Personal Intelligent Travel Assistant. A distributed approach

At Delft University of Technology there is a project running on the development of a traffic information-system. The paper presents a using of XML for multimodal communication with an intelligent travel assistant. The personal Intelligent Travel Assistant(PITA) provides the user with a personalized, up-to-date advice on a handheld device, which takes into account actual delays and user preferences. The travelers themselves provide information about delays of trains, using GPS to estimate whether a user is experiencing a delay. Furthermore a website of the Dutch Railways provides information on delays for 83 stations in the Netherlands. To find optimal routes, considering train changes and the user preferences, an adapted version of the DYNET algorithm was selected and implemented. By extending the static information on the train schedule with dynamic information on delays, a prototype of a dynamic route guidance system was designed and implemented with multimodal interface, which runs on a Sharp Zaurus handheld.

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