  In the digital age, it is crucial to understand and tailor experiences for
users interacting with systems and applications. This requires the creation of
user contextual profiles that combine user profiles with contextual
information. However, there is a lack of research on the integration of
contextual information with different user profiles. This study aims to address
this gap by designing a user contextual profile ontology that considers both
user profiles and contextual information on each profile. Specifically, we
present a design and development of the user contextual profile ontology with a
focus on the vehicle sales domain. Our designed ontology serves as a structural
foundation for standardizing the representation of user profiles and contextual
information, enhancing the system's ability to capture user preferences and
contextual information of the user accurately. Moreover, we illustrate a case
study using the User Contextual Profile Ontology in generating personalized
recommendations for vehicle sales domain.
