In Active and Assisted Living (AAL) systems, a major task is to support old people who suffer
from diseases such as Dementia or Alzheimer. To provide required support, it is essential to
know their Activities of Daily Living (ADL) and support them accordingly. Thus, the accurate
recognition of human activities is the foremost task of such an AAL system, especially when
non-video/audio sensors are used. It is common that one or more sensors could share or
represent a unique activity, and consequently, finding out the most optimal window size …