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1998
Conference Paper
Title
WebVizard: Intelligent System for Geodata Visualization and CBT in WWW
Abstract
The aim of this paper is primarily to cover the possibilities and problems of GIS in the WWW. A second aim is to show trends in the areas of CBT and Teleteaching in general and one possible approach of using CBT in a GIS, namely WEB VIZARD. In the WWW there are many Geographic Information Systems (GIS) which use databases. But the possibilities of data access and data visualiyation are restricted because of the inflexibility of their default data queries and visualiyation techniques. WEBVIZARD is an itelligent and flexible client/server system providing access and visualization of geographic data in the World-Wide Web. It employs a knowledge-based system to create effective visualiyations that fit the data characteristics and user requirements. Furthermore WEBVIZARD takes into account peculiarities of the WWW, and special techniques llike metadata concepts or generalization algorithms are used for minimizing the data volume of communication between WWW-browser/client and WWW-server. In order to improve user-friendliness, WEBVIZARD offers a comprehensive support system and also GUI's considering Software ergonomic aspects during development. Java across the Internet represents a perfect platform for CBT and Teleteaching. Due to this fact I examinded the usage of several methodical/didactical concepts in the environment of the WWW. Based on the results of my examination, I developed a learning system prototype - using the concepts of the Leittextmethode - and integrated it into WEBVIZARD.
Conference