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272 lines
7.9 KiB
272 lines
7.9 KiB
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta name="generator" content=
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"HTML Tidy for Linux/x86 (vers 1st August 2004), see www.w3.org" />
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<title>Semantic Web Application Platform</title>
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<meta http-equiv="Content-Type" content=
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"text/html; charset=us-ascii" />
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<link href="/StyleSheets/base.css" rel="stylesheet" type=
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"text/css" />
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</head>
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<body lang="en" xml:lang="en">
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<p><a href="/">W3C</a> | <a href=
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"/2000/01/sw/Overview.html">Semantic Web</a></p><a href=
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"http://www.w3.org/RDF/" title=
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"RDF Resource Description Framework"><img border="0" src=
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"http://www.w3.org/RDF/icons/rdf_w3c_icon.48" alt=
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"RDF Resource Description Framework" align="right" /></a>
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<h1>Semantic Web Application Platform - SWAP</h1>
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<p>or, if you like, <em>Semantic Web Area for Play</em>...
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visiting RDF and all points west. working toward the SWELL
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langauge, MIT-LCS's advanced development prototyping of tools and
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langauges for the Semantic Web.</p>
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<p>This NOT W3C endorsed material, it is related to the Semantic
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Web activity of the W3C.</p>
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<p>Other related material:</p>
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<ul>
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<li><a href="Primer.html">A primer for getting into RDF using
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N3</a></li>
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<li><a href="Examples.html">Examples</a></li>
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<li>
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<a href="">SWAP</a> cwm and other tools; Open Source.
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<ul>
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<li><a href="doc/cwm.html">The <strong>cwm</strong> home
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page</a></li>
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<li><a href="http://infomesh.net/2001/cwm/">Sean Palmer's
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guide to cwm</a></li>
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</ul>
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</li>
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<li>
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<a href="/DesignIssues/Notation3.html">Notation3</a>
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<ul>
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<li><a href=
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"http://www.w3.org/DesignIssues/N3Alternatives.html">Design
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alternatives considerd in the design of Notation3</a></li>
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</ul>
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</li>
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<li><a href=
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"http://www.w3.org/DesignIssues/N3Alternatives.html">Design
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alternatives considerd in the design of Notation3</a></li>
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<li><a href="doc/Motivation.html">Motivations for N3 and
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cwm</a></li>
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</ul>
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<h2>Source</h2>
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<p>This <a href=
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"http://dev.w3.org/cvsweb/2000/10/swap/">stuff</a> is not
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guaranteed but is open source and available from the <a href=
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"http://dev.w3.org/cvsweb/">public w3c CVS repository</a>.</p>
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<h3>Cwm - a general-purpose semantic web data processing
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tool</h3>
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<ul>
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<li><a href="doc/cwm.html">The cwm home page</a></li>
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</ul>
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<p>Check out *.py from the top level of the swap hierarchy to use
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it, check out the whole tree to develop.</p>
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<p>Set up an alias (.bat file, etc) to make the cwm command
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cwm="python /wherever/cwm.py"</p>
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<h3>Other utilities in python</h3>
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<ul>
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<li><a href="pim/qif2n3.py">Convert Quicken(tm) .QIF data into
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RDF</a></li>
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<li><a href="pim/lookout.py">Extract Microsoft(tm) Outlook(tm)
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data into RDF</a> <a>-- lookout.py (tm) ;-)</a></li>
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<li><a href="tab2n3.py">tab2n3.py</a> -- Convert tab separated
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text files into RDF</li>
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<li><a href="dbork/dbview.py">dbview.py</a> -- export an SQL
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database as RDF over HTTP (design note: <a href=
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"/DesignIssues/RDB-RDF.html">Relational Databases on the
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Semantic Web</a>)</li>
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<li><a href="util/make2n3.py">make2n3.py</a> -- convert
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makefile dependencies to RDF</li>
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<li><a href="xml2infoset.py">xml2infoset.py</a> -- convert XML
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infoset/parse structure to RDF (see also: <a href=
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"infoset/xmod67.html">Using RDF to model XML
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structures</a>)</li>
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<li><a href="cant.py">cant.py</a> -- cannonicalize N-Triples
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graphs</li>
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</ul>
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<p>nearby: <a href="/2002/01dc-nj/toICal.py">toICal.py</a> --
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(the start of) a converter from RDF to ICal. (see also: <a href=
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"http://www.sourceforge.net/projects/freeassociation/">libical</a>),
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<a href=
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"http://dev.w3.org/cvsweb/2001/palmagent/vcal2xml.pl?rev=1.4&content-type=text/x-cvsweb-markup">
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vcal2xml.pl</a> (in <a href=
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"http://dev.w3.org/cvsweb/2001/palmagent/">palmagent</a>), which
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actually converts ical to RDF.</p>
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<h2>Ontologies</h2>
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<p>These are lists of RDF terms (properties and classes) which we
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have used for putting together test and demo applications, and
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organizing our dailiy lives. Most are defined in n3, many have
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xml versions. If you don't have it in XML, use cwm to transcode
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it.</p>
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<h3>Cwm built-ins</h3>
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<p>For cwm these are magic - these are properties which cwm can
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infer or which allow cwm to infer things. They are like built-in
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functions in a programming language. Not every N3 processor
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handles the same built-ins.</p>
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<ul>
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<li>Logic - as used by cwm</li>
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<li>String - built in</li>
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<li>Math - builtin</li>
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<li>Crypto - digital sugnature</li>
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<li>OS - Operating system interface; environment, command line
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&c</li>
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</ul>
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<p>See the <a href="doc/cwm.html">cwm</a> page for details.</p>
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<h3>Utility ontologies</h3>
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<p>As we have experimented, we have generated a number of general
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purpose ontologies.</p>
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<p>While in the long term there may be much better standard ones,
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for what its worth</p>
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<p>there is a list a slide in the <a href=
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"talk/Overview.html">talk</a>.</p>
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<h3>Basic RDF ontologies</h3>
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<p>Not here, but things everyone needs</p>
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<ul>
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<li>The RDF schema vocabulary</li>
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<li>The OWL web ontology vocabulary</li>
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</ul>
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<hr />
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<h2 id="Motivation">History: Motivation</h2>
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<p>The requirements of this system are now</p>
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<ul>
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<li>To check the semantic web layer cake is feasable
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<p>To make a rules langauge which is a smooth extension of
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RDF</p>
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<p>To make</p>
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</li>
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</ul>
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<p>These are a few things I put together to</p>
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<ul>
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<li>Resolve the fact that I had no code development
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environment</li>
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<li><a href="#L88">Check out python</a></li>
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<li>Investigate the questions of the real RDF model
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particularly with respect to
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<ul>
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<li>alternative quick scribbling (wiki wiki?) syntax -
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notation3</li>
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<li>managing several bags of RDF data, not covered by the
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RDF spec</li>
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<li>relationships between this and rule languages</li>
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<li>a generic logic framework for implementing various
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systems</li>
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</ul>
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</li>
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<li>Generate some tools for munging RDF</li>
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</ul>
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<h2>Places to talk about this</h2>
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<p>See <a href="doc/cwm.html#disc">cwm discussion</a>.</p>
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<h3>Acknowledgements</h3>
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<p>Contributors of code:</p>
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<ul>
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<li>Tim Berners-Lee</li>
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<li>Dan Connolly</li>
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<li>Sean Palmer</li>
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<li>Mark Nottingham</li>
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</ul>
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<p>and contributions of ideas and all other kinds from those on
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#rdfig. Thanks to all. KUTGW!</p>
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<h3 id="L88">By the way... Python is cool.</h3>
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<p>I had lamented that it ws a long time since I had a practial
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hacking environment, and Dan Connolly suggested <a href=
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"http://www.python.org/">Python</a> as something you could start
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quickly but which would scale to a large system. One day, as I
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was leaving for the airport, I got my laptop back out of my bag,
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and sucked off the web the <a href=
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"http://www.python.org/1.6/">python 1.6 system</a> and the
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<a href="http://www.python.org/doc/current/tut/tut.html">python
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tutorial</a>, and a copy of a small <a href=
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"../n3/notation3.py">notation3 parser</a> Dan had hacked
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together. I was happy to find that Python is a language you can
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get into on one battery! I have been happily hacking ever
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since.</p>
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<p>I remember Guido trying to persuade me to use python as I was
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trying to persuade him to write web software.</p>
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<hr />
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<address>
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<a href="../../../People/Berners-Lee/">Tim BL</a>, with his director hat off<br />
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<small>$Id: Overview.html,v 1.51 2005/02/17 17:43:29 connolly Exp $</small>
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</address>
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<p><a href="Overview.html,tools">About this page</a></p>
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</body>
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</html>
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