arXiv Machine Learning By Chenyu Zhu, Zeyang Li, Ziyi Xie, Jie Zhang

Few-Shot Specific Emitter Identification via Integrated Complex Variational Mode Decomposition and Spatial Attention Transfer

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The paper presents a new approach for specific emitter identification (SEI) that combines an integrated complex variational mode decomposition algorithm with a temporal convolutional network and a spatial attention mechanism. This method improves feature extraction from complex-valued signals and adaptively emphasizes informative segments, leading to higher identification accuracy. Experiments show the model reaches 96% accuracy using only 10 symbols and no prior knowledge, demonstrating its effectiveness in low‑data scenarios.

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arXiv Computer Vision
Sep 22

CIG-MAE: Cross-Modal Information-Guided Masked Autoencoder for Self-Supervised WiFi Sensing

CIG-MAE is a self‑supervised framework for WiFi‑based human action recognition that uses a cross‑modal masked autoencoder to reconstruct both amplitude and phase of Channel State Information. It introduces an adaptive, information‑guided masking strategy that focuses on high‑density time‑frequency regions and employs a Barlow Twins regularizer to align cross‑modal representations without negative samples. Experiments on three public datasets show that CIG‑MAE outperforms state‑of‑the‑art SSL methods and even surpasses a fully supervised baseline, highlighting its data efficiency, robustness, and generalization.

By Gang Liu, Yanling Hao, Yixuan Zou