Results 11 to 20 of about 5,802,905 (300)
Wavelet Theory Demystified [PDF]
IEEE Transactions on Signal Processing, 2003 We revisit wavelet theory starting from the representation of a scaling function as the convolution of a B-spline (the regular part of it) and a distribution (the irregular or residual part). This formulation leads to some new insights on wavelets and makes it possible to rederive the main results of the classical theory - including some new extensions
Thierry Blu, Michael A. Unser
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Wavelets and Filter Banks: Theory and Design
IEEE Transactions on Signal Processing, 1992 The wavelet transform is compared with the more classical short-time Fourier transform approach to signal analysis. Then the relations between wavelets, filter banks, and multiresolution signal processing are explored. A brief review is given of perfect reconstruction filter banks, which can be used both for computing the discrete wavelet transform ...
Martin Vetterli, C Herley
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Wavelet-Based Quantum Field Theory [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2007 The Euclidean quantum field theory for the fields $phi_{Delta x}(x)$, which depend on both the position $x$ and the resolution $Delta x$, constructed in SIGMA 2 (2006), 046, on the base of the continuous wavelet transform, is considered.
Mikhail V. Altaisky
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Applying Hybrid Models Based on Deep Machine Learning in Smart Agriculture (Case study: Forecasting the Future Price of Pistachios) [PDF]
مجله اقتصاد و توسعه کشاورزی, 2023 Introduction The agricultural sector is one of the most basic and vital component in the social and economic structures of any country. Today, with increasing in the world's population and needing to provide food on the other hand, and increasing in the ...
M.R. Haj-Seyedjavadi, R. Heydari
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Haar wavelet fractional derivative [PDF]
Proceedings of the Estonian Academy of Sciences, 2022 In this paper, the fundamental properties of fractional calculus are discussed with the aim of extending the definition of fractional operators by using wavelets.
Carlo Cattani
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Wavelet analysis of temporal data [PDF]
, 2008 This thesis considers the application of wavelets to problems involving multiple series of temporal data. Wavelets have proven to be highly effective at extracting frequency information from data.
Goodwin, David Alexander
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A New Method for Calculating Earthquake Characteristics and Nonlinear Spectra Using Wavelet Theory [PDF]
Journal of Rehabilitation in Civil Engineering, 2020 In the present study applying the wavelet theory (WT) and later the nonlinear spectrum response of the acceleration (NSRA) resulted in estimating a strong earthquake record for the structure to a degree of freedom. WT was applied in order to estimate the
Ali Heidari +2 more
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Estimation of the Local Scour from a Cylindrical Bridge Pier Using a Compilation Wavelet Model and Artificial Neural Network [PDF]
Journal of Hydraulic Structures, 2021 In the present study, an artificial neural network and its combination with wavelet theory are used as the computational tool to predict the depth of local scouring from the bridge pier.
Mehran Seifollahi +5 more
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Wavelet based Filtered historical simulation in different time horizons in Tehran Stock Exchange [PDF]
فصلنامه بورس اوراق بهادار, 2022 Expected Shortfall (ES) is the average return on a risky asset conditional on the return being below some quantile of its distribution, namely its Value-at-Risk (VaR).
Javad Shekarkhah +2 more
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A Theory for Multiresolution Signal Decomposition: The Wavelet Representation
IEEE Transactions on Pattern Analysis and Machine Intelligence, 1989 Multiresolution representations are effective for analyzing the information content of images. The properties of the operator which approximates a signal at a given resolution were studied. It is shown that the difference of information between the approximation of a signal at the resolutions 2/sup j+1/ and 2/sup j/ (where j is an integer) can be ...
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