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1,105 results on '"Xie, Xiaofeng"'

5. Simulation and Evaluation of Passenger Flow Control in Urban Rail Transit Stations Based on System Dynamics

Author

Ruan, Dawei, Jiang, Peng, Wang, Daochu, Xie, Xiaofeng, Yang, Wenjie, Hu, Mingwei, Ceccarelli, Marco, Series Editor, Agrawal, Sunil K., Advisory Editor, Corves, Burkhard, Advisory Editor, Glazunov, Victor, Advisory Editor, Hernández, Alfonso, Advisory Editor, Huang, Tian, Advisory Editor, Jauregui Correa, Juan Carlos, Advisory Editor, Takeda, Yukio, Advisory Editor, and Li, Shaofan, editor

Published
2024
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29. Software-Defined Edge Computing: A New Architecture Paradigm to Support IoT Data Analysis

Author

Wu, Di, Xie, Xiaofeng, Ni, Xiang, Fu, Bin, Deng, Hanhui, Zeng, Haibo, and Qin, Zhijin

Subjects
Computer Science - Networking and Internet Architecture, Computer Science - Machine Learning
Abstract

The rapid deployment of Internet of Things (IoT) applications leads to massive data that need to be processed. These IoT applications have specific communication requirements on latency and bandwidth, and present new features on their generated data such as time-dependency. Therefore, it is desirable to reshape the current IoT architectures by exploring their inherent nature of communication and computing to support smart IoT data process and analysis. We introduce in this paper features of IoT data, trends of IoT network architectures, some problems in IoT data analysis, and their solutions. Specifically, we view that software-defined edge computing is a promising architecture to support the unique needs of IoT data analysis. We further present an experiment on data anomaly detection in this architecture, and the comparison between two architectures for ECG diagnosis. Results show that our method is effective and feasible.

Published
2021

30. The Triangle Differential Cryptanalysis

Author

Xie, Xiaofeng, Tian, Tian, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Simpson, Leonie, editor, and Rezazadeh Baee, Mir Ali, editor

Published
2023
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43. Single-Trial EEG Classification via Orthogonal Wavelet Decomposition-Based Feature Extraction

Author

Qi, Feifei, Wang, Wenlong, Xie, Xiaofeng, Gu, Zhenghui, Yu, Zhu Liang, Wang, Fei, Li, Yuanqing, and Wu, Wei

Subjects
Biological Psychology, Biomedical and Clinical Sciences, Neurosciences, Psychology, brain-computer interface, l2-norm regularization, orthogonal wavelet decomposition, relevance vector machine, sparse Bayesian learning, spatio-spectral filtering, Cognitive Sciences, Biological psychology
Abstract

Achieving high classification performance is challenging due to non-stationarity and low signal-to-noise ratio (low SNR) characteristics of EEG signals. Spatial filtering is commonly used to improve the SNR yet the individual differences in the underlying temporal or frequency information is often ignored. This paper investigates motor imagery signals via orthogonal wavelet decomposition, by which the raw signals are decomposed into multiple unrelated sub-band components. Furthermore, channel-wise spectral filtering via weighting the sub-band components are implemented jointly with spatial filtering to improve the discriminability of EEG signals, with an l 2-norm regularization term embedded in the objective function to address the underlying over-fitting issue. Finally, sparse Bayesian learning with Gaussian prior is applied to the extracted power features, yielding an RVM classifier. The classification performance of SEOWADE is significantly better than those of several competing algorithms (CSP, FBCSP, CSSP, CSSSP, and shallow ConvNet). Moreover, scalp weight maps of the spatial filters optimized by SEOWADE are more neurophysiologically meaningful. In summary, these results demonstrate the effectiveness of SEOWADE in extracting relevant spatio-temporal information for single-trial EEG classification.

Published
2021

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