Wikispooks:Semantic Mediawiki

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Semantic Mediawiki (SMW) extends the basic Mediawiki software by providing semantic definition and querying capabilities. This offers two main benefits to the site - (i) a richer set of ways to organise and use the information, (ii) the possibility to define site feeds to export the data in a predictable format, for others to build upon.

Using the SMW Extension

SMW download page

Thankfully, using the SMW extension (like using Mediawiki) does not require understanding how it works. Behind the scenes, SMW is doing a lot of work organising and cross-referencing pages, but all you really need to know as an editor is the magic word {{SMWDocs}}, which should be placed just above the "references" section. This calls Template:SMWDocs, which searches the site and automatically prepares a set of tables of any relevant documents and pages.

Understanding SMW

Semantic Mediawiki may seem to present quite a steep learning curve for non-computer scientists, as the idea of 'semantic data' may not be intuitive. Robin has volunteered to try to answer any and all SMW queries and to give to beginners help where needed. If you want to get to grips with the syntax, there is a lot of help online about this, and a useful guide to the syntax - which also gives an idea of the range of SMW - is the quick reference guide, available here. Note that you don't actually need to understand any syntax to get started - if you can fill in a form, then you can fill in semantic data!

Use on Wikispooks

Since November 2013, Wikispooks has made use of SMW and associated extensions (Semantic Bundle). The approach is to:

  1. Define a core set of semantic objects for structuring the data, with their own sets of properties and interrelationships
  2. Creating a set of semantic templates to present these objects and their interrelationships
  3. Creating a set of semantic forms to present these objects and their interrelationships
  4. Processing the existing content to fit it into these structures
  5. Allowing for seamless creation of these structures on new pages by non-SMW aware users (i.e. through semantic forms)

Semantic Objects

Full article: WikiSpooks:Semantic Objects

Wikispooks has been using a core set of semantic objects for a couple of years with only very minor changes, so they can be considered stable. By structuring the WikiSpooks data, they facilitate interoperation with other projects, as well as coming with a set of forms, templates and properties to interrelate them.

Semantic Properties

Full article: WikiSpooks:Semantic Properties

A property is the basic type of semantic data. Wikispooks currently has 173 properties in use, each of which is documented using Template:Property.

Semantic Templates

Full article: WikiSpooks:Semantic Templates

If you can code ordinary Templates, then you should find it no trouble to code Semantic Templates. All the structure and syntax from ordinary Mediawiki applies, as does the template standardisation policy. In addition there are a couple of parser functions to provide access to the semantic properties.

Semantic Forms

Full article: WikiSpooks:Semantic Forms

A form is just what it sounds like - a set of boxes and checkboxes to be filled in. The 'semantic' aspect is that each of these fields is tied to particular parameters in a template. Wikispooks currently has only a few semantic forms in use, because the first priority is defining the objects and templates.

Best Practice

Full article: Wikispooks:SMW Best Practice

Policy and practices in this area are currently fluid as Wikispooks editors are still learning how to get the best out of the software, and simultaneously developing a framework for its use on the site. Some best practices are however emerging, such as the use of templates for all semantic markup.

Integrating with Mediawiki

Mediawiki's main organisational tools for arranging pages are the namespace and the category. Manually assigned categories are still used for templates, but are not recommended for ordinary pages, since SMW is easier to maintain and provides a superior user experience. There is a possibility of greatly expanding the use of namespaces to reflect the structure of objects defined (i.e. having separate namespaces for Person:, Event:, Book:, Nation: etc. Input is welcome about this on this talk page.

Known Issues

Full article: Wikispooks:SMW Known Issues

Semantic Mediawiki is undergoing active development and as such, not without problems. If important, these will likely be resolved in time by the software's developers. This page is for reporting and discussion of any such issues.

See Also

Wikispooks logo.png Envelopeopenindigo.png Help.png SMW.png
Policy.png Tools2.png Wikispooks to do.png

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