Table 1.

Ontology classes of a personal profile.

Class	Annotation
Person	Basic user information (e.g., name, sex, age, etc.)
Characteristics	General user characteristics (e.g., height, weight, etc.)
Ability	User abilities and disabilities, both mental and physical
Chronic Status	User diseases (e.g., hypertension, hemorrhagic stroke)
Living Conditions	Information relevant to the user’s residence
Contact	Other persons, with whom the person is related (e.g., including relatives, friends, co-workers)
Preferences	User preferences (e.g., love cats, prefer blue color, dislike classical music)
Interests	User hobby or work-related interests. For example, “interested in sports”, “interested in cooking”
Activity	User activities, hobby or work related
Education	User education issues, including for example university diplomas and languages
Profession	The user’s profession
Expertise	computer, Internet, mobile devices, etc.