OPEN ACCESS
Semantic wikis allow collaboration between users of a community for creating and sharing knowledge. The wiki pages are semantically annotated and tags (keywords) can be freely associated with them. The categories organize links between pages in the wiki and are created by the experts. In this way, data stored in semantic wikis can be extracted and the resulting knowledge pattern can be reused in order to improve the wiki organization. In this paper, we propose a method which allows to extract frequent patterns useful of tags in the wiki for guiding new categories discovery and improving categorization. We use an external ontology of the wiki for guiding the experts to create these new categories in the wiki. Pages annotated by these new categories are categorized. The originality of our approach is to build from the content of wiki an extraction context and to extract knowledge units from this content. This will allow to improve the hierarchy category and improve the semantic research by categories. The experiments on a semantic wiki annotated show the substantial results.
semantic wiki, frequent pattern, ontology, categorization
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