  The concern over global urbanization trend imposes smart-city as enabling
information and communication technology (ICT) to improve urban governance.
However, the light trance on better living space is stimulated by socioeconomic
impact of escalated senior generation. Hence, ambient assisted living (AAL)
emerges for the autonomous provisioning of pervasive things or objects from
relevant perturbation for advanced scientific instrumentation. Meanwhile,
citizens are observed in being transfixed by lively stimuli of monotonous urban
events with the advent of virtual reality or augmented things. Thus, due to the
involvement of situation-awareness or contextualization,
engagement/participation information as a utility promises to improve urban
experience. However, it is complex to grapple meaningful concepts due to
personalization obstacles, such as citizen psychology, information gap,
service-visualization. Moreover, recommended practices deficit adaptation to
monochromatic choice, disparate impairments, mobility and annotation-richness
in urban space. Hence, rejuvenation of engagement relates to monitoring and
quantification of 'service consumption and graceful degradation' of experience.
However, paramount challenges are imposed on this stipulation, such as,
unobservability, independence and composite relationship of contexts.
Therefore, a parametric Bayesian based model is envisioned to address
observability and scalability of contexts and its conjugal relationship with
engagement. Last but not the least, systematic framework is demonstrated, which
pinpoints key goals of context-aware engagement from participants' opinions,
usages and feed-backs.
