Abstract
With the trend of the increasing ageing population, more elderly people often encounter some problems in their daily lives. To enable these people to have more carefree lives, smart homes are designed to assist elderly people by recognizing their daily activities. Although different models and algorithms that use temporal and spatial features for activity recognition have been proposed, the rigid representations of these features damage the accuracy of activity recognition. In this paper, a two-stage approach is proposed to recognize the activities of a single resident. Firstly, in terms of temporal features, the approximate duration, start and end time are extracted from the activity records. Secondly, a set of activity records is clustered according to the records’ temporal features. Then, the classifiers are used to recognize the daily activities in each cluster according to the spatial features. Finally, two experiments are done to validate the recognition of daily activities in order to compare the proposed approach with a one-dimensional model. The results demonstrate that the proposed approach favorably outperforms the one-dimensional model. Two public datasets are used to evaluate the proposed approach. The experiment results show that the proposed approach achieves average accuracies of 80% and 89%, respectively.
Highlights
With the trend of the ageing population, more elderly people must live alone and cannot receive care from their children or spouses
The accuracies, precisions and F-measures of the activity recognition of classifiers naive Bayesian (NB), k-nearest neighbor (kNN), C4.5 and random forest (RF) are shown in Figures 7–9, respectively
To better aid elderly people by using context-aware services, this paper proposes a two-stage approach for the activity recognition of a single resident
Summary
With the trend of the ageing population, more elderly people must live alone and cannot receive care from their children or spouses. It is well known that elderly people are prone to accidents in their daily lives. It is difficult to recognize in a timely manner that an accident has occurred. To help single elderly people live healthy lives, smart homes are being developed to detect the daily activities of elderly people. The activity recognition is the key function in the smart home development. There has been considerable research on activity recognition in smart homes. This research can be divided into five categories, depending on the monitoring technology [1]
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