Ontology based location reasoning method using smart phone data

With the exploding increase in the number of smart phone users around the world and the increasing performance of smart phone terminals, the life of common people is changing around the development of smart phone. However, the current smart phone applications do not consider the circumstance or context in which the user is placed on, thus mainly the general services are being provided. In order to get the service proper for their place and situation when using the current applications, the users are required to enter their context information directly. Currently, there is almost no context-aware service platform which takes into account specific situation of users or if exiting, they are in beginning stage. To provide the context-aware services to the users, we have to identify the correct location of the user and also why and for purpose the place was chosen. Accordingly, the correct identification of the user's location is the essential technology to provide the context-aware services to the users. In this paper, we construct the location reasoning ontology using the smart phone sensors, user's application execution logs and keyword search logs, we also proposed the location reasoning method based on the constructed ontology.