This book constitutes
the thoroughly refereed proceedings of the 4th International Conference on
Context-Aware Systems and Applications, ICCASA 2015, held in Vung Tau, Vietnam,
in November 2015. The 44 revised full papers presented were carefully selected
and reviewed from over 100 submissions. The papers cover a wide spectrum of
issues in the area of context-aware systems (CAS) and context-based
recommendation systems.

CAS is characterized by its self- facets such as self-organization, self-configuration,
self-healing, self-optimization, self-protection and so on whose context awareness
used to dynamically control computing and networking functions. The overall
goal of CAS is to realize nature-inspired autonomic systems that can manage themselves
without direct human interventions.