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We introduce MobiTOP (mobile tagging of objects and people), a map-based application which allows users to contribute and share geo-referenced multimedia annotations via mobile devices. An important feature of MobiTOP is that annotations are hierarchical, allowing annotations to be annotated to an arbitrary depth. MobiTOPpsilas interface was designed using a participatory design methodology to ensure...
Typical tasks of learning groups and knowledge workers include working both with printed and digital documents. We present a pen-based and tangible interaction concept for the linking and tagging of documents in a mixed physical and digital environment. The interaction with printed and electronic documents is unified. We therefore use digital pens, which equally capture physical handwriting on real...
Web research in Mexico has been addressing issues related mainly to search mechanisms, information extraction, and mediating user interaction and group collaboration. In this paper we provide an overview of representative projects in the area and present a sample of recent advances by research groups in Mexican institutions. These include initiatives aimed to exploring extraction techniques that regard...
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