Heiko Haller

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DeepaMehta is an open source semantic desktop application based on the topic maps standard. It's conceptualisation and especially the innovative graph-based user interface have been guided by findings in cognitive psychology in order to provide a cognitively adequate working environment for knowledge workers of all kind. DeepaMehta aims to evolve nowadays'(More)
We present iMapping, a zooming based approach for visually organizing information objects. It was developed on top of semantic desktop technologies and especially targets the support of personal knowledge management. iMapping has been designed to combine the advantages of spatial hypertext and other proven visual mapping approaches like mind-mapping and(More)
QuiKey is an interaction approach that offers interactive fine grained access to structured information sources in a light weight user interface. It is designed to be highly interaction efficient for searching, browsing and authoring semantic knowledge bases as well as incremen-tally constructing complex queries. Empirical evaluation using a comparative(More)
iMapping is a visual technique for structuring information objects. It is based on research in the fields of visual mapping techniques , Information Visualisation and cognitive psychology. iMapping uses a Zooming User Interface to facilitate navigation and to help users maintain an overview in the knowledge space. An iMap is comparable to a large whiteboard(More)
QuiKey is a kind of smart semantic command-line that fo-cuses on highest interaction-efficiency to browse, query and author semantic knowledge bases in a step-by-step manner. It combines ideas of simple interaction techniques like auto-completion, command interpreters and faceted browsing and integrates them to a new interaction concept. QuiKey forms a(More)