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As citizens' age increases, smart cities must adapt to help them to age properly. The objective of the City4Age project is to create the future ambient assisted cities that will help the citizens to deal with mild cognitive impairments (MCI) and frailty. In this paper we present two of the tools developed during the project. The first one is a city-wide context-manager, which allows to store the citizens information using a semantic representation and share it following the linked open data paradigm. The second one are the individual care monitoring dashboards, which use the stored information to help the caregivers to analyze and interpret the citizens' behaviour, allowing to detect risks related to MCI and frailty.

PurposeThe paper aims to present an approach for services in the domain of tourism based on a software application in the area of ontology engineering, showing a methodology for intelligent knowledge‐based P2P networks creation, in the tourism knowledge domain, given that, potential tourists share and organize their experiences, interests and knowledge. Using the proposed software application, they automatically exchange their knowledge, with an intelligent and transparent way, with other users that have the same or similar interests and make use of it.Design/methodology/approachThe approach followed was categorizing tourism‐related interests and services into ontologies (system and user), then comparing them, using intelligent algorithms, suggesting new, unknown to the user, interests. The data were evaluated by experts in order to provide a guide for correct (according to the expert) interestingness of profile concepts.FindingsThe paper presents the outcomes of the software used, running on mobile devices, showing the connection for them, among user knowledge profiles and tourism services. It has been found that the return results (concepts) are of high interestingness to the user.Research limitations/implicationsExperiments have been performed with one central ontology, used as reference and two user ontologies at the same time. The authors would suggest more experimentation, with more users connected concurrently.Practical implicationsOf high practical importance is the creation of intelligent social networking processes and user communities based on interests for further e‐commerce activities, based on a semantic framework.Originality/valueThe paper fulfils the need for intelligent interaction and distribution of knowledge and content to users in an autonomous way, anywhere.

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