Results 61 to 70 of about 2,551,481 (193)
SGIR-Tree: Integrating R-Tree Spatial Indexing as Subgraphs in Graph Database Management Systems
ISPRS International Journal of Geo-InformationEfficient spatial query processing in Graph Database Management Systems (GDBMSs) has become increasingly important owing to the prevalence of spatial graph data.
Juyoung Kim +4 more
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2DPR-Tree: Two-Dimensional Priority R-Tree Algorithm for Spatial Partitioning in SpatialHadoop
ISPRS International Journal of Geo-Information, 2018 Among spatial information applications, SpatialHadoop is one of the most important systems for researchers. Broad analyses prove that SpatialHadoop outperforms the traditional Hadoop in managing distinctive spatial information operations.
Ahmed Elashry +3 more
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Query recovery of short user queries: on query expansion with stopwords [PDF]
, 2010 User queries to search engines are observed to predominantly contain inflected content words but lack stopwords and capitalization. Thus, they often resemble natural language queries after case folding and stopword removal.
Gareth J.F. Jones +3 more
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Top-K Collective Spatial Keyword Queries
IEEE Access, 2019 With the advent of a large number of spatial-textual data, collective spatial keyword queries have been widely studied in recent years. However, the collective spatial keyword query studied so far usually looks for only a set of objects. In addition, the
Danni Su +4 more
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ISPRS International Journal of Geo-Information, 2020 Methods for the generation of indoor geographic information system (GIS) models based on building information modelling (BIM) models can promote the analysis and application of indoor GIS, avoiding the complexity of traditional indoor space collection ...
Qingxiang Chen, Jing Chen, Wumeng Huang
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Efficient Processing of Spatial Joins Using R-Trees [PDF]
, 1993 : In this paper, we show that spatial joins are very suitable to be processed on a parallel hardware platform. The parallel system is equipped with a so-called shared virtual memory which is well-suited for the design and implementation of parallel ...
Kriegel, Hans-Peter +5 more
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A personalized query method for spatial keywords in indoor environments
Computational Urban ScienceWith the rapid development of indoor Location Based Services (LBS), a growing volume of textual data is being generated in indoor environments. Consequently, indoor spatial keyword query holds significant potential for development in the coming years ...
Liping Zhang, Chunhong Li, Song Li
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Error-bounded and Number-bounded Approximate Spatial Query for Interactive Visualization
Open Geosciences, 2018 In the big data era, an enormous amount of spatial and spatiotemporal data are generated every day. However, spatial query result sets that satisfy a query condition are very large, sometimes over hundreds or thousands of terabytes.
Qiu Agen +3 more
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Semi-Supervised Image Classification based on a Multi-Feature Image Query Language [PDF]
The area of Content-Based Image Retrieval (CBIR) deals with a wide range of research disciplines. Being closely related to text retrieval and pattern recognition, the probably most serious issue to be solved is the so-called \semantic gap".
Pein, Raoul Pascal
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A Visual Approach to Semantic Query Design Using a Web-Based Graphical Query Designer
, 2008 Query formulation is a key aspect of information retrieval, contributing to both the efficiency and usability of many semantic applications. A number of query languages, such as SPARQL, have been developed for the Semantic Web; however, there are, as yet,
Kalfoglou, Yannis +5 more
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