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Web-based learning environments such as the Go-Lab portal facilitate the structuring and scaffolding of inquiry processes and enable learners to create various types of knowledge artefacts (texts, concept maps, hypotheses). In this context, we have introduced semantic technologies to extract key concepts from heterogeneous learner-generated artefacts. Based on this approach, we propose an algorithm...
Collaboration in temporal and spatially distributed environments has consistently had to deal with the challenge of intense awareness, extensively more than locally concentrated team play. Awareness means being informed, in conjunction with an understanding of activities, states and relationships of each individual within a given group as a whole. In multifarious offices, where social interaction...
The paper describes the design and implementation of a set of visual modeling editors. They aim to provide users with easy to use and customizable but yet semantically powerful tools for collaborative modeling in diverse domains of interest. The tools allow the creation, use and evolution of visual models and their underlying languages. The design, software architecture, technical implementation and...
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