Results 21 to 30 of about 137,983 (312)

Iterative thresholding for sparse approximations [PDF]

open access: yes, 2008
Sparse signal expansions represent or approximate a signal using a small number of elements from a large collection of elementary waveforms. Finding the optimal sparse expansion is known to be NP hard in general and non-optimal strategies such as ...
Blumensath, T.   +3 more
core   +1 more source

Detection thresholding using mutual information [PDF]

open access: yes, 2006
In this paper, we introduce a novel non-parametric thresholding method that we term Mutual-Information Thresholding. In our approach, we choose the two detection thresholds for two input signals such that the mutual information between the thresholded ...
Ó Conaire, Ciarán   +4 more
core   +2 more sources

Threshold Graph Limits and Random Threshold Graphs [PDF]

open access: yesInternet Mathematics, 2008
47 pages, 8 ...
Persi Diaconis   +2 more
openaire   +4 more sources

Shoreline Delineation from Synthetic Aperture Radar (SAR) Imagery for High and Low Tidal States in Data-Deficient Niger Delta Region

open access: yesJournal of Marine Science and Engineering, 2023
Satellite image analysis is a potentially powerful tool for monitoring coastal shoreline positions. This study explores the use of multi-temporal, dual-polarised Sentinel-1 GRD synthetic aperture radar (SAR) imagery with a spatial resolution of 10 m for ...
Emmanuel Chigozie Dike   +2 more
doaj   +1 more source

Anomaly Detection in Multichannel Data Using Sparse Representation in RADWT Frames

open access: yesMathematics, 2021
We introduce a new methodology for anomaly detection (AD) in multichannel fast oscillating signals based on nonparametric penalized regression. Assuming the signals share similar shapes and characteristics, the estimation procedures are based on the use ...
Daniela De Canditiis, Italia De Feis
doaj   +1 more source

Adversarial Thresholding Semi-Bandits [PDF]

open access: yes, 2020
The classical multi-armed bandit is one of the most common examples of sequential decision-making, either by trading-off between exploiting and exploring arms to maximise some payoff or purely exploring arms until the optimal arm is identified.
Bower, Craig
core  

Classification, Multiple Hypothesis Testing And Wavelet Thresholding Procedures With Applications [PDF]

open access: yes, 2006
[ITALIANO] Lo sviluppo delle metodologie statitistiche per l’analisi dati è generalmente collegato a progressi ottenuti in altri campi scientifici. Da un lato l’analisi statistica è spesso indirizzata a problemi reali, di conseguenza, il miglioramento ...
Cutillo, Luisa
core   +1 more source

IoT-Based Information System for Healthcare Application: Design Methodology Approach

open access: yesApplied Sciences, 2017
Over the last few decades, life expectancy has increased significantly. However, elderly people who live on their own often need assistance due to mobility difficulties, symptoms of dementia or other health problems.
Damian Dziak   +2 more
doaj   +1 more source

At the Threshold of Architecture [PDF]

open access: yesJournal of Art & Design Education, 2001
In structuring the programme of our interior design studio, we questioned two assumptions that are central to the discourse of modern architecture: the site being empty of its unique traits, images, stories; and the user being devoid of human subjectivities, perception, imagination, memory.
Altınyıldız, N., Nalbantoğlu, G. B.
openaire   +2 more sources

Cross-calibration of multiple optical instruments for the measurement of particle size distributions in water

open access: yesFrontiers in Marine Science
Particle size spectra, describing particle abundance as a function of size, are essential for understanding marine ecosystem structure and biogeochemical processes. The slopes of size spectra provide insights into ecosystem characteristics.
Marika Takeuchi   +7 more
doaj   +1 more source

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