Results 31 to 40 of about 181,289 (318)

Full Bayesian wavelet inference with a nonparametric prior [PDF]

open access: yes, 2012
In this paper,we introduce a new Bayesian nonparametric model for estimating an unknown function in the presence of Gaussian noise.The proposed model involves a mixture of a point mass and an arbitrary (nonparametric) symmetric and unimodal distribution
Wang, Xue, Walker, Stephen G.
core   +1 more source

Beam-like damage detection methodology using wavelet damage ratio and additional roving mass

open access: yesFracture and Structural Integrity, 2022
Early damage detection plays an essential role in the safe and satisfactory maintenance of structures. This work investigates techniques that use only damaged structure responses.
Juliana C. Santos   +5 more
doaj   +1 more source

Image resolution enhancement using dual-tree complex wavelet transform [PDF]

open access: yes, 2010
In this letter, a complex wavelet-domain image resolution enhancement algorithm based on the estimation of wavelet coefficients is proposed. The method uses a forward and inverse dual-tree complex wavelet transform (DT-CWT) to construct a high-resolution
Tjahjadi, Tardi, Çelik, Turgay
core   +1 more source

Penalized wavelet monotone regression [PDF]

open access: yes, 2007
In this paper we focus on nonparametric estimation of a constrained regression function using penalized wavelet regression techniques. This results into a convex op- timization problem under linear constraints.
Irène Gijbels   +5 more
core   +1 more source

Adjustment and Assessment of the Measurements of Low and High Sampling Frequencies of GPS Real-Time Monitoring of Structural Movement

open access: yesISPRS International Journal of Geo-Information, 2016
Global Positioning System (GPS) structural health monitoring data collection is one of the important systems in structure movement monitoring. However, GPS measurement error and noise limit the application of such systems. Many attempts have been made to
Mosbeh R. Kaloop   +2 more
doaj   +1 more source

How do oil price changes affect inflation in Central and Eastern European countries? A wavelet-based Markov switching approach

open access: yesBaltic Journal of Economics, 2019
This paper investigates how oil price changes affect consumer price inflation in eleven Central and Eastern European countries. We use a wavelet-based Markov switching approach in order to distinguish between the effects at different time horizons.
Dejan Živkov   +2 more
doaj   +1 more source

Forecasting daily river flow using an artificial flora–support vector machine hybrid modeling approach (case study: Karkheh Catchment, Iran) [PDF]

open access: yesEnvironmental Resources Research, 2020
In this study, a hybrid support vector machine–artificial flora algorithm method was developed to estimate the flow rate of Karkheh Catchment rivers using daily discharge statistics.
R. Dehghani   +3 more
doaj   +1 more source

Hybrid wavelet-gene expression programming and wavelet-support vector machine models for rainfall-runoff modeling

open access: yesWater Science and Technology, 2022
It is critical to use research methods to collect and regulate surface water to provide water while avoiding damage. Following accurate runoff prediction, principled planning for optimal runoff is implemented.
Potharlanka Jhansi Lakshmi   +4 more
doaj   +1 more source

Visual Attention-Based Image Watermarking

open access: yesIEEE Access, 2016
Imperceptibility and robustness are two complementary but fundamental requirements of any watermarking algorithm. Low strength watermarking yields high imperceptibility but exhibits poor robustness.
Deepayan Bhowmik   +2 more
doaj   +1 more source

A hybrid wavelet-Lyapunov exponent model for river water quality forecast

open access: yesJournal of Hydroinformatics, 2021
The use of spectral theory and chaos theory on river water quality modeling is reported in a very limited way. This study proposes a wavelet-maximum Lyapunov exponent (WMLE) hybrid model for river water quality dynamics, combining spectral theory and ...
Jiping Jiang   +5 more
doaj   +1 more source

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