Ontology-based Portable Campus Guidance System
Date Issued
2008
Date
2008
Author(s)
Chen, Li-Lu
Abstract
The thesis proposes a campus guidance system that is aware of the operating context to provide users adaptive tours. The requirements of the system are different from the use of the navigation system and the museum digital guide system. The campus guidance system provides the information of the scenic spots in the environment that users are interested in, but the navigation system only leads in a shortest path to the destination and displays the spots along the way. The spot information includes the knowledge of the campusuidance and the experience from the campus guides. Moreover, the campus guidance system also organizes the relationships between those spots, but the museum digital guide system just introduce the exhibits to users who are in front of them. In this thesis, the campus guidance system should be flexible according to various requirements of visitors, and this system should utilize data of visitors and information about the circumstances to guide themdaptively. he campus guidance system uses two main technologies: context-awareness and knowledge conceptualization. Context awareness deals with related changes in the environment. Knowledge conceptualization uses ontology to represent a set of concepts within a knowledge domain and the relationships between these concepts. In the system, the goal of context-awareness is to obtain and cope with the data from visitors'' profiles, interests and positions, and information of date and time. The system obtains visitor''s data by inputs and uses GPS receiver to get the visitor''s position. The campus guidance knowledge, based on the node-oriented concepts built by ontology, could infer high-level information with the context-aware data. The ontology-based knowledge could support real-time inference to meet the actual situations of usage. The thesis integrates these mentioned ontology and context-aware technologies into the system on a multi agent platform, JADE. Therefore, this system could be ported to any PC-based computer withava Runtime Environment. A portable system is implemented to provide adaptive information for tours of the NTU campus. In addition, the campus guidance system could assist the training of the campus guides. Three scenarios, normal guidance, overtime guidance and near lunchtime guidance, are demonstrated to verify the capabilities of the system.
Subjects
Ontology
Context-aware
Guidance
Type
thesis
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