Products and Coproducts of Autonomic Systems -- Finite Limits and Colimits in Autonomic Systems -- A Context-Aware Healthcare Architecture for the Elderly -- Snapcab: Urban Scale Context-Aware Smart Transport using Adaptive Context Tries -- Sound Waves Gesture Recognition for Human-Computer Interaction -- Context-Based Classifier Grids Learning for Object Detection in Surveillance Systems -- Using the Cumulative Sum Algorithm Against Distributed Denial of Service Attacks in Internet of Things -- Memory Resource Estimation of Component-Based Systems -- Context-aware Approach for Determining the Threshold Price in Name-Your-Own-Price Channels -- Travel Destination Recommendation based on Probabilistic Spatio-temporal Inference -- MBTI-based Collaborative Recommendation System: A Case Study of Webtoon Contents -- Social Affinity based Group Recommender System -- Context-based Traffic Recommendation System -- User Timeline and Interest-based Collaborative Filtering on Social Network -- Community Centrality-based Greedy Approach for Identifying Top-K Influencers in Social Networks -- Context-based Service Identification in the Museum Environment -- A Federated Approach for Simulations in Cyber-Physical Systems. .

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.