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Tech Report kmi-04-06 Abstract


Towards Cinematic Hypertext: a Theoretical and Empirical Investigation
Techreport ID: kmi-04-06
Date: 2004
Author(s): Clara Mancini
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Hypertext's non-linearity has critical implications for scholarly discourse and argumentation, where it is commonly considered important to control the reader's exposure to the line of reasoning in order to communicate complex ideas and maximise rhetorical impact. Hypertext's non-linearity has been seen to threaten authors' control over discourse order and the coherence of their argumentative discourse. Existing hypertext paradigms offer different solutions to the problem of preserving user-defined navigation whilst maintaining coherence: page-based hypertext relies on the expressiveness of linear associative writing; semantic hypertext relies on the expressiveness of link taxonomies; spatial hypertext relies on the expressiveness of hypertext's visual features. This research combines elements of these with new theoretical insights, to investigate a fourth paradigm referred to as Cinematic Hypertext. The problem of maintaining coherence is framed as the problem of representing and communicating discourse form in ways inspired by the mechanisms underpinning cinematographic languages for expressing coherently narrative relations. Cinematic hypertext requires the consistent and concurrent use of the hypertext medium's formal features, grounded in structuring principles, in order to allow the emergence of a local language. For scholarly discourse, it is proposed that relational primitives based on Cognitive Coherence Relations (CCR) can be used as a structuring principle to define hypertext links, while the graphic features of the medium can be used to render these relational primitives. Relations between nodes are animated in principled ways as they are navigated, shaping discourse structure. This dissertation articulates the theoretical basis for cinematic hypertext, proposes a prototype visual language to express a sub-set of CCR, provides experimental evidence that the visual results are meaningful, and specifies requirements for a cinematic hypertext environment.
 
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Semantic Web and Knowledge Services
"The Semantic Web is an extension of the current web in which information is given well-defined meaning, better enabling computers and people to work in cooperation" (Berners-Lee et al., 2001).

Our research in the Semantic Web area looks at the potentials of fusing together advances in a range of disciplines, and applying them in a systemic way to simplify the development of intelligent, knowledge-based web services and to facilitate human access and use of knowledge available on the web. For instance, we are exploring ways in which tnatural language interfaces can be used to facilitate access to data distributed over different repositories. We are also developing infrastructures to support rapid development and deployment of semantic web services, which can be used to create web applications on-the-fly. We are also investigating ways in which semantic technology can support learning on the web, through a combination of knowledge representation support, pedagogical theories and intelligent content aggregation mechanisms. Finally, we are also investigating the Semantic Web itself as a domain of analysis and performing large scale empirical studies to uncover data about the concrete epistemologies which can be found on the Semantic Web. This exciting new area of research gives us concrete insights on the different conceptualizations that are present on the Semantic Web by giving us the possibility to discover which are the most common viewpoints, which viewpoints are mutually inconsistent, to what extent different models agree or disagree, etc...

Our aim is to be at the forefront of both theoretical and practical developments on the Semantic Web not only by developing theories and models, but also by building concrete applications, for a variety of domains and user communities, including KMi and the Open University itself.