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• W4310670010 abstract "Human activity recognition has a significant impact on people’s daily lives. The need to infer human activities is prominent in many human-centric applications, such as healthcare and individual assistance. In this article, we introduce a noninvasive human activity recognition system that utilizes footstep-induced vibration and sound in an outdoor environment with the aim of achieving improved performance over a single source of information. We employ 1-D convolutional neural networks (1-D CNNs) for automated feature extraction, fusion, and activity recognition on a nine-class classification problem. The proposed framework reports an average F1 score of 92%, which corresponds to a 5.74% improvement over the best-performing state-of-the-art. Confusion matrix-based analysis demonstrates that audio-seismic fusion not only reduces misclassifications, but also reduces the impact of background noise on model performance. In addition, we demonstrate that a model trained on a balanced dataset has a higher F1 score than one trained on an imbalanced dataset. Activity-wise performance is reported to show the efficacy of the proposed fusion-based framework. We also contribute an audio-seismic dataset for human activity recognition in an outdoor environment. The dataset is collected in a variety of challenging environments, such as varying grass length, soil moisture content, and the passing of unwanted vehicles." @default.
• W4310670010 created "2022-12-15" @default.
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• W4310670010 date "2022-12-01" @default.
• W4310670010 modified "2023-09-27" @default.
• W4310670010 title "An Audio-Seismic Fusion Framework for Human Activity Recognition in an Outdoor Environment" @default.
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• W4310670010 doi "https://doi.org/10.1109/jsen.2022.3208271" @default.
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