Frequency-Domain Feature Learning

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Overview

Frequency-domain feature learning studies how models represent patterns at different spatial or temporal frequencies, from periodic trends and rhythms to edges and fine textures. Common approaches use FFT, STFT, DCT, wavelets, or learned filter banks, combined with band-specific branches, spectral attention, adaptive filtering, or fusion with time- and spatial-domain features. These methods are applied to forecasting, image and audio tasks, EEG, graph learning, and inverse problems, while theoretical work examines why models learn some frequencies before others. A central tension is that low-frequency emphasis can capture global structure and improve stability but may lose fine detail; fixed spectral choices, phase and amplitude cues, and band balances do not transfer equally across tasks or domains.

Latest papers

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195 papers12 papers in the last four weeks, up 9% on the four weeks before. 0.1% of all new papers.

  1. Spectral Edge Dynamics Reveal Functional Modes of Learning

    Apr 6, 2026Yongzhong XuNeural Network Training DynamicsGrokking

  2. Spectral Path Regression: Directional Chebyshev Harmonics for Interpretable Tabular Learning

    Apr 5, 2026Milo CoombsTabular RegressionSpectral Methods

  3. Explicit Time-Frequency Dynamics for Skeleton-Based Gait Recognition

    Apr 3, 2026Seoyeon Ko, Yeojin Song, Egene Chung +3Gait RecognitionFrequency-Domain Feature Learning

    Ewha Womans University, Seoul, Korea · University of Trento, Trento TN, Italy

  4. Adaptive Local Frequency Filtering for Fourier-Encoded Implicit Neural Representations

    Apr 3, 2026Ligen Shi, Jun Qiu, Yuhang Zheng +2Implicit Neural RepresentationsFourier Feature Embeddings

    College of Computer Science (College of Software), Inner Mongolia University, Hohhot, 010021, China · Institute of Computational Imaging, Beijing Information Science and Technology University, Beijing, 102206, China · School of Mathematics and Statistics, Wuhan University, Wuhan, 430072, China

  5. Rethinking Representations for Cross-Domain Infrared Small Target Detection: A Generalizable Perspective from the Frequency Domain

    Apr 2, 2026Yimin Fu, Songbo Wang, Feiyan Wu +3Infrared Small Target DetectionCross-Domain Generalization

    Department of Mathematics, Hong Kong Baptist University, Hong Kong, China · School of Automation, Northwestern Polytechnical University, Xi’an, 710072, China · Wangxuan Institute of Computer Technology, Peking University, Beijing, China

  6. HOT: Harmonic-Constrained Optimal Transport for Remote Photoplethysmography Domain Adaptation

    Apr 2, 2026Ba-Thinh Nguyen, Thi-Duyen Ngo, Thanh-Trung Huynh +2Remote PhotoplethysmographyOptimal Transport

    VNU University of Engineering and Technology, Hanoi, Vietnam · College of Engineering and Computer Science, VinUniversity, Hanoi, Vietnam · VinUni-Illinois Smart Health Center, VinUniversity, Hanoi, Vietnam +1

  7. FreqPhys: Repurposing Implicit Physiological Frequency Prior for Robust Remote Photoplethysmography

    Apr 1, 2026Wei Qian, Dan Guo, Jinxing Zhou +3Remote PhotoplethysmographyFrequency-Domain Feature Learning

    Hefei University of Technology · Hefei Comprehensive National Science Center · MBZUAI +2

  8. Epileptic Seizure Detection in Separate Frequency Bands Using Feature Analysis and Graph Convolutional Neural Network (GCN) from Electroencephalogram (EEG) Signals

    Mar 31, 2026Ferdaus Anam Jibon, Fazlul Hasan Siddiqui, F. Deeba +1EEG Seizure DetectionElectroencephalography

    Department of Computer Science and Engineering, Dhaka University of Engineering & Technology (DUET), Gazipur. · Department of Computer Science and Engineering, IUBAT-International University of Business Agriculture and Technology, Uttara, Dhaka-1230. · Department of Physics, Dhaka University of Engineering & Technology (DUET), Gazipur. +1

  9. SPECTRA: An Efficient Spectral-Informed Neural Network for Sensor-Based Activity Recognition

    Mar 27, 2026Deepika Gurung, Lala Shakti Swarup Ray, Mengxi Liu +2Human Activity RecognitionEfficient Neural Network Inference

    RPTU & DFKI, Kaiserslautern, Germany

  10. Spectral Scalpel: Amplifying Adjacent Action Discrepancy via Frequency-Selective Filtering for Skeleton-Based Action Segmentation

    Mar 25, 2026Haoyu Ji, Bowen Chen, Zhihao Yang +6Temporal Action SegmentationBoundary-Aware Segmentation

    Harbin Institute of Technology, Shenzhen · Shenzhen H&T Intelligent Control Co., Ltd. · Southern University of Science and Technology +1

  11. The Order Is The Message

    Mar 24, 2026Jordan LeDouxData-Efficient LearningTraining Data Curation

    Independent Researcher

  12. WaveSFNet: A Wavelet-Based Codec and Spatial--Frequency Dual-Domain Gating Network for Spatiotemporal Prediction

    Mar 24, 2026Xinyong Cai, Runming Xie, Hu Chen +1Spatiotemporal ForecastingConvolutional Neural Networks

    College of Software Engineering, Sichuan University · College of Computer Science, Sichuan University · Sichuan University National Key Laboratory of Fundamental Science on Synthetic Vision

  13. FCL-COD: Weakly Supervised Camouflaged Object Detection with Frequency-aware and Contrastive Learning

    Mar 24, 2026Jingchen Ni, Quan Zhang, Dan Jiang +3Contrastive LearningFrequency-Domain Feature Learning

    Tsinghua University · Soochow University

  14. OmniFM: Toward Modality-Robust and Task-Agnostic Federated Learning for Heterogeneous Medical Imaging

    Mar 23, 2026Meilin Liu, Jiaying Wang, Jing ShanFederated LearningHeterogeneous Federated Learning

    School of Software, Shenyang University of Technology

  15. FSCE: A Target-Aware Frequency-Spatial Collaborative Enhancement Framework for Noise-Resilient SAR ATR

    Mar 23, 2026Yansong Lin, Zihan Cheng, Ziyue Yang +4Image Corruption RobustnessFrequency-Domain Feature Learning

    Laboratory of Intelligent Collaborative Computing, University of Electronic Science and Technology of China, China · School of Computer Science and Engineering (School of Artificial Intelligence), Wuhan Institute of Technology, China · Institute of Automation, Chinese Academy of Sciences, China +1

  16. SpecMoE: Spectral Mixture-of-Experts Foundation Model for Cross-Species EEG Decoding

    Mar 17, 2026Davy Darankoum, Chloé Habermacher, Julien Volle +1EEG DecodingEEG Foundation Models

    Univ. Grenoble Alpes, CNRS, Grenoble INP, LJK 38000 Grenoble, France · SynapCell SAS, ZAC ISIPARC, 38330 Saint-Ismier, France

  17. 3D Fourier-based Global Feature Extraction for Hyperspectral Image Classification

    Mar 17, 2026Muhammad AhmadHyperspectral Image ClassificationFrequency-Domain Feature Learning

    SDAIA-KFUPM, Joint Research Center for Artificial Intelligence (JRCAI), King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.

  18. SRL-MAD: Structured Residual Latents for One-Class Morphing Attack Detection

    Mar 16, 2026Diogo J. Paulo, Hugo Proença, João C. NevesImage Forgery DetectionFace Presentation Attack Detection

    University of Beira Interior, Portugal · IT: Instituto de Telecomunicações · NOVA LINCS

  19. Spectrogram features for audio and speech analysis

    Mar 16, 2026Ian McLoughlin, Lam Pham, Yan Song +7Audio Representation LearningFrequency-Domain Feature Learning

    Singapore Institute of Technology · Austrian Institute of Technology · The University of Science and Technology of China +1

  20. SEMamba++: A General Speech Restoration Framework Leveraging Global, Local, and Periodic Spectral Patterns

    Mar 12, 2026Yongjoon Lee, Jung-Woo ChoiSpeech EnhancementFrequency-Domain Feature Learning

    Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea

  21. ActiveFreq: Integrating Active Learning and Frequency Domain Analysis for Interactive Segmentation

    Mar 12, 2026Lijun Guo, Qian Zhou, Zidi Shi +2Interactive Medical Image SegmentationActive Learning

    School of Computer Science, Wuhan University, Wuhan, 430072, China · Dongguan Polytechnic, Dongguan, 523651, China

  22. FreqCycle: A Multi-Scale Time-Frequency Analysis Method for Time Series Forecasting

    Mar 10, 2026Boya Zhang, Shuaijie Yin, Huiwen Zhu +1Time Series ForecastingFrequency-Domain Time Series Modeling

    Shanghai Jiao Tong University, Shanghai, China

  23. AWPD: Frequency Shield Network for Agnostic Watermark Presence Detection

    Mar 6, 2026Xiang Ao, Yilin Du, Zidan Wang +2Frequency-Domain Feature Learning

    School of Software Engineering, Beijing Jiaotong University, Beijing, 100044, China · School of Traffic and Transportation, Beijing Jiaotong University, Beijing, 100044, China · Law School, Beijing Jiaotong University, Beijing, 100044, China +1

  24. Improving Anomaly Detection with Foundation-Model Synthesis and Wavelet-Domain Attention

    Mar 3, 2026Wensheng Wu, Zheming Lu, Ziqian Lu +5Industrial Anomaly DetectionSynthetic Anomaly Generation

    School of Aeronautics and Astronautics, Zhejiang University, Hangzhou, 310027, China · School of Computer Science and Technology(), , Hangzhou, 310018, China · Ningbo Innovation Center, Zhejiang University, Ningbo, China +2

  25. A Deep Learning Framework for Heat Demand Forecasting using Time-Frequency Representations of Decomposed Features

    Mar 1, 2026Adithya Ramachandran, Satyaki Chatterjee, Thorkil Flensmark B. Neergaard +3Time Series ForecastingMultivariate Time Series Forecasting

  26. Content-Aware Frequency Encoding for Implicit Neural Representations with Fourier-Chebyshev Features

    Mar 1, 2026Junbo Ke, Yangyang Xu, You-Wei Wen +1Implicit Neural RepresentationsFourier Feature Embeddings

    School of Mathematics and Statistics, Hunan Normal University · Department of Statistics and Data Science, Southern University of Science and Technology

  27. SpectralMamba-UNet: Frequency-Disentangled State Space Modeling for Texture-Structure Consistent Medical Image Segmentation

    Feb 26, 2026Fuhao Zhang, Lei Liu, Jialin Zhang +2Medical Image SegmentationVisual SSMs

    College of Computer Science, Sichuan Normal University, Chengdu, Sichuan 610068, China · Zhejiang University & Ant Group, Hangzhou, Zhejiang, China · State Key Laboratory of Public Big Data, Guizhou University, Guiyang, Guizhou 550025, China

  28. UFO-DETR: Frequency-Guided End-to-End Detector for UAV Tiny Objects

    Feb 26, 2026Yuankai Chen, Kai Lin, Qihong Wu +6Small Object DetectionAerial Object Detection

    Easy Lab, College of Mathematics and Informatics, South China Agricultural University, Guangzhou, China · School of Computer Science and Engineering, Southeast University, Nanjing, China · School of Mathematics, Foshan University, Foshan, China

  29. PFGNet: A Fully Convolutional Frequency-Guided Peripheral Gating Network for Efficient Spatiotemporal Predictive Learning

    Feb 24, 2026Xinyong Cai, Changbin Sun, Yong Wang +2Spatiotemporal ForecastingVideo Prediction

    College of Computer Science, Sichuan University · Department of Data and Systems Engineering, The University of Hong Kong

  30. FinSight-Net:A Physics-Aware Decoupled Network with Frequency-Domain Compensation for Underwater Fish Detection in Smart Aquaculture

    Feb 23, 2026Jinsong Yang, Zeyuan Hu, Yichen Li +1Underwater Object DetectionEfficient Object Detection

    Dalian Key Laboratory of Smart Fishery, Dalian, China · College of Information Engineering, Dalian Ocean University, China · Liaoning Provincial Key of Marine Information Technology, China +2