CSI-Based Human Activity Recognition With Graph Few-Shot Learning
| Autor: | Yujie Wang, Yong Zhang, Andong Cheng, Yang Chen, Qingqing Liu |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Computer Networks and Communications
Computer science business.industry Deep learning Feature vector Feature extraction Machine learning computer.software_genre Computer Science Applications Activity recognition Hardware and Architecture Channel state information Signal Processing Graph (abstract data type) Artificial intelligence business Transfer of learning computer Information Systems Block (data storage) |
| Zdroj: | IEEE Internet of Things Journal. 9:4139-4151 |
| ISSN: | 2372-2541 |
| DOI: | 10.1109/jiot.2021.3103073 |
| Popis: | Human Activity Recognition(HAR) based on Channel State Information(CSI) plays an increasingly important role in the research of human-computer interaction. Many CSI HAR models based on traditional machine learning methods and deep learning methods have encountered two challenges. A lot of CSI activity data is needed to train the HAR models, which is time-consuming. When the indoor environment or scene changes, the recognition accuracy of the model drops significantly, so it is necessary to re-collect data to train the model. The existing few-shot learning-based method can solve the above problems to some extent, but when there are more kinds of new activities or fewer shots, the recognition accuracy will decrease significantly. In this paper, considering the relationship between various activity data, a Graph-based few-shot learning mothod with Dual Attention Mechanism(CSI-GDAM) is proposed to perform CSI-based HAR. The model uses a feature extraction layer including Convolutional Block Attention Module(CBAM) to extract activity-related information in CSI data. The difference and inner product of the feature vector of the CSI activity samples are used to realize the graph convolutional network with graph attention mechanism. The experiments proved that under the learning task of recognizing new activities in the new environment, the recognition accuracy rates reached 99.74% and 98.42% in the 5-way 5-shot and 5-way 1-shot cases, respectively. The proposed method is also compared with other few-shot learning and transfer learning methods. |
| Databáze: | OpenAIRE |
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