Results 11 to 20 of about 3,193,900 (299)
Fuzzy Reliability in Spatial Databases [PDF]
Advances in Fuzzy Systems, 2013 Today it is very difficult to evaluate the quality of spatial databases, mainly for the heterogeneity of input data. We define a fuzzy process for evaluating the reliability of a spatial database: the area of study is partitioned in isoreliable zones ...
Ferdinando Di Martino, Salvatore Sessa
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, 2009 Databases are computer systems designed to store information in a systematic way so that their contents can be easily accessed, managed, changed, and augmented. Spatial databases are such systems designed specifically to include data with spatial attributes, such as geographical location, distance, and extent.
Winstanley, Adam C.
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Semantics in spatial databases
, 1998 In this paper we discuss two data models for spatial database systems: the linear data model and the topological data model. Both can be used to model a wide range of applications. The linear data model is particularly suited to model spatial database applications in which exact geometrical information is required and in which this information can be ...
Bart Kuijpers +2 more
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, 2017 Spatial databases maintain space information which is appropriate for applications where there is need to monitor the position of an object or event over space. Spatial databases describe the fundamental representation of the object of a dataset that comes from spatial or geographic entities.
Grace L. Samson +3 more
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, 2007 Spatial database research has continued to advance greatly since three decades ago, addressing the growing data management and analysis needs of spatial applications. This research has produced a taxonomy of models for space, conceptual models, spatial query languages and query processing, spatial file organization and indexes, and spatial data mining.
Gandhi, Vijay +2 more
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On spatial database integration [PDF]
International Journal of Geographical Information Science, 1998 This paper investigates the problems that arise when application requirements dictate that autonomous spatial databases be integrated into a federated one. The paper focuses on the most critical issues raised by the integration of databases of different scales.
Devogele, Thomas +2 more
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Linear separability in spatial databases [PDF]
Knowledge and Information Systems, 2017 Given two point sets $R$ and $B$ in the plane, with cardinalities $m$ and $n$, respectively, and each set stored in a separate R-tree, we present an algorithm to decide whether $R$ and $B$ are linearly separable. Our algorithm exploits the structure of the R-trees, loading into the main memory only relevant data, and runs in $O(m\log m + n\log n)$ time
Claudio Torres +2 more
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Spatial searching in geometric databases [PDF]
Proceedings. Fourth International Conference on Data Engineering, 2003 A principle is presented for transforming suitable index structures for points into index structures for k-dimensional intervals. In many applications, these intervals serve as simple geometric keys for nonzero-size objects. The transformation fully preserves the advantages of the selected index structure for points, such as efficient update and ...
Six, Hans-Werner, Widmayer, Peter
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An Investigation in Efficient Spatial Patterns Mining [PDF]
The technical progress in computerized spatial data acquisition and storage results in the growth of vast spatial databases. Faced with large amounts of increasing spatial data, a terminal user has more difficulty in understanding them without the ...
Wang, Lizhen
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Approximate MaxRS in spatial databases [PDF]
Proceedings of the VLDB Endowment, 2013 In the maximizing range sum (MaxRS) problem, given (i) a setPof 2D points each of which is associated with a positive weight, and (ii) a rectanglerof specific extents, we need to decide where to placerin order to maximize the covered weight ofr- that is, the total weight of the data points covered byr.
Yufei Tao 0001 +3 more
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