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Time-frequency representations (TFRs) of signals, such as the windowed Fourier transform (WFT), wavelet transform (WT) and their synchrosqueezed variants (SWFT, SWT), provide powerful analysis tools. However, there are many important issues…

数值分析 · 数学 2014-05-27 Dmytro Iatsenko , Peter V. E. McClintock , Aneta Stefanovska

Deep learning utilizing transformers has recently achieved a lot of success in many vital areas such as natural language processing, computer vision, anomaly detection, and recommendation systems, among many others. Among several merits of…

机器学习 · 计算机科学 2023-12-05 Lena Sasal , Tanujit Chakraborty , Abdenour Hadid

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

This paper presents an epilepsy detection method based on discrete wavelet transform (DWT) and Machine learning classifiers. Here DWT has been used for feature extraction as it provides a better decomposition of the signals in different…

信号处理 · 电气工程与系统科学 2023-07-06 Rabel Guharoy , Nanda Dulal Jana , Suparna Biswas

Although there have now been hundreds of transient gravitational-wave detections of merging compact stars by the LIGO-Virgo-KAGRA (LVK) detector network, no continuous-wave (CW) signals have yet been discovered. To ensure that such signals,…

天体物理仪器与方法 · 物理学 2026-01-16 Preet Baxi , Jessica Leviton , Eilam Morag , Matthew Pitkin , Keith Riles

In recent years, UWB has garnered widespread attention in academia and industry due to its low power consumption, wide bandwidth, and high time resolution characteristics. This paper introduces the design of an asynchronous IR-UWB…

信号处理 · 电气工程与系统科学 2025-03-04 Fan Liu , Bofeng Zheng , Tingting Zhang , Qinyu Zhang

Dynamic link prediction plays a crucial role in diverse applications including social network analysis, communication forecasting, and financial modeling. While recent Transformer-based approaches have demonstrated promising results in…

机器学习 · 计算机科学 2026-03-05 Hantong Feng , Yonggang Wu , Duxin Chen , Wenwu Yu

In areas with limited station coverage, earthquake depth constraints are much less accurate than their latitude and longitude. Traditional travel-time-based location methods struggle to constrain depths due to imperfect station distribution…

地球物理 · 物理学 2026-01-13 Wenda Li , Miao Zhang

Efficient time series forecasting is essential for smart energy systems, enabling accurate predictions of energy demand, renewable resource availability, and grid stability. However, the growing volume of high-frequency data from sensors…

计算工程、金融与科学 · 计算机科学 2025-05-06 Mikkel Bue Lykkegaard , Svend Vendelbo Nielsen , Akanksha Upadhyay , Mikkel Bendixen Copeland , Philipp Trénell

Through numerical simulations, it is predicted that the gravitational waves (GWs) reflect the characteristics of the core-collapse supernova (CCSN) explosion mechanism. There are multiple GW excitation processes that occur inside a star…

高能天体物理现象 · 物理学 2021-10-20 M. Takeda , Y. Hiranuma , N. Kanda , K. Kotake , T. Kuroda , R. Negishi , K. Oohara , K. Sakai , Y. Sakai , T. Sawada , H. Takahashi , S. Tsuchida , Y. Watanabe , T. Yokozawa

Gravitational waves, first predicted by Albert Einstein within the framework of general relativity, were confirmed in 2015 by the LIGO/Virgo collaboration, marking a pivotal breakthrough in astrophysics. Despite this achievement, a key…

广义相对论与量子宇宙学 · 物理学 2025-03-26 Alessandro Licciardi , Davide Carbone , Lamberto Rondoni , Alessandro Nagar

As the complexity increases in modern power systems, power quality analysis considering interharmonics has become a challenging and important task. This paper proposes a novel decomposition and estimation method for instantaneous power…

信号处理 · 电气工程与系统科学 2021-01-14 Yiqing Yu , Wei Zhao , Shisong Li , Songling Huang

Autonomous detection of desired events from large databases using time series classification is becoming increasingly important in civil engineering as a result of continued long-term health monitoring of a large number of engineering…

机器学习 · 计算机科学 2021-01-19 Monica Arul , Ahsan Kareem

Transformer architectures, underpinned by the self-attention mechanism, have achieved state-of-the-art results across numerous natural language processing (NLP) tasks by effectively modeling long-range dependencies. However, the…

机器学习 · 计算机科学 2025-04-15 Andrew Kiruluta , Priscilla Burity , Samantha Williams

We present two search algorithms that implement logarithmic tiling of the time-frequency plane in order to efficiently detect astrophysically unmodeled bursts of gravitational radiation. The first is a straightforward application of the…

广义相对论与量子宇宙学 · 物理学 2009-09-29 S Chatterji , L Blackburn , G Martin , E Katsavounidis

The source localization of the human brain activities is an important resource for the recognition of cognitive state, medical disorders and a better understanding of the brain in general. In this study, we have compared 51 mother wavelets…

信号处理 · 电气工程与系统科学 2019-11-05 Tarek Frikha

As the number of seismic sensors grows, it is becoming increasingly difficult for analysts to pick seismic phases manually and comprehensively, yet such efforts are fundamental to earthquake monitoring. Despite years of improvements in…

地球物理 · 物理学 2021-08-30 Weiqiang Zhu , Gregory C. Beroza

In this article, we develop a general method for constructing wavelets {|det A_j|^{1/2} g(A_jx-x_{j,k}): j in J, k in K}, on irregular lattices of the form X={x_{j,k} in R^d: j in J, k in K}, and with an arbitrary countable family of…

经典分析与常微分方程 · 数学 2007-05-23 Akram Aldroubi , Carlos Cabrelli , Ursula M. Molter

Traveling wave theory is deployed today to improve the monitoring of transmission lines in electrical power grids. Most traveling wave methods require prior knowledge of the wave propagation of the transmission line, which is a major source…

信号处理 · 电气工程与系统科学 2024-04-17 Marko Hudomalj , Andrej Trost , Andrej Čampa

The constant center frequency to bandwidth ratio (Q-factor) of wavelet transforms provides a very natural representation for audio data. However, invertible wavelet transforms have either required non-uniform decimation -- leading to…

音频与语音处理 · 电气工程与系统科学 2023-01-20 Nicki Holighaus , Günther Koliander , Clara Hollomey , Friedrich Pillichshammer