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Halo extension)
Halo extension: Boost the usability of your Semantic MediaWiki installation.
The Halo extension provides an elaborate toolbox to let you gain immediate benefits of semantically enriched (that is annotated) content. It not only improves the usability of standard SMW features remarkably, but also (and first of all) provides exclusive features like the Ontology browser or the Semantic Toolbar.
The intuitive graphical user interfaces of the Halo extension substantially facilitate the authoring, retrieval, navigation and organization of semantic data.
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The features of the Halo extension can be divided into three groups:
- Enhanced wiki browsing - features to ease and speed up navigation and access to articles, as well as semantic data, in the wiki
- Improved knowledge authoring - features to allow easy and expressive adding of semantic data to the wiki
- Simplified knowledge retrieval - features to query semantic data and access information stored in the wiki
Navigation Features
- Get a quick and detailed overview of the Wiki's ontology with the Ontology browser
- Navigate targeted through the concept and property hierarchy
- Have a look at instances and their annotations
- Adapt the Wiki's ontology directly in the graphical user interface
- Proceed lookups of instance and property information
- Use filter and auto-completion functions
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Authoring Features
- Annotate contents semantically in a WYSIWYG-like manner, simply by selecting article elements ("Advanced Annotation Mode")
- Inspect and alter the semantic annotations of a wiki article with the Semantic Toolbar
- Define part-of relations and use templates to simplify annotations
- Create new properties and define their allowed values
- Get suggestions for instances, properties, categories, or templates dynamically while typing through auto-completion
|  The annotation mode allows the convenient adding of semantic annotations |
Retrieval Features
- Benefit from the assigned annotations by effortlessly composing queries with the syntax-free Graphical Query Interface
- Add, delete, or change restrictions in queries and use auto-completion
- Preview the results of your query and optimize it stepwise if needed
- Visualize your results selection using over 40 different output formats such as timelines, galleries, tables, bar and pie charts, maps, BibTeX etc.
|  The query interface allows easy assembling of complex queries |
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Related extensions
Several other extensions were created within Project Halo which enhance SMW and the Halo extension. Some of them can be applied with a plain SMW and do not require an installed Halo extension. This modular approach provides for a flexible architecture allowing to use only the needed features.
Overview of all related extensions
