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Other literature type . 2023
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Presentation . 2023
License: CC BY
Data sources: Datacite
ZENODO
Presentation . 2023
License: CC BY
Data sources: Datacite
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Compression of Geospatial Data with Varying Information Density

Authors: Fatihi, Ayoub; Klöwer, Milan; Schulz, Hauke; Razinger, MIha; Dominguez, Juan José;

Compression of Geospatial Data with Varying Information Density

Abstract

Geospatial data can vary in its information density from one part of the world to another. A dataset containing streets will be very dense in cities but contains little information in remote places like the Alps or even the ocean. The same is also true for datasets about the ocean or the atmosphere. The variability of sea surface temperatures and currents is much larger in the vicinity of the golf stream than in the middle of the Atlantic basin. This variability might also change in time. A hurricane, for example, has a lot of variability in winds, temperature and rain rates, and travels in addition across entire ocean basins. The challenge of this project is to improve `xbitinfo` to preserve the natural variability of these features but not to save random noise where the real information density is rather low. This means in particular that the number of bits needed to preserve in compression changes with location. A hurricane has a different information density than a same-sized area in the steadily blowing trade-wind regimes. Compressibility of climate data therefore can change drastically in time and space, which we want to exploit. Currently in the bitinformation framework, to preserve all real information, the maximum information content calculated by `xbitinfo` needs to be used for the entire dataset. However, bitinformation can also be calculated on subsets, such that the 'boring' parts can therefore be more efficiently compressed.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green