You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@stanbol.apache.org by bu...@apache.org on 2011/11/08 12:17:26 UTC
svn commit: r798284 - /websites/staging/stanbol/trunk/content/stanbol/docs/trunk/reasoners.html

Author: buildbot
Date: Tue Nov  8 11:17:25 2011
New Revision: 798284

Log:
Staging update by buildbot

Modified:
    websites/staging/stanbol/trunk/content/stanbol/docs/trunk/reasoners.html

Modified: websites/staging/stanbol/trunk/content/stanbol/docs/trunk/reasoners.html
==============================================================================
--- websites/staging/stanbol/trunk/content/stanbol/docs/trunk/reasoners.html (original)
+++ websites/staging/stanbol/trunk/content/stanbol/docs/trunk/reasoners.html Tue Nov  8 11:17:25 2011
@@ -48,7 +48,7 @@
     <h1 class="title">Reasoners</h1>
     <p>The Stanbol Reasoners component provides a set of services that take advantage of automatic inference engines.</p>
 <p>The module implements a common api for reasoning services, providing the possibility to plug different reasoners and configurations in parallel.</p>
-<p>Actually the module includes OWLApi and Jena based abstract services, with concrete implementations for Jena RDFS, OWL, OWLMini and HermiT reasoning service.</p>
+<p>Actually the module includes <a href="http://owlapi.sourceforge.net/" target="_blank">OWLApi</a> and <a href="http://jena.sourceforge.net/" target="_blank">Jena</a> based abstract services, with concrete implementations for Jena RDFS, OWL, OWLMini and HermiT reasoning service.</p>
 <p>The Reasoners module expose a REST endpoint at the following location:</p>
 <div class="codehilite"><pre><span class="n">http:</span><span class="sr">//</span><span class="n">localhost:8080</span><span class="o">/</span><span class="n">reasoners</span>
 </pre></div>
@@ -56,15 +56,15 @@
 
 <p>with the following preloaded services:</p>
 <ul>
-<li>/rdfs, which is based on Jena RDFS reasoner and supports almost all of the RDFS entailments.</li>
-<li>/owl, a Jena reasoner configured to support OWL (with some limitations)</li>
-<li>/owlmini, another Jena configuration that partially supports OWL</li>
+<li><tt>/rdfs</tt>, which is based on Jena RDFS reasoner and supports almost all of the RDFS <a href="#ref1">[1]</a> entailments.</li>
+<li><tt>/owl</tt>, a Jena reasoner configured to support OWL <a href="#ref2">[2]</a> (with some limitations, <a href="#ref4">[4]</a>)</li>
+<li><tt>/owlmini</tt>, another Jena configuration that partially supports OWL (see <a href="#ref5">[5]</a>)</li>
 </ul>
-<p>In addition, it is also available a service which uses the HermiT reasoner to exploit the full OWL2 specification.</p>
+<p>In addition, it is also available a service which uses the HermiT <a href="#ref6">[6]</a> reasoner to exploit the full OWL 2 <a href="#ref3">[3]</a> specification.</p>
 <p>Each reasoner can be accessed with one of three tasks:</p>
 <ul>
-<li>check: to perform a consistency check. This service returns HTTP Status 200 if data is consistent, 204 otherwise (at the current state of implementation the service does not include an explanation about why the input is inconsistent. This feature is in our ï¿½todoï¿½ list, by the way)</li>
-<li>classify: to materialize all inferred rdf:type statements.</li>
+<li>check: to perform a consistency check. This service returns HTTP Status <tt>200</tt> if data is consistent, <tt>204</tt> otherwise (at the current state of implementation the service does not include an explanation about why the input is inconsistent. This feature is in our todo list, by the way)</li>
+<li>classify: to materialize all inferred <tt>rdf:type</tt> statements.</li>
 <li>enrich: to materialize all inferred statements.</li>
 </ul>
 <p>For example:</p>
@@ -208,7 +208,7 @@ The <tt>/owlmini</tt> implements the OWL
 &lt;/owl:Class&gt;
 </pre>
 <a href="https://raw.github.com/enridaga/reasoners.examples/master/enridaga.reasoners.examples/owl/some-values-from.xml" target="_blank">download it</a></p>
-<p>We expect an OWL reasoner to state that John is an <tt>Employee</tt>. This example does not work with <tt>/rdfs</tt> (it ignores the OWL semantics), and does not work with <tt>/owlmini</tt>, because the Jena OWL(mini) reasoner omits the forward entailments for <tt>owl:someValuesFrom restrictions</tt> (see [<a href="#ref4">4</a>]). It works correctly if we use the service <tt>/owl</tt>.</p>
+<p>We expect an OWL reasoner to state that John is an <tt>Employee</tt>. This example does not work with <tt>/rdfs</tt> (it ignores the OWL semantics), and does not work with <tt>/owlmini</tt>, because the Jena OWL(mini) reasoner omits the forward entailments for <tt>owl:someValuesFrom restrictions</tt> (see <a href="#ref4">[4]</a>). It works correctly if we use the service <tt>/owl</tt>.</p>
 <p>The <tt>/owl</tt> service support the most of the semantic of OWL. The HermiT reasoner is based on <a href="http://owlapi.sourceforge.net/">OWLApi</a> and is an example of a DL reasoner. It fully covers OWL and OWL2, which introduces lot of interesting features. Here is an example:
 <pre style="overflow: auto">
 &lt;!-- any Employee must have some features: firstname, familyname, email 
@@ -287,10 +287,16 @@ The <tt>/owlmini</tt> implements the OWL
 <p>The above differences depend on the semantic supported by the specific reasoner and from the implementation, which limit the power of the system in favour of a better efficiency (is the case of the <tt>/owlmini</tt> implementation of Jena, more efficient then the respective <tt>/owl</tt>). If you need to work with RDFS semantic, and don't need OWL for your inferences, just use the RDFS one.</p>
 <h2 id="build_and_install">Build and install</h2>
 <p>Run Stanbol, for example:</p>
-<p>% java -jar -Xmx1g org.apache.stanbol.launchers.full-0.9.0-incubating-SNAPSHOT.jar</p>
+<div class="codehilite"><pre><span class="nv">$</span> <span class="nv">java</span> <span class="o">-</span><span class="n">jar</span> <span class="o">-</span><span class="n">Xmx1g</span> <span class="n">org</span><span class="o">.</span><span class="n">apache</span><span class="o">.</span><span class="n">stanbol</span><span class="o">.</span><span class="n">launchers</span><span class="o">.</span><span class="n">full</span><span class="o">-</span><span class="mf">0.9.0</span><span class="o">-</span><span class="n">incubating</span><span class="o">-</span><span class="n">SNAPSHOT</span><span class="o">.</span><span class="n">jar</span>
+</pre></div>
+
+
 <p>You must have the Ontonet and Rules modules already installed (they are if you have followed the above example).
-Move to the /reasoners directory, then run</p>
-<p>% mvn install -PinstallBundle -Dsling.url=<the path to your running Felix administration console></p>
+Move to the <tt>/reasoners</tt> directory, then run</p>
+<div class="codehilite"><pre><span class="nv">$</span> <span class="nv">mvn</span> <span class="n">install</span> <span class="o">-</span><span class="n">PinstallBundle</span> <span class="o">-</span><span class="n">Dsling</span><span class="o">.</span><span class="n">url</span><span class="o">=&amp;</span><span class="ow">lt</span><span class="p">;</span><span class="n">the</span> <span class="n">path</span> <span class="n">to</span> <span class="n">your</span> <span class="n">running</span> <span class="n">Felix</span> <span class="n">administration</span> <span class="n">console</span><span class="o">&amp;</span><span class="ow">gt</span><span class="p">;</span>
+</pre></div>
+
+
 <p>for example</p>
 <p>% mvn install -PinstallBundle http://localhost:8080/system/console</p>
 <h3 id="add_the_hermit_reasoner">Add the HermiT reasoner</h3>
@@ -301,6 +307,15 @@ Move to the /reasoners directory, then r
 </pre></div>
 
 
+<h2 id="references">References:</h2>
+<ul>
+<li>[1] <a name="ref1" href="http://www.w3.org/TR/rdf-schema/" target="_blank">RDFS</a></li></li>
+<li>[2] <a name="ref2" href="http://www.w3.org/TR/owl-features/" target="_blank">OWL</a></li></li>
+<li>[3] <a name="ref3" href="http://www.w3.org/TR/owl2-overview/" target="_blank">OWL 2</a></li></li>
+<li>[4] <a name="ref4" href="http://jena.sourceforge.net/inference/" target="_blank">Jena inference support</a></li></li>
+<li>[5] <a name="ref5" href="http://jena.sourceforge.net/inference/#OWLnotes" target="_blank">Jena OWL notes</a></li></li>
+<li>[6] <a name="ref6" href="http://hermit-reasoner.com/" target="_blank">HermiT</a></li>
+</ul>
 <hr />
 <p><em><a href="index.html">Back to index</a></em></p>
   </div>