Results 21 to 30 of about 914,999 (265)
Copulas with Prescribed Correlation Matrix [PDF]
, 2015 1 Foreword Marc Yor was also an explorer in the jungle of probability distributions, either in discovering a new species, or in landing on an unexpected simple law after a difficult trip on stochastic calculus: we remember his enthousiam after proving that ∞ 0 exp(2B(t) − 2st)dt −1 is gamma distributed with shape parameter s ('The first natural ...
Devroye, Luc, Letac, Gérard
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Bounds for the Distance to the Nearest Correlation Matrix [PDF]
SIAM Journal on Matrix Analysis and Applications, 2016 Summary: In a wide range of practical problems correlation matrices are formed in such a way that, while symmetry and a unit diagonal are ensured, they may lack semidefiniteness. We derive a variety of new upper bounds for the distance from an arbitrary symmetric matrix to the nearest correlation matrix.
Nicholas J. Higham, Natasa Strabic
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Extremal correlators and random matrix theory [PDF]
Journal of High Energy Physics, 2021 Abstract We study the correlation functions of Coulomb branch operators of four-dimensional $$ \mathcal{N} $$ N = 2 Superconformal Field Theories (SCFTs). We focus on rank-one theories, such as the SU(2) gauge theory with four fundamental hypermultiplets.
Grassi, Alba +2 more
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Frequency-Resolved Functional Connectivity: Role of Delay and the Strength of Connections
Frontiers in Neural Circuits, 2021 The brain functional network extracted from the BOLD signals reveals the correlated activity of the different brain regions, which is hypothesized to underlie the integration of the information across functionally specialized areas.
Abolfazl Ziaeemehr +2 more
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Applied Sciences, 2019 Relatively few studies have focused on systematically mining the patent databases of different countries. This study mines the databases of the main ‘technological powers’ using several methods.
Cheng-Chien Hsu, Zheng-Yun Zhuang
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Frontiers in Energy ResearchTo address the self-healing challenges caused by increasingly complex distribution network topologies after faults, this study proposes an integrated area division scheme for distribution networks.
Pang Jinian +4 more
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Correlation Matrix-Based Fusion of Hyperspectral and Multispectral Images
Remote Sensing, 2023 The fusion of the hyperspectral image (HSI) and the multispectral image (MSI) is commonly employed to obtain a high spatial resolution hyperspectral image (HR-HSI); however, existing methods often involve complex feature extraction and optimization steps,
Hong Lin +5 more
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Journal of Marine Science and Engineering, 2023 The hydrographic survey is an important technology for improving maritime safety, especially in coastal waters. The accuracy of nautical charts and navigation publications is known to be directly related to hydrographic survey data. Therefore, this paper
Ivana Golub Medvešek +3 more
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Another look at matrix correlations
Bioinformatics, 2019 Abstract Motivation High throughput technologies are widely employed in modern biomedical research. They yield measurements of a large number of biomolecules in a single experiment. The number of experiments usually is much smaller than the number of measurements in each experiment.
Ahmad Borzou +2 more
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Assessment of cognitive biases in augmented reality: Beyond eye tracking.
Journal of Eye Movement Research, 2022 We study an individual’s propensity for rational thinking; the avoidance of cognitive biases (unconscious errors generated by our mental simplification methods) using a novel augmented reality (AR) platform.
Piotr Słowiński +5 more
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