Technological Approach for Behavior Change Detection toward Better Adaptation of Services for Elderly People Topics: Application of Health Informatics in Clinical Cases; Development of Assistive Technology; ICT, Ageing and Disability; Medical Informatics; Pervasive Health Systems and Services In Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 5: BIOSTEC, 96-105, 2017 , Porto, Portugal