Comparative Visualization of User Flows in Voice Portals

Björn Zimmer, Dennie Ackermann, Manfred Schröder, Andreas Kerren, Volker Ahlers

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review


Voice portals are widely used to guide users interactively through an application. Recent portals provide a growing number of functions in one application, thus increasing their complexity. This work presents flow-map-based techniques for the comparative visualization of user flows at different time frames, in order to enable dialog designers to analyze and improve the user interaction with these systems. Natural Language Systems in Voice Portals: More sophisticated voice portals use natural language systems (NLS), giving users the option to actually “talk” to the system in whole sentences. The system tries to interpret these sentences and interactively asks the user for detailed information, if necessary. Portals using NLS are rather large and complex, making it difficult to analyze their performance. Especially after applying changes to a voice portal or in case of technical problems, it is important to be able to analyze the consequences on user flows in the system.
Original languageEnglish
Title of host publicationProceedings of the 18th International Symposium on Graph Drawing (GD '10)
Publication statusPublished - 2010
Event18th International Symposium on Graph Drawing - Konstanz, Germany
Duration: 21 Sept 201024 Sept 2010


Conference18th International Symposium on Graph Drawing
Internet address


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