Results 51 to 60 of about 5,483,277 (408)
A storage and access architecture for efficient query processing in spatial database systems [PDF]
, 1993 Due to the high complexity of objects and queries and also due to extremely large data volumes, geographic database systems impose stringent requirements on their storage and access architecture with respect to efficient query processing.
A. Hutflesz +7 more
core +3 more sources
DISCRIMINATION OF CULTURAL RELICS SIMILARITY BASED ON PHASH ALGORITHM AND SIFT OPERATOR [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 Among the immovable cultural relics such as grottoes, stone carvings of the same period usually show similar artistic styles and repetitive statues. Through the study of the similarity between cultural relics in the same period, we can have reference ...
W. Hua +7 more
doaj +1 more source
Land, 2021 Rapid urbanization has led vertical infrastructural growth in different countries with differing economic development levels and social systems. The two cities, Prague and Delhi, are the capital cities of their respective countries and have significant ...
Tarun Ghawana +2 more
doaj +1 more source
Coherence of linear and surface data: Methodological proposal from the example of road data [PDF]
arXiv, 2022 The real world and its geographic objects are modeled and represented in different spatial databases. Each of these databases provides only a partial description (in space and time) of the geographic objects represented. Sometimes, producers and users of databases need to connect several of them for updates or comparisons.
arxiv
SpatialNLI: A Spatial Domain Natural Language Interface to Databases Using Spatial Comprehension [PDF]
27th ACM SIGSPATIAL International Conference on Advances in
Geographic Information Systems (SIGSPATIAL '19), November 5-8, 2019, Chicago,
IL, USA, 2019 A natural language interface (NLI) to databases is an interface that translates a natural language question to a structured query that is executable by database management systems (DBMS). However, an NLI that is trained in the general domain is hard to apply in the spatial domain due to the idiosyncrasy and expressiveness of the spatial questions ...
arxiv +1 more source
PDBTM: Protein Data Bank of transmembrane proteins after 8 years [PDF]
, 2012 The PDBTM database (available at http://pdbtm .enzim.hu), the first comprehensive and up-to-date transmembrane protein selection of the Protein Data Bank, was launched in 2004.
Bass +33 more
core +1 more source
Energies, 2021 The main objective of this work is to develop a methodology for analyzing the quality of the voltage level in the distribution power grid to identify and reduce the violations of voltage limits through the proposition of optimal points for the allocation
José A. G. Cararo +6 more
doaj +1 more source
Direction-Aware Nearest Neighbor Query
IEEE Access, 2019 Although the direction aspect is as important as the distance aspect when retrieving spatial objects, the studies of direction-aware queries are limited. The direction-based surrounder query cannot guarantee good directional diversity.
Xi Guo, Xiaochun Yang
doaj +1 more source
A Hierarchical Spatial Network Index for Arbitrarily Distributed Spatial Objects
ISPRS International Journal of Geo-Information, 2021 The range query is one of the most important query types in spatial data processing. Geographic information systems use it to find spatial objects within a user-specified range, and it supports data mining tasks, such as density-based clustering. In many
Xiangqiang Min +3 more
doaj +1 more source
Efficient classification of billions of points into complex geographic regions using hierarchical triangular mesh [PDF]
, 2014 We present a case study about the spatial indexing and regional classification of billions of geographic coordinates from geo-tagged social network data using Hierarchical Triangular Mesh (HTM) implemented for Microsoft SQL Server.
Bodor, András +6 more
core +2 more sources