Abstract
Current Location Based Services (LBS) don’t take into account the status of the services neither the real time traffic conditions. Aim of the paper is to show how LBSs may evolve towards location intelligence services based on Horn clauses expressed in Prolog to find the most suitable services for the users and the relevant paths to reach them by taking into account the current traffic situation. Fuzzy logic and semantic web technologies are also used to improve the LBS applications. The former to find the services that meet the user expectations, the latter to take advantage from all the information stored on the distributed databases at urban/metropolitan scale. A case study developed using Ruby on Rails (RoR) and JQueryMobile illustrates how such a web service may work in practice. A comparison between the RoR version and another one where mobiles play a more active role is also discussed.
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