Evaluation of radial basis function neural network minimizing L-GEM for sensor-based activity recognition

被引:3
|
作者
Zhang S. [1 ]
Ng W.W.Y. [2 ]
Zhang J. [2 ]
Nugent C.D. [1 ]
Irvine N. [1 ]
Wang T. [2 ]
机构
[1] School of Computing, Ulster University, Co. Antrim, Newtownabbey
[2] School of Computer Science and Engineering, South China University of Technology, Guangzhou
基金
中国国家自然科学基金;
关键词
Activity recognition; Localized generation error; Neural network; Radial basis function neural network; Uncertainty;
D O I
10.1007/s12652-019-01246-w
中图分类号
学科分类号
摘要
Sensor-based activity recognition involves the automatic recognition of a user’s activity in a smart environment using computational methods. The use of wearable devices and video-based approaches have attracted considerable interest in ubiquitous computing. Nevertheless, these methods have limitations such as issues with privacy invasion, ethics, comfort and obtrusiveness. Environmental sensors are an increasingly promising consideration in the ubiquitous computing domain for long-term monitoring, as these devices are non-invasive to inhabitants, yet certain challenges remain with activity recognition in sensorised environments, for example, addressing the challenge of intraclass variation between activities and reasoning from low-level uncertain information. In an effort to address these challenges, this paper proposes and evaluates the performance of a Radial Basis Function Neural Network approach for activity recognition with environmental sensors. The model is trained using the Localized Generalization Error and focuses on the generalization ability by considering both the training error and stochastic sensitivity measure. This measures the network output fluctuation with respect to the minor perturbation of input, to address the tolerance of the low-level uncertain sensor data. This approach is compared with three benchmark Neural Network approaches, including a popular deep learning approach using an Autoencoder, and it is evaluated with a simulated dataset as well as a number of publicly available datasets. The proposed method has shown advantages over the other models for all four evaluated datasets. This paper provides insights into the importance of model generalization abilities and an initial analysis of the limitation of deep Neural Networks with respect to sensor-based activity recognition. © 2019, The Author(s).
引用
收藏
页码:53 / 63
页数:10
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