ISIS Katrinebjerg i n t e r a c t i v e s p a c e s . n e t 1 Frank Allan Hansen, [email protected]Integrating the Web and the World: Contextual Trails on the Move Torben B. Pedersen Frank Allan Hansen Niels Olof Bouvin Bent G. Christensen Kaj Grønbæk Jevgenij Gagach Department of Computer Science, University of Aarhus, Denmark Department of Computer Science, Aalborg University, Denmark Euman Ltd., Denmark
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ISIS Katrinebjerg i n t e r a c t i v e s p a c e s. n e t 1 Frank Allan Hansen, [email protected] Integrating the Web and the World: Contextual Trails on.
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• How can Open Hypermedia structures be used to Link objects in physical and digital space?– OH structures are not embedded in the linked resources!– Externally defined, out-of-line links– Write access to the resources is not required– Support multiple sets of structures on the same corpus
“Context is any information that can be used to characterize the situation of an entity. An entity is a person, place, or object that is considered relevant to the interaction between a user and an application, including the user and applications themselves.”
“A system is context-aware if it uses context to provide relevant information and/or services to the user, where relevancy depends on the user’s task.”
• Utilizing the part of the surroundings (the context) which is relevant to the user’s task
• Context-aware application support:– Presentation of information and services– Automatic execution of services– Tagging of context to information to support later retrieval
• Location based browsing and search relative to the users context (time, place, activity,...)– Geo-tagged information– Unstructured Web information (GBS/Google)
• Digital graffiti – Location based
annotations:The user as producer of information (Photo, video, speak, text notes)
– Leaving trails of information ”Social computing”
Digital graffiti: augmenting the environment without spoiling it
• Search for information associated with the user’s context
• Geo Based Search: Web searches are augmented with context information or information derived from sensor data– Searching for shops or restaurants nearby which are
open now– Requires information about the user’s (and shops)
location and the time of day• The benefit of adding criteria based on context
information is of course highly dependent on the search engine used and how the context data can be formulated as an appropriate criteria…
• Creating structure!• Organizing information as you go• Leaving (user created) guided tours through
collections of “points of interest” – No requirement for pre-defined tourist guides
• “Social computing”– Combined with the annotation facilities trails
may serve as personalized impressions of a given area and even allow users to share their impressions through discussions linked to points of interests along the trail.