Results 11 to 20 of about 1,265,945 (262)

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

Spatial Data Generators

open access: yes, 2022
9 ...
Tin Vu   +3 more
openaire   +2 more sources

SPATIAL AND TEMPORAL VARIATION OF LAND SURFACE TEMPERATURE IN FUJIAN PROVINCE FROM 2001 TO 2015 [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Land surface temperature (LST) is an essential parameter in the physics of land surface processes. The spatiotemporal variations of LST on the Fujian province were studied using AQUA Moderate Resolution Imaging Spectroradiometer LST data. Considering the
Y. Li, X. Wang, Z. Ding
doaj   +1 more source

RESEARCH ON INTEGRATED STATIC AND DYNAMIC GEOMETRIC CALIBRATION TECHNOLOGY FOR OPTICAL SURVEYING AND MAPPING SATELLITES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
As the satellite latitude and camera temperature changes, temperature distortion in orbit makes the optical axis of the star sensor drifts slowly in the satellite body coordinate system, and the attitude measurement system contains low frequency errors ...
Y. Wang, X. Hu, G. Xie
doaj   +1 more source

Proportionality on Spatial Data with Context

open access: yesACM Transactions on Database Systems, 2023
More often than not, spatial objects are associated with some context, in the form of text, descriptive tags (e.g., points of interest, flickr photos), or linked entities in semantic graphs (e.g., Yago2, DBpedia). Hence, location-based retrieval should be extended to consider not only the locations but also the context of the objects, especially when ...
Georgios John Fakas   +1 more
openaire   +2 more sources

COD Optimization Prediction Model Based on CAWOA-ELM in Water Ecological Environment

open access: yesJournal of Chemistry, 2021
The change of water quality can reflect the important indicators of ecological environment measurement. Sewage discharge is an important factor causing environmental pollution.
Lili Jiang   +10 more
doaj   +1 more source

Automatic Landform Recognition from the Perspective of Watershed Spatial Structure Based on Digital Elevation Models

open access: yesRemote Sensing, 2021
Landform recognition is one of the most significant aspects of geomorphology research, which is the essential tool for landform classification and understanding geomorphological processes.
Siwei Lin, Nan Chen, Zhuowen He
doaj   +1 more source

CONSTRUCTION AND ANALYSIS OF LONG-TERM SURFACE TEMPERATURE DATASET IN FUJIAN PROVINCE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Land surface temperature (LST) is a key parameter of land surface physical processes on global and regional scales, linking the heat fluxes and interactions between the ground and atmosphere.
W. E. Li, X. Q. Wang, H. Su
doaj   +1 more source

A SIMPLE CLOUD DETECTION METHOD FOR GF-1 WFV IMAGERY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Identification of clouds in optical images is often a necessary step toward their use. However, aimed at the cloud detection methods used on GF-1 is relatively less.
L. L. Jia, X. Q. Wang
doaj   +1 more source

A Proposal for Streamlining 3D Digital Cadastral Data Lifecycle

open access: yesLand, 2021
In urban areas, managing the lifecycle of land and property data related to interlocked and intertwined structures and infrastructure services is a grand challenge for cadastral systems.
Hamed Olfat   +5 more
doaj   +1 more source

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