Help:SMWAddExtensions
| Help sections |
|---|
| Contents · Semantic MediaWiki · Semantic Forms |
| Add Ontology · Semantic links and import/export features · Import external vocabulary |
| Other SemanticMW extensions · Other extensions |
This section gives some guidance on, and provides examples for using other Semantic Mediawiki (Semantic MW) extensions. Basic features of the Semantic MW and the Semantic Forms extension are explained separately (see the box on help sections above). All SemanticMW extensions described here require prior installation of the basic Semantic Mediawiki components.
Contents
Semantic Drilldown extension
For more detailed descriptions of this extension see the Semantic Drilldown website.
Introduction
Semantic Drilldown is very useful for browsing and filtering the semantic data entered into a wiki. As with other SemanticMW features, Semantic Drilldown is closely linked to the category system of a wiki and Semantic Drilldown can only work through a specific category. As an example we explain here the different steps for modifying the Category:Publications to enable specific filter options.
Defining filters
- Create the page Filter:Journal by typing this name into the search box.
- The filter page basically needs only a statement on which property the filter is based in the form "[[Covers property::Property:Publication journal]]". However, you might want to add also some explanationary text.
- Create another filter for the property Publication year.
Adding filter definitions to a category
We now add these 2 filters to the page Category:Publications. For this we need statements like "[[Has filter::Filter:Journal]]".
Using Semantic Drilldown
Got to the "Semantic Drilldown" section of the Special:SpecialPages and select Browse data. In the top right of this page you find a box with the diffrent categories of this wiki, sorted alphabetically. The first category on this list has been selected. Since most categories do not contain any filters, the borwse pages do not look differently from the normal category pages. Select the category Publications. On the top of this page you can now click on different journals and publication years. The category list changes according to your selection. Of course the Drilldown system will become more useful when more data are in the system.
