Results 31 to 40 of about 4,369,639 (344)

Spatial Data Analysis

open access: yesAnnual Review of Public Health, 2016
With increasing accessibility to geographic information systems (GIS) software, statisticians and data analysts routinely encounter scientific data sets with geocoded locations. This has generated considerable interest in statistical modeling for location-referenced spatial data. In public health, spatial data routinely arise as aggregates over regions,
openaire   +4 more sources

Learned Spatial Data Partitioning

open access: yesProceedings of the Sixth International Workshop on Exploiting Artificial Intelligence Techniques for Data Management, 2023
Due to the significant increase in the size of spatial data, it is essential to use distributed parallel processing systems to efficiently analyze spatial data. In this paper, we first study learned spatial data partitioning, which effectively assigns groups of big spatial data to computers based on locations of data by using machine learning ...
Keizo Hori   +4 more
openaire   +2 more sources

Refining Coarse-grained Spatial Data using Auxiliary Spatial Data Sets with Various Granularities

open access: yes, 2019
We propose a probabilistic model for refining coarse-grained spatial data by utilizing auxiliary spatial data sets. Existing methods require that the spatial granularities of the auxiliary data sets are the same as the desired granularity of target data.
Iwata, Tomoharu   +5 more
core   +1 more source

Human Clustering Based on Graph Embedding and Space Functions of Trajectory Stay Points on Campus

open access: yesApplied Sciences
Spatial big data about human mobility have been employed intensively in understanding human spatial activity patterns, which is a central topic in many applications.
Ke Xie   +4 more
doaj   +1 more source

Spatial interpolation of high-frequency monitoring data

open access: yes, 2009
Climate modelers generally require meteorological information on regular grids, but monitoring stations are, in practice, sited irregularly. Thus, there is a need to produce public data records that interpolate available data to a high density grid ...
Stein, Michael L.
core   +1 more source

Interpolation of nonstationary high frequency spatial-temporal temperature data [PDF]

open access: yes, 2013
The Atmospheric Radiation Measurement program is a U.S. Department of Energy project that collects meteorological observations at several locations around the world in order to study how weather processes affect global climate change.
Guinness, Joseph, Stein, Michael L.
core   +1 more source

Scene Classification of Remote Sensing Images Based on Saliency Dual Attention Residual Network

open access: yesIEEE Access, 2020
Scene classification of high-resolution Remote Sensing Images (RSI) is one of basic challenges in RSI interpretation. Existing scene classification methods based on deep learning have achieved impressive performances.
Dongen Guo, Ying Xia, Xiaobo Luo
doaj   +1 more source

Regularized Principal Component Analysis for Spatial Data

open access: yes, 2016
In many atmospheric and earth sciences, it is of interest to identify dominant spatial patterns of variation based on data observed at $p$ locations and $n$ time points with the possibility that $p>n$. While principal component analysis (PCA) is commonly
Huang, Hsin-Cheng, Wang, Wen-Ting
core   +2 more sources

Spatial data stream multiplexing scheme for high-throughput WLANs [PDF]

open access: yes, 2008
A novel scheme using spatial data stream multiplexing (SDSM) in the upcoming multiple-input multipleoutput (MIMO)-based IEEE 802.11n physical layer is proposed.
Gravalos, AG   +3 more
core   +1 more source

Moving Towards a Single Smart Cadastral Platform in Victoria, Australia

open access: yesISPRS International Journal of Geo-Information, 2020
Various jurisdictions are currently in the process of reforming their cadastral systems to achieve a smart and multidimensional system that provides a range of land administration services to the wider community.
Hamed Olfat   +7 more
doaj   +1 more source

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