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A survey of official online sources of high-quality free-of-charge geospatial data for maritime geographic information systems applications.
Christos Kalyvas
Athanasios Kokkos
Theodoros Tzouramanis
Published in:
Inf. Syst. (2017)
Keyphrases
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geospatial data
geographic information systems
spatial data
online sources
spatial databases
data management
social media
r tree
website
information sources
data analysis
spatial objects
search engine
spatial relationships
multiple sources
closely related
text mining
information extraction
data mining