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论文类型：期刊论文

发表时间：2012-07-01

发表刊物：IEEE TRANSACTIONS ON INFORMATION TECHNOLOGY IN BIOMEDICINE

收录刊物：SCIE、EI、PubMed

卷号：16

期号：4

页面范围：691-699

ISSN号：1089-7771

关键字：Fuzzy clustering; human activity recognition; incremental learning; probabilistic neural networks; wearable sensor

摘要：Human activity recognition by using wearable sensors has gained tremendous interest in recent years among a range of health-related areas. To automatically recognize various human activities from wearable sensor data, many classification methods have been tried in prior studies, but most of them lack the incremental learning abilities. In this study, an incremental learning method is proposed for sensor-based human activity recognition. The proposed method is designed based on probabilistic neural networks and an adjustable fuzzy clustering algorithm. The proposed method may achieve the following features. 1) It can easily learn additional information from new training data to improve the recognition accuracy. 2) It can freely add new activities to be detected, as well as remove existing activities. 3) The updating process from new training data does not require previously used training data. An experiment was performed to collect realistic wearable sensor data from a range of activities of daily life. The experimental results showed that the proposed method achieved a good tradeoff between incremental learning ability and the recognition accuracy. The experimental results from comparison with other classification methods demonstrated the effectiveness of the proposed method further.