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- W4382316401 abstract "Passive sensing technology enables Wi-Fi-based human activity recognition (HAR), which has been widely noted in recent years. This letter presents a novel Wi-Fi-based class-incremental human activity recognition system that allows for the gradual addition of new activity categories. To the best of our knowledge, this is the first attempt to recognize all previously learned activities under the constraint of limited samples for both the original and newly added activity classes. It is challenging in 1) how to prevent catastrophic forgetting of old activities and 2) how to leverage as few samples as possible to accurately recognize new activities. Therefore, a phased training and update strategy is proposed to avoid the knowledge-forgetting issue. Furthermore, to alleviate the unsatisfactory performance problem caused by insufficient samples of new categories, we design an amplitude-phase enhanced convolution neural network, which integrates an attention mechanism and dual loss function to enhance the feature discrimination and the generalization capability of the model. Extensive experiments show that our system can operate with promising perceptual accuracy in different datasets." @default.
- W4382316401 created "2023-06-28" @default.
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- W4382316401 date "2023-01-01" @default.
- W4382316401 modified "2023-10-05" @default.
- W4382316401 title "Passive Sensing for Class-Incremental Human Activity Recognition" @default.
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- W4382316401 doi "https://doi.org/10.1109/lgrs.2023.3278091" @default.
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