Works (18)
Updated: August 28th, 2023 21:16
2023 article
Estimating atmospheric motion winds from satellite image data using space-time drift models
Sahoo, I., Guinness, J., & Reich, B. J. J. (2023, July 6). ENVIRONMETRICS, Vol. 7.
author keywords: asymmetry; derived motion winds; GOES-15; local maximum likelihood estimation; spatial smoothing; spatio-temporal processes
onlinelibrary.wiley.com (publisher PDF)
UN Sustainable Development Goal Categories
2. Zero Hunger
(Web of Science)
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, ORCID
Added: July 19, 2023
2022 journal article
<p>Spatial statistical modeling of arsenic accumulation in microsites of diverse soils</p>
GEODERMA, 411.
author keywords: Trace elements; Reactive microsites; Correlation; Pedogenic environments; Spatial heterogeneity; Soil complexity
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
6. Clean Water and Sanitation
(Web of Science)
15. Life on Land
(OpenAlex)
Sources: Web Of Science, ORCID
Added: May 31, 2022
2022 journal article
Geostatistical modeling of positive-definite matrices: An application to diffusion tensor imaging
BIOMETRICS, 78(2), 548–559.
author keywords: Cholesky decomposition; diffusion tensor imaging; geostatistical modeling; positive‐ definite matrix; spatial random fields; spatial Wishart process
MeSH headings : Computer Simulation; Diffusion Tensor Imaging; Normal Distribution; Stochastic Processes
TL;DR:
An approximation method is proposed to obtain a feasible Cholesky decomposition model, which is shown to be asymptotically equivalent to the spatial Wishart process model and to produce reliable inference and improved performance, compared to other methods.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
Sources: Web Of Science, ORCID
Added: March 8, 2021
2021 article
Spatial Shrinkage Via the Product Independent Gaussian Process Prior
Roy, A., Reich, B. J., Guinness, J., Shinohara, R. T., & Staicu, A.-M. (2021, June 16). JOURNAL OF COMPUTATIONAL AND GRAPHICAL STATISTICS, Vol. 6.
author keywords: Bayesian; High dimension; Image regression; Multiple sclerosis; Shrinkage; Spatial data analysis
TL;DR:
An efficient computation algorithm based on spectral methods is developed to model continuous signals that are sparse and piecewise-smooth as the product of independent Gaussian processes with a smooth covariance kernel for sparse signal detection on a spatial domain.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID
Added: July 12, 2021
2020 journal article
BASELINE DRIFT ESTIMATION FOR AIR QUALITY DATA USING QUANTILE TREND FILTERING
ANNALS OF APPLIED STATISTICS, 14(2), 585–604.
author keywords: Air quality; nonparametric quantile regression; trend estimation
TL;DR:
The model provides better quantile trend estimates than existing methods and improves signal classification of low-cost air quality sensor output and proposes a parallelizable alternating direction method of moments (ADMM) algorithm to handle the computational challenge posed by very long time series.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID
Added: July 20, 2020
2019 journal article
A TEST FOR ISOTROPY ON A SPHERE USING SPHERICAL HARMONIC FUNCTIONS
STATISTICA SINICA, 29(3), 1253–1276.
author keywords: Anisotropy; spatial statistics; spherical harmonic representation
UN Sustainable Development Goal Categories
2. Zero Hunger
(Web of Science)
Sources: Web Of Science, ORCID
Added: July 29, 2019
2019 journal article
Multi-element effects on arsenate accumulation in a geochemical matrix determined using mu-XRF, mu-XANES and spatial statistics
JOURNAL OF SYNCHROTRON RADIATION, 26, 1967–1979.
author keywords: reactive microsites; multi-component complexity; arsenic; partial correlation; spatial regression
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
6. Clean Water and Sanitation
(Web of Science)
15. Life on Land
(OpenAlex)
Sources: Web Of Science, ORCID
Added: February 3, 2020
2018 journal article
Compression and Conditional Emulation of Climate Model Output
Journal of the American Statistical Association, 113(521), 56–67.
author keywords: Gaussian process; Half-spectral; Nonstationary; Spatial-temporal data; SPDE
TL;DR:
A statistical compression and decompression algorithm based on storing a set of summary statistics as well as a statistical model describing the conditional distribution of the full dataset given the summary statistics is proposed.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger
(Web of Science)
Source: Crossref
Added: February 24, 2020
2018 journal article
Fully Bayesian spectral methods for imaging data
BIOMETRICS, 74(2), 645–652.
author keywords: Functional connectivity; Markov chain Monte Carlo; Matern correlation; Shrinkage priors; Spherical harmonics
MeSH headings : Alzheimer Disease / diagnostic imaging; Bayes Theorem; Case-Control Studies; Cerebral Cortex / diagnostic imaging; Cerebral Cortex / pathology; Computer Simulation; Data Interpretation, Statistical; Datasets as Topic; Diagnostic Imaging / methods; Humans; Markov Chains; Monte Carlo Method; Spectrum Analysis
TL;DR:
This work proposes a method that accounts for nonstationarity, functional connectivity of distant regions of interest, and local signals, and can be applied to large multi‐subject datasets using spectral methods combined with Markov Chain Monte Carlo sampling, and applies the new approach to study associations between cortical thickness and Alzheimer's disease.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID
Added: October 16, 2018
2018 journal article
Permutation and Grouping Methods for Sharpening Gaussian Process Approximations
TECHNOMETRICS, 60(4), 415–429.
author keywords: Conditional simulation; Kriging; Parallel computation; Spatial-temporal data; Vecchia's approximation
TL;DR:
It is demonstrated the surprising result that random orderings can give dramatically sharper approximations than default coordinate-based orderings, including tapered covariances and stochastic partial differential equations.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger
(Web of Science)
Source: Web Of Science
Added: February 18, 2019
2018 journal article
Space-Time Geostatistical Assessment of Hypoxia in the Northern Gulf of Mexico
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 52(21), 12484–12493.
MeSH headings : Gulf of Mexico; Humans; Hypoxia; Oxygen; Seasons; Water
TL;DR:
An innovative space-time geostatistical model and data collected by multiple research organizations are used to estimate bottom-water dissolved oxygen concentrations and hypoxic area across summers from 1985 to 2016, finding that 27% of variability in BWDO is explained by deterministic trends with location, depth, and date, while correlated stochasticity accounts for 62% of observational variance.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action
(Web of Science)
14. Life Below Water
(Web of Science; OpenAlex)
Sources: Web Of Science, ORCID
Added: December 3, 2018
2017 journal article
An evolutionary spectrum approach to incorporate large-scale geographical descriptors on global processes
JOURNAL OF THE ROYAL STATISTICAL SOCIETY SERIES C-APPLIED STATISTICS, 66(2), 329–344.
author keywords: Axial symmetry; Climate output compression; Evolutionary spectrum; Global space-time model; Land-ocean non-stationarity
TL;DR:
An evolutionary spectrum approach is proposed that can account for different regimes across the Earth's geography and results in a more general and flexible class of models that vastly outperforms axially symmetric models and captures longitudinal patterns that would otherwise be assumed constant.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger
(Web of Science)
Source: Web Of Science
Added: August 6, 2018
2017 journal article
Circulant Embedding of Approximate Covariances for Inference From Gaussian Data on Large Lattices
JOURNAL OF COMPUTATIONAL AND GRAPHICAL STATISTICS, 26(1), 88–97.
author keywords: Conditional simulation; Fast Fourier transform; Gaussian process; Kriging
TL;DR:
This work proposes the use of a discrete spectral approximation to allow for the implementation of Markov chain Monte Carlo and Monte Carlo expectation–maximization methods on smaller embedding lattices, and demonstrates that the approximate methods are also faster to compute.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger
(Web of Science)
Source: Web Of Science
Added: August 6, 2018
2017 journal article
Optimal Seed Deployment Under Climate Change Using Spatial Models: Application to Loblolly Pine in the Southeastern US
Journal of the American Statistical Association, 112(519), 909–920.
UN Sustainable Development Goal Categories
13. Climate Action
(OpenAlex)
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
2016 journal article
Isotropic covariance functions on spheres: Some properties and modeling considerations
Journal of Multivariate Analysis, 143, 143–152.
author keywords: Kriging; Fourier series; Positive definite functions
TL;DR:
This paper defines the notion of and proves a characterization theorem for m times mean square differentiable processes on d -dimensional spheres and proves that the resulting sphere-restricted process retains its differentiability properties, which has the important implication that the Matern family retains its full range of smoothness when applied to spheres so long as Euclidean distance is used.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger
(Web of Science)
Source: Crossref
Added: February 24, 2020
2015 journal article
Likelihood approximations for big nonstationary spatial temporal lattice data
Statistica Sinica, 25(1), 329–349.
Source: NC State University Libraries
Added: August 6, 2018
2014 journal article
Multivariate spatial modeling of conditional dependence in microscale soil elemental composition data
Spatial Statistics, 9(C), 93–108.
Contributors: n, M. Fuentes n, D. Hesterberg n & M. Polizzotto n
UN Sustainable Development Goal Categories
15. Life on Land
(OpenAlex)
Sources: Crossref, ORCID
Added: October 26, 2019
2013 journal article
INTERPOLATION OF NONSTATIONARY HIGH FREQUENCY SPATIAL-TEMPORAL TEMPERATURE DATA
ANNALS OF APPLIED STATISTICS, 7(3), 1684–1708.
author keywords: Nonstationary process; spatial-temporal modeling; evolutionary spectrum; spatial-temporal jumps
UN Sustainable Development Goal Categories
2. Zero Hunger
(Web of Science)
13. Climate Action
(OpenAlex)
Source: Web Of Science
Added: August 6, 2018
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