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Due to the emergence of new high resolution numerical weather prediction (NWP) models and the availability of new or more reliable remote sensing data, the importance of efficient spatial verification techniques is growing. Wavelet…

大气与海洋物理 · 物理学 2017-04-05 Michael Weniger , Florian Kapp , Petra Friederichs

Wavelet transformation stands as a cornerstone in modern data analysis and signal processing. Its mathematical essence is an invertible transformation that discerns slow patterns from fast ones in the frequency domain. Such an invertible…

机器学习 · 计算机科学 2022-01-28 Shuo-Hui Li

Graph Transformer (GT), as a special type of Graph Neural Networks (GNNs), utilizes multi-head attention to facilitate high-order message passing. However, this also imposes several limitations in node classification applications: 1) nodes…

机器学习 · 计算机科学 2024-10-16 Jiajun Zhou , Xuanze Chen , Chenxuan Xie , Yu Shanqing , Qi Xuan , Xiaoniu Yang

Solar spectropolarimetric inversion -- inferring atmospheric conditions from the Stokes vector -- is a key diagnostic tool for understanding solar magnetism, but traditional inversion methods are computationally expensive and sensitive to…

太阳与恒星天体物理 · 物理学 2025-11-17 Ryan James Campbell , Mihalis Mathioudakis , Carlos Quintero Noda

Multimodal data provide complementary information of a natural phenomenon by integrating data from various domains with very different statistical properties. Capturing the intra-modality and cross-modality information of multimodal data is…

机器学习 · 计算机科学 2021-11-29 Maysam Behmanesh , Peyman Adibi , Mohammad Saeed Ehsani , Jocelyn Chanussot

Deep learning based single image super resolution (SISR) algorithms has revolutionized the overall diagnosis framework by continually improving the architectural components and training strategies associated with convolutional neural…

图像与视频处理 · 电气工程与系统科学 2022-03-15 Fayaz Ali Dharejo , Muhammad Zawish , Farah Deeba Yuanchun Zhou , Kapal Dev , Sunder Ali Khowaja , Nawab Muhammad Faseeh Qureshi

In this work, we focus on front-end design for speech deepfake detectors, the component that determines the discriminative acoustic cues provided to the classifier. Existing approaches are primarily categorized into two types. Hand-crafted…

音频与语音处理 · 电气工程与系统科学 2026-05-01 Xi Xuan , Davide Carbone , Wenxin Zhang , Ruchi Pandey , Tomi H. Kinnunen

This paper proposes a new framework based on a wavelet transform and deep neural network for identifying noisy Raman spectrum since, in practice, it is relatively difficult to classify the spectrum under baseline noise and additive white…

Identifying high-emission vehicles is a crucial step in regulating urban pollution levels and formulating traffic emission reduction strategies. However, in practical monitoring data, the proportion of high-emission state data is…

机器学习 · 计算机科学 2025-08-19 Yunning Cao , Lihong Pei , Jian Guo , Yang Cao , Yu Kang , Yanlong Zhao

Orthogonal wavelet transforms are a cornerstone of modern signal and image denoising because they combine multiscale representation, energy preservation, and perfect reconstruction. In this paper, we show that these advantages can be…

统计计算 · 统计学 2026-03-04 Radhika Kulkarni , Brani Vidakovic

We review scale-discretized wavelets on the sphere, which are directional and allow one to probe oriented structure in data defined on the sphere. Furthermore, scale-discretized wavelets allow in practice the exact synthesis of a signal…

信息论 · 计算机科学 2013-12-10 J. D. McEwen , P. Vandergheynst , Y. Wiaux

Recent years have witnessed the unprecedented rising of time series from almost all kindes of academic and industrial fields. Various types of deep neural network models have been introduced to time series analysis, but the important…

机器学习 · 计算机科学 2018-06-26 Jingyuan Wang , Ze Wang , Jianfeng Li , Junjie Wu

Generalized spatial modulation (GSM) is a spectral-efficient technique used in multiple-input multiple-output (MIMO) wireless communications when the number of radio frequency chains at the transmitter is less than the number of transmit…

信息论 · 计算机科学 2020-08-11 Lakshit Singla , Lakshmi Natarajan

Automatic Music Transcription (AMT) is one of the oldest and most well-studied problems in the field of music information retrieval. Within this challenging research field, onset detection and instrument recognition take important places in…

机器学习 · 统计学 2017-03-30 D. Cazau , G. Revillon , O. Adam

Convolutional neural network (CNN) architectures have originated and revolutionized machine learning for images. In order to take advantage of CNNs in predictive modeling with audio data, standard FFT-based signal processing methods are…

声音 · 计算机科学 2025-02-20 Pavol Harar , Roswitha Bammer , Anna Breger , Monika Dörfler , Zdenek Smekal

Graph neural networks (GNNs) have revolutionized the field of machine learning on non-Euclidean data such as graphs and networks. GNNs effectively implement node representation learning through neighborhood aggregation and achieve…

机器学习 · 计算机科学 2024-04-30 Zehao Dong , Muhan Zhang , Yixin Chen

With noisy environment caused by fluoresence and additive white noise as well as complicated spectrum fingerprints, the identification of complex mixture materials remains a major challenge in Raman spectroscopy application. In this paper,…

信号处理 · 电气工程与系统科学 2020-10-30 Liangrui Pan , Pronthep Pipitsunthonsan , Chalongrat Daengngam , Mitchai Chongcheawchamnan

This paper derives a generalized class of waveforms with an application to machine-type communication (MTC) while studying its underlying structural characteristics in relation to conventional modulation waveforms. First, a canonical…

信号处理 · 电气工程与系统科学 2024-07-02 Michael Wang , Lei Wang , Xiaohu You

The sky localization of the gravitational wave (GW) source is an important scientific objective for GW observations. A network of space-based GW detectors dramatically improves the sky localization accuracy compared with an individual…

广义相对论与量子宇宙学 · 物理学 2022-07-06 Chunyu Zhang , Yungui Gong , Chao Zhang

To improve diagnostic accuracy of breast cancer detection, several researchers have used the wavelet-based tools, which provide additional insight and information for aiding diagnostic decisions. The accuracy of such diagnoses, however, can…

统计方法学 · 统计学 2022-01-25 Minkyoung Kang , William Auffermann , Brani Vidakovic