Ontology based Indoor Navigation Service for the ILONA System

Kun, Dániel Péter and Baksáné Varga, Erika and Tóth, Zsolt (2018) Ontology based Indoor Navigation Service for the ILONA System. INFOCOMMUNICATIONS JOURNAL, 10 (3). pp. 20-29. ISSN 2061-2079

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Abstract

An ontology based way finding algorithm is presented in this paper that allows route generation between two separate parts of an indoor environment. The presented ontology provides a flexible way to describe and model the indoor environment, in addition it fits and extends the existing model of the ILONA System. Ontology reasoners provide an efficient way to perform complex queries over the knowledge base. The instances, that are queried by the reasoner, are used to initialize the graph which represents an indoor environment. Due to parameterization of the reasoner, different graphs can be generated from the ontology which makes the way finding algorithm flexible. Thus, the task of indoor way finding was converted into a well-known graph search problem. Dijkstra’s shortest path algorithm is used for route generation in the graph yielded. The algorithm was implemented and tested in the ILONA System and its functioning is demonstrated by real-life scenarios.

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