Dealing with uncertainty in a context aware pre-embarkation prompter system to support independent living

With the massive development of sensing technology and the availability of self-tracking devices and apps; the interest in personal data collection has widely increased. However, the data representation methods on these tracking devices and apps have many limitations. Our research concentrates on evaluating different data visualization alternatives that could be used to represents the tracked physical activity data (e.g. step count and heart rate) with regards to usersu0027 performance when solving visual tasks and their preferences in the proposed visualizations.