Semantics in Wiki - Community-Built Databases: Research and Development - page 246

olkel et al. [ 9 ] have provided an extension to MediaWiki which allows
important parts of Wikipedia's knowledge to be machine processable with as little
effort as possible. These authors arrived at the following key elements for annota-
tions:

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l Categories , which classify articles according to their content
l Typed links , which classify links between articles according to their meaning
l Attributes, which specify simple properties related to the content of an article
Categories already exist in Wikipedia, though they are mainly used to assist
browsing. According to these authors, Typed links are obtained from normal links
by slightly extending the way of creating a hyperlink between articles. Attributes
provide source for machine-readable data, which incorporates data values in the
encyclopaedia. Typically, such values are provided in the form of numbers, dates or
coordinates.

10.4.1 Development of Semantic Wiki

The development of Web application models was driven by the advances of Web
technology. Early Web applications only allowed the users to browse Web pages.
Nowadays, users are able to control content publishing with the help of Web 2.0
technologies. Wiki blogs today further provide extensible computing infrastruc-
tures that support scripting and/or customisable plug-in to facilitate collective
Web application development. Recent advances in the Social Semantic Web,
such as SMW, allow users to collaboratively control structured data management.
Figure 10.4 shows the different Web application models (from Bao et al. [ 17 ]).
The early model is the conventional model. In the Conventional Model , the Web
application is composed of three clearly separated major components, namely the
Web browser, the Web server and the backend storage system (e.g. a database or a

Fig. 10.4 A comparison of several Web application models (from [ 17 ])