Uncertainty measures in an ambient intelligence environment
Caroline Sharon Langensiepen, Ahmad Lotfi · 2017
In this paper we apply the Fuzzy Entropy and Approximate Entropy measures to the Activities of Daily Living (ADL) for a set of elderly subjects in their own homes, and compare the entropy measures against a simpler count of activity transitions. The aim is to assess whether a single relatively simple measure can give an overview of the ADL in order to provide summaries of the wellbeing of an elderly person for their carers or relatives. We find that both the entropy measures and activity count vary considerably between different elderly people, and from day to day. The absolute level of these measures seems to be indicative of different ADL levels. However, it appears that further analysis over a longer period and with more annotation by the volunteers is necessary before the measures can be appropriately interpreted.