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Beschreibung:
Summary of the thesis topic: Visualization of information spaces For a user it is hard to recognize the relevance of documents based on a a textual information list, which is returned by a search engine after searching in the World Wide Web. Neither is he is able to discover the relevant information through navigating the document references, since the navigation does not occur in a closed space. The user has to browse through references of one document to the next, and does not always come back to the starting point. The user thereby loses the overview of the found documents. It becomes problematic to search information with several keywords. The proximity of the found documents for the individual search keyword is not clear from the result list. This is particularly disadvantageous if an indistinct information search is accomplished. A solution for this problem lies in the graphic representation of the information space (the document amount was determined with the search keywor). This work analyzes existing approaches of information visualization from different grounds in the practice, that are, however, limited on a pure graphic representation. Therefore, it is necessary to develop a new approach, that supports user representation and analysis of the set of results as well as providing the means for effective isolation of the actual interesting set of documents. In this work the requirements for the information search are analyzed and converted into a system model. The result is a design with the following characteristics: -- modular structure of the system, -- platform-independence, -- extensibility, -- the system contains open interfaces for integration with arbitrary search engines, -- filter mechanisms are integrated into the system, which permit an effective reduction of the set of documents. -- the system is able to work online and may also be used to analyse a once determined search result later, -- several variants of the graphic representation which can be used for the different types of information ...