Wikis lassen sich für vielerlei Zwecke verwenden. In diesem Beitrag werden einige Aspekte der an einem Gymnasium durchgeführten Erprobung eines Wikis auf seine Eignung als Lernumgebung für den Informatikunterricht dargestellt. Der Schwerpunkt liegt dabei auf Fragen der Unterstützung rollenbasierten kollaborativen Lernens und der Darstellung der mit dem System gemachten Erfahrungen. Es zeigt sic...

A couple of semantic wikis have been proposed to serve as collaborative knowledge engineering environments – however, the knowledge of almost all systems is currently based on the expressiveness of OWL (Lite/DL). In this paper we present the concept of a semantic knowledge wiki that extends the capabilities of semantic wikis by strong problem-solving methods. We show how problem-solving knowled...

The motivation of semantic wikis is to make acquisition, maintenance, and mining of formal knowledge simpler, faster, and more flexible. However, most existing semantic wikis have a very technical interface and are restricted to a relatively low level of expressivity. In this paper, we explain how AceWiki uses controlled English — concretely Attempto Controlled English (ACE) — to provide a natu...

Reasoning in wikis has focused so far mostly on expressiveness and tractability and neglected related issues of updates and explanation. In this demo, we show reasoning, explanation, and incremental updates in the KiWi wiki and argue that it is a perfect match for OWL 2 RL reasoning. Explanation nicely complements the “work-in-progress” focus of wikis by explaining how which information was der...

This paper presents a tool for semantic personal knowledge management called Hypertext Knowledge Workbench (HKW), an editor and browser for semantic personal knowledge models. The tool is designed to be used by a single person to manage her personal notes about any topic that seems relevant. Existing wikis and semantic wikis represent content as pages with a title and content. Hypertext-based K...