/sw/interest/">SemWeb IG</a></p>
<h1>RDF Calendar Workspace</h1>
<div align="center">Contents: <a href="#dev">dev</a> | <a href="#tzd">timezone data</a> | <a href="#mtg">meetings</a> </div>
<div align="center">nearby: <a
href="http://lists.w3.org/Archives/Public/www-rdf-calendar/">www-rdf-calendar</a>
| <a
href="http://esw.w3.org/topic/RdfCalendar">RdfCalendar
Wiki topic</a> | <a href="http://rdfig.xmlhack.com">RDFIG
Scratchpad/weblog</a></div>
<div class="abstract">
<p>This is a workspace for RDF calendaring work, starting
with emphasis on representing iCalendar (<a
href="rfc2445">RFC 2445</a>) in
RDF. The main result so far is:</p>
<ul class="bibliography">
<li>
<cite><a
href="http://www.w3.org/TR/2005/NOTE-rdfcal-20050929/">RDF
Calendar - an application of the Resource Description
Framework to iCalendar Data</a></cite> W3C Interest Group
Note 29 September 2005 by Connolly and Miller
<div class="abstract">
This report discusses an effort to apply the Resource
Description Framework (RDF) to iCalendar data in order to
integrate calendar data with other Semantic Web data such
as social networking data, syndicated content, and
multimedia meta-data. We demonstrate the effectiveness of
a test-driven approach to vocabulary development and we
discuss a number of social as well as technical issues.
</div>
<div>see also: <a href="report1173.html">author's draft</a></div>
</li>
</ul>
<p>The schema and test data live here; we're using the <a
href="http://esw.w3.org/topic/">ESW Wiki</a> for use cases,
meeting summaries, <a name="apps"
href="http://esw.w3.org/topic/CalendarUserAgents">notes on
calendar applications/user-agents</a>, documenting emerging
semantic web patterns and the like.</p>
<p>This workspace stems from a <a
href="http://ilrt.org/discovery/chatlogs/rdfig/2002-10-09.html#T15-28-24">
discussion</a> at the <a
href="../../../2001/sw/Europe/events/200210-cal/">calendaring
workshop in October in Bristol.</a></p>
</div>
<h2><a id="dev" name="dev">Development</a></h2>
<p>While we have started to use the <a
href="http://esw.w3.org/topic/">ESW Wiki</a> for usage
notes and such, the following are still maintained in this workspace:</p>
<ul>
<li>for the original namespace/schema:
<dl>
<dt>a schema</dt>
<dd>we have the <a href="ical">ical schema</a> (in <a
href="ical.rdf">RDF/XML</a>, <a
href="ical.n3">RDF/n3</a>). The RDF/XML version was derived
from the iCalendar spec at one point; I'm not sure what state
it's in now. I'm also not sure what state the RDF/n3 version
is in.</dd>
<dt>conversion tools</dt>
<dd><ul>
<li>
<a href="ical2rdf.pl">ical2rdf.pl</a> maintained here, as well as <a href="http://www.kanzaki.com/courier/ical2rdf">a service by MK based on a slightly modified version</a>
</li>
<li><a
href="http://ilrt.org/discovery/2003/02/cal/">some Java code</a>
(GPL) (<a
href="http://ilrt.org/discovery/2003/02/cal/mimedir-parser/readme.libby">
readme</a>). It uses <a
href="ftp://ftp.metamatrix.se/pub/software/mimedir-parser/">
Daniel Resare's GPLed mime-directory parser</a>.</li>
<li><a href="http://sourceforge.net/projects/icalparser/">icalparser</a> sourceforge project based on code from Event Sherpa</li>
</ul>
</dd>
</dl>
</li>
<li>for the newer timezones-as-datatypes schema:
<dl>
<dt>a schema</dt>
<dd>we have the <a href="icaltzd">ical schema</a> (in <a
href="icaltzd.rdf">RDF/XML</a>).
It's derived from the iCalendar spec in two steps:
<ol>
<li>we run <a
href="http://www.ietf.org/rfc/rfc2445.txt">rfc2445.txt</a>
thru <a href="slurpIcalSpec.py">slurpIcalSpec.py</a> to get <a
href="rfc2445.html">an XHTML version of the iCalendar RFC</a>,
with relevant structures marked up.</li>
<li>we use <a href="webize2445.xsl">webize2445.xsl</a> to transform the XHTML markup to RDF/RDFS/OWL statements.</li>
</ol>
</dd>
<dt>sample data</dt>
<dd>
<em>we have a growing <a href="test/">test data set</a></em>
<p>see also:</p>
<ul>
<li><a
href="http://www.gxsnmp.org/CVS/evolution/libical/test-data/">
ical test data</a> was noted <a
href="http://lists.w3.org/Archives/Public/www-rdf-calendar/2003Jan/0007.html">
9 Jan by Buhler</a></li>
<li><a
href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/reefknot/Net-ICal/test-data/rfc2445">
iCalendar test data</a>, in progress, from reefknot ( <a
href="http://rdfig.xmlhack.com/2003/01/22/2003-01-22.html#1043248806.663740">
22Jan</a>)</li>
</ul>
</dd>
<dt>conversion tools</dt>
<dd><ul>
<li>
<a href="fromIcal.py">fromIcal.py</a> reads .ics files
and generates .rdf. <tt>make from-test</tt> checks that it's
working.
<p><a
href="../../../2000/10/swap/pim/toIcal.py">toIcal.py</a>
goes the other way. It depends on fromIcal.py and on some
python modules from <a
href="../../../2000/10/swap/">swap</a>.
</p>
</li>
</ul>
</dd>
</dl>
</li>
</ul>
<p>At the Bristol workshop, we agreed, roughly...</p>
<ul>
<li>we announce all changes to the schema
www-rdf-calendar</li>
<li>if anyone screams, within a week or so, we'll back out
the changes (for further discussion)</li>
</ul>
<p>If the last modified dates below are more than a few months
old, active developments have likely ceased. <em>If things ever
actually stabilize, we'll change this status message.</em></p>
<p>Some details (such as the address of the workspace) were
refined in <a
href="http://ilrt.org/discovery/chatlogs/rdfig/2002-12-19#T20-34-24">
discussion of 19 December</a>.</p>
<p>We'll integrate contributions made to the <a
href="http://lists.w3.org/Archives/Public/www-rdf-calendar/">www-rdf-calendar</a>
mailing list on a best-effort basis.</p>
<h3><a id="tzd" name="tzd">Time Zone Data</a></h3>
<p>The public domain <a
href="http://www.twinsun.com/tz/tz-link.htm">tz/zoneinfo
database</a> used in open source libc implementations has been
converted to .ics format via an <a
href="http://primates.ximian.com/~damon/icalendar/">Olson ->
VTIMEZONE Converter</a>. We ran those files (taken from <a
href="http://packages.debian.org/unstable/mail/evolution.html">evolution
debian package</a>, Version: 1.2.1-3, which uses
<a
href="http://freshmeat.net/projects/libical/?topic_id=809%2C130">
libical</a>) thru <a href="ical2rdf.pl">ical2rdf.pl</a> and put
the results under the <a href="tzd/">tzd/</a> directory. For
example, <a href="tzd/America/Chicago">America/Chicago</a>. We
give the timezone component a name distinct from the RDF document;
e.g. <tt>http://www.w3.org/2002/12/cal/tzd/America/Chicago#tz</tt></p>
<h2><a id="mtg" name="mtg">Meetings</a></h2>
<p>We meet occasionally in the <a
href="irc://irc.freenode.net:6667/rdfig">#rdfig</a> IRC channel on
<a href="http://www.freenode.net/">freenode</a> (formerly
OpenProjects). Meetings are announced to www-rdf-calendar (<a
href="http://lists.w3.org/Archives/Public/www-rdf-calendar/">archives</a>);
the <a href="http://ilrt.org/discovery/chatlogs/rdfig/">IRC
logs</a> and <a href="http://rdfig.xmlhack.com/">weblogs</a>
generally serve as meeting records.</p>
<ul>
<li>9 Oct 2002 <a
href="../../../2001/sw/Europe/events/200210-cal/">workshop in
Bristol</a>: <a
href="http://www.w3.org/2001/sw/Europe/reports/dev_workshop_report_2/">
workshop report</a>, <a
href="http://rdfig.xmlhack.com/2002/10/09/2002-10-09.html">chump/weblog</a>,
<a
href="http://ilrt.org/discovery/chatlogs/rdfig/2002-10-09.html#T15-28-24">
chat log</a></li>
<li>19 Dec 2002 chat: <a
href="http://ilrt.org/discovery/chatlogs/rdfig/2002-12-19.html#T20-05-31">
IRC logs</a></li>
<li>8 Jan chat: <a
href="http://rdfig.xmlhack.com/2003/01/08/2003-01-08.html">chump/weblog</a>,
<a
href="http://ilrt.org/discovery/chatlogs/rdfig/2003-01-08.html#T18-01-33">
logs</a></li>
<li>15 Jan chat: <a
href="http://rdfig.xmlhack.com/2003/01/15/2003-01-15.html">chump/weblog</a>,
<a
href="http://ilrt.org/discovery/chatlogs/rdfig/2003-01-15.html#T17-54-00">
logs</a>, <a
href="http://rdfig.xmlhack.com/2003/01/15/2003-01-15.html#1042653240.393420">
participants</a></li>
<li>22 Jan chat: <a
href="http://rdfig.xmlhack.com/2003/01/22/2003-01-22.html">weblog</a>,
<a
href="http://ilrt.org/discovery/chatlogs/rdfig/2003-01-22.html#T17-01-55">
logs</a></li>
<li>5 Feb chat: <a
href="http://ilrt.org/discovery/chatlogs/rdfig/2003-02-05#T16-58-23">
logs</a></li>
<li>12 Feb chat:
<a href="http://lists.w3.org/Archives/Public/www-rdf-calendar/2003Feb/0007.html">
agenda</a>, <a
href="http://ilrt.org/discovery/chatlogs/rdfig/2003-02-12.html">
logs</a>, <a
href="http://rdfig.xmlhack.com/2003/02/12/2003-02-12.html">weblog</a>,
</li>
<li>26 Feb chat:
<a href="http://lists.w3.org/Archives/Public/www-rdf-calendar/2003Feb/0014.html">summary</a>,
<a href="http://ilrt.org/discovery/chatlogs/rdfig/2003-02-26.html#T17-00-40">logs</a>,
<a href="http://rdfig.xmlhack.com/2003/02/26/2003-02-26.html">weblog</a>
</li>
<li>... meetings since March 2003 are indexed in the <a
href="http://esw.w3.org/topic/RdfCalendarMeetings">RdfCalendarMeetings
Wiki topic</a>.</li>
</ul>
<p>Many of the meetings are described in RDF
calendar entries in the <a href="test/">test data</a>.</p>
<p>The <a href="http://www.timeanddate.com/">time and date</a>
web site is handy for scheduling meetings across timezones.</p>
<h2>Earlier Work etc.</h2>
<ul>
<li><a
href="http://lists.w3.org/Archives/Public/www-rdf-calendar/2002Jul/0000.html">
a syntactic approach to RDF/ical interchange</a> Jul
2002</li>
<li><a
href="http://lists.w3.org/Archives/Public/www-rdf-calendar/2002Jul/0001.html">
Greg on openoffice groupware</a> Jul 2002</li>
<li><a
href="http://www.tondering.dk/claus/cal/calendar24.html">Frequently
Asked Questions about Calendars</a> Version 2.4 Claus
Tøndering 28 October 2001</li>
</ul>
<hr />
<address>
<a href="../../../People/Connolly/">Dan Connolly</a> and <a
href="http://ilrt.org/people/cmlm/">Libby Miller</a> <tt><a
href="mailto:libby.miller@bristol.ac.uk">libby.miller@bristol.ac.uk</a></tt><br />
$Id: HEADER.html,v 1.43 2006/10/09 13:45:44 connolly Exp $
</address>
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