--- a/rdf-schema/index.html Wed Nov 27 16:34:17 2013 +0000
+++ b/rdf-schema/index.html Thu Nov 28 00:46:48 2013 +0100
@@ -2,7 +2,7 @@
<html lang="en">
<head>
<meta charset="utf-8">
- <title>RDF 1.1 Vocabulary Description Language: RDF Schema</title>
+ <title>RDF Schema 1.1</title>
<script src="../local-biblio.js" class="remove"></script>
<script src="https://www.w3.org/Tools/respec/respec-w3c-common" class="remove"></script>
<script class='remove'>
@@ -110,10 +110,10 @@
<section id="abstract">
- <p>The Resource Description Framework (RDF) is a general-purpose language for
-representing information in the Web. This specification describes how to use
-RDF to describe RDF vocabularies. This specification defines a vocabulary for
-this purpose and defines other built-in RDF vocabulary.</p>
+ <p>>The Resource Description Framework (RDF) is a language for
+ representing information about resources in the World Wide
+ Web. RDF Schema provides a data-mdelling vocabulary for RDF data. RDF
+ Schema is an extesnion of the basic RDF vocabulary. </p>
</section>
@@ -122,8 +122,9 @@
This document is an edited version of the 2004 RDF Schema
Recommendation. The purpose of this revision is to
make this document available as part of the RDF 1.1 document
- set. Changes are limited to revised references and terminology
- updates. The technical content of the document is unchanged. Detaos of the chnages
+ set. Changes are limited to revised references, terminology
+ updates, and adaptations to the introduction. The technical content
+ of the document is unchanged. Details of the chnages
are listed in the <a href="#PER-changes">Changes</a> section.
</section>
@@ -135,8 +136,8 @@
<p>The Resource Description Framework (RDF) is a general-purpose language for
representing information in the Web.</p>
-<p>This specification introduces RDF's vocabulary description language, RDF
-Schema. It is complemented by several companion documents which
+<p>RDF Schema provides a data-mdelling vocabulary for RDF data.
+It is complemented by several companion documents which
describe the basic concepts and abstract stntax of RDF
[[!RDF11-CONCEPTS]], the formal semantics of RDF [[!RDF11-MT]], and
various concrete syntaxes for RDF, such as Turtle [[!TURTLE]],
@@ -144,14 +145,15 @@
The RDF Primer [[RDF11-PRIMER]] provides an informal introduction and
examples of the use of the concepts specified in this document.</p>
-<p>This document is intended to provide a clear specification of the RDF
-vocabulary description language to those who find the formal semantics
+<p>This document is intended to provide a clear specification of RDF
+Schema to those who find the formal semantics
specification [[RDF11-MT]]
daunting. Thus, this document duplicates material also specified in the RDF
Semantics specification . Where there is disagreement between this document
and the RDF Semantics specification, the RDF Semantics specification should
be taken to be correct.</p>
+<!--
<p>RDF properties may be thought of as attributes of resources and in
this sense correspond to traditional attribute-value pairs. RDF
properties also represent relationships between resources.</p>
@@ -165,29 +167,43 @@
<p>This document does not specify a vocabulary of descriptive properties such
as "author". Instead it specifies mechanisms that may be used to name and
describe properties and the classes of resource they describe.</p>
+-->
<p>
-RDF's vocabulary description language, RDF Schema, is a
-<a href="http://www.w3.org/TR/rdf11-mt/#semantic-extensions-and-entailment-regimes">semantic
+RDF Schema is a
+<a
+href="http://www.w3.org/TR/rdf11-mt/#semantic-extensions-and-entailment-regimes">semantic
extension</a> of RDF. It provides
mechanisms for describing groups of related resources and the
-relationships between these resources. RDF Schema vocabulary
-descriptions are written in RDF using the terms described in this document.
-These resources are used to determine characteristics of other resources,
+relationships between these resources. RDF Schema is written in RDF
+using the terms described in this document.These resources are used to
+determine characteristics of other resources,
such as the <a href="#ch_domain">domains</a> and
<a href="#ch_range">ranges</a> of properties.
</p>
-<p>The RDF vocabulary description language class and property system is similar to the type systems of object-oriented programming languages such as Java. RDF differs from many such systems in that instead of defining a class in terms of the properties its instances may have, the RDF vocabulary description language describes properties in terms of the classes of resource to which they apply. This is the role of the <a href="#ch_domain">domain</a> and <a href="#ch_range">range</a> mechanisms described in this specification. For example, we could define the <code>eg:author</code>
+<p>The RDF Schema class and property system is similar to the type
+systems of object-oriented programming languages such as Java. RDF
+Schema differs from many such systems in that instead of defining a class in
+terms of the properties its instances may have, RDF Schema
+describes properties in terms of the classes of
+resource to which they apply. This is the role of the <a
+href="#ch_domain">domain</a> and <a href="#ch_range">range</a>
+mechanisms described in this specification. For example, we could
+define the <code>eg:author</code>
property to have a domain of <code>eg:Document</code> and a range of
<code>eg:Person</code>, whereas a classical object oriented system might
typically define a class <code>eg:Book</code> with an attribute called
-<code>eg:author</code> of type <code>eg:Person</code>. Using the RDF approach, it is easy for others to subsequently define additional properties with a domain of eg:<code>Document</code> or a range of <code>eg:Person</code>.
+<code>eg:author</code> of type <code>eg:Person</code>. Using the RDF
+approach, it is easy for others to subsequently define additional
+properties with a domain of eg:<code>Document</code> or a range of
+<code>eg:Person</code>.
This can be done without the need to re-define the original description of
these classes. One benefit of the RDF property-centric approach is that it
allows anyone to extend the description of existing resources, one of the
-architectural principles of the Web [[BERNERS-LEE98]].</p>
+architectural principles of the Web [[BERNERS-LEE98]].</p>
+<!--
<p>This specification does not attempt to enumerate all the possible forms of
vocabulary description that are useful for representing the meaning of RDF
classes and properties. Instead, the RDF vocabulary description strategy is
@@ -200,10 +216,11 @@
applications using the RDF vocabulary description language facilities,
while exploring richer vocabulary description languages that share this
general approach.</p>
+-->
<p>The language defined in this specification consists of a collection
-of RDF resources that can be used to describe properties of other RDF
-resources (including properties) in application-specific RDF
+of RDF resources that can be used to describe other RDF
+resources in application-specific RDF
vocabularies. The core vocabulary is defined in a namespace informally
called <code>rdfs</code> here. That namespace is identified by the IRI</p>
@@ -233,8 +250,8 @@
<p>Resources may be divided into groups called classes. The members of a
class are known as <em>instances</em> of the class. Classes are themselves
resources. They are often identified by <a
-href="http://www.w3.org/TR/rdf11-concepts/#section-IRIs">RDF
-IRIs</a> and may be described using RDF properties. The <code><a
+href="http://www.w3.org/TR/rdf11-concepts/#section-IRIs">IRIs</a> and
+may be described using RDF properties. The <code><a
href="#ch_type">rdf:type</a></code> property may be used to state that a
resource is an instance of a class.</p>
@@ -556,7 +573,7 @@
</section>
<section class="informative" id="ch_domainrange">
-<h2>Using the Domain and Range Vocabulary</h2>
+<h2>Using the Domain and Range vocabulary</h2>
<p>This specification introduces an RDF vocabulary for describing the
meaningful use of properties and classes in RDF data. For example, an RDF
@@ -564,7 +581,7 @@
appropriate for some property, or on the classes to which it makes sense to
ascribe such properties.</p>
-<p>The RDF Vocabulary Description language provides a mechanism for describing this information, but does not say whether or how an application should use it. For example, while an RDF vocabulary can assert that an <code>author</code> property is used to
+<p>RDF Schema provides a mechanism for describing this information, but does not say whether or how an application should use it. For example, while an RDF vocabulary can assert that an <code>author</code> property is used to
indicate resources that are instances of the class <code>Person</code>, it
does not say whether or how an application should act in processing that
range information. Different applications will use this information in
@@ -1038,7 +1055,8 @@
<h2>RDF Schema summary</h2>
<p>This table presents an overview of the vocabulary of RDF, drawing together
-vocabulary originally defined in the RDF Model and Syntax specification with
+vocabulary originally defined in the RDF Model and Syntax
+specification [[RDFMS]] with
classes and properties that originate with RDF Schema.</p>
<section id="ch_sumclasses">
@@ -1296,6 +1314,12 @@
irrelevant and confusing now. </li>
<li>Update of affiliation of the editors. </li>
<li>Added RDF WG to the Acknowledgements section.</li>
+ <li>Renamed the document from "RDF Vocabulary Description Language
+ 1.0: RDF Schema" to "RDF Schema 1.1", as the term Vocabulary
+ Description Language has led to confusion.</li>
+ <li>Four paragraphs of the Introduction were left out. These
+ paragraphs described the things that RDF Schema does not do and are
+ now much less relevant than in 2004. </li>
</ul>
</section>
@@ -1350,11 +1374,15 @@
<h2>RDF Schema as RDF/XML</h2>
+<p class="issue">
+Update of the RDFS namespace document required!?
+</p>
+
<p>
An RDFS description of the <a href="http://www.w3.org/TR/rdf11-mt/#rdf-interpretations">RDF vocabulary</a>
and <a href="http://www.w3.org/TR/rdf11-mt/#rdfs-interpretations">RDFS vocabulary</a> is given here in RDF/XML syntax.
It includes statements describing RDF resources originally introduced by
-the 1999 RDF Model and Syntax specification, as well as definitions for
+the 1999 RDF Model and Syntax specification [[RDFMS]], as well as definitions for
resources introduced in the RDF Schema vocabulary.</p>
<p>