Active and Healthy Ageing Big Dataset Streaming on Demand

Designing and conducting user studies and pilot trials within the Active and Healthy Ageing (AHA) domain remains a major challenge for researchers. This work presents the architecture and implementation of an infrastructure for streaming and playing back AHA datasets recorded in ecologically valid environments on demand. The CAC Playback Manager presented in this paper, is a system composed of a number of streaming players delivering data streams to remote clients. This manager simulates the output of sensors that have been previously recorded during a pilot trial or experiment. The recorded output is reproduced (playback) through the CAC-framework communication channel as if the pilot/experiment was conducted now. The CAC Playback Manager exposes its functionality through an API to facilitate researchers in utilizing it. A web application has been developed on top of this API in order to facilitate the study of several use cases presented within this work. Finally, the potential socioeconomic impact of the system is presented.