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Re-examining the potential effectiveness of interactive query expansion [PDF]
, 2003 Much attention has been paid to the relative effectiveness of interactive query expansion versus automatic query expansion. Although interactive query expansion has the potential to be an effective means of improving a search, in this paper we show that,
Ruthven, I.
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Research Overview on Spatial Nearest Neighbor and Its Variant Queries [PDF]
Jisuanji kexue yu tansuoThe nearest neighbor query and its extended variants are crucial topics in the field of spatial databases and have been widely applied in geographic information systems, pattern recognition, decision support, urban planning, and many other fields.
WANG Luqi, GAO Jixun, TANG Hao, LI Song, ZHAO Yuanyuan
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Bidirectional k-nearest neighbor spatial crowdsourcing allocation protocol based on edge computing [PDF]
PeerJ Computer Science, 2023 Spatial crowdsourcing refers to the allocation of crowdsourcing workers to each task based on location information. K-nearest neighbor technology has been widely applied in crowdsourcing applications for crowdsourcing allocation. However, there are still
Jing Zhang +3 more
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A VOMR-TREE BASED PARALLEL RANGE QUERY METHOD ON DISTRIBUTED SPATIAL DATABASE [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 Spatial index impacts upon the efficiency of spatial query seriously in distributed spatial database. In this paper, we introduce a parallel spatial range query algorithm, based on VoMR-tree index, which incorporates Voronoi diagrams into MR-tree ...
Z. Fu, Z. Fu, S. Liu
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Sensors, 2018 With the rapid development of mobile devices and sensors, effective searching methods for big spatial data have recently received a significant amount of attention.
Bumjoon Jo, Sungwon Jung
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Resource Capacitated Collective Travel Planning in Spatial Databases
IEEE Access, 2020 The widespread use of GPS smart devices has allowed users to collect location information in real-time, leading to the emergence of ride-sharing services based on users' locations. Ride-sharing services have become effective services that reduce the cost
Junkyu Lee, Seog Park
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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
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Constrained Query Answering [PDF]
, 1994 Traditional answering methods evaluate queries only against positive and definite knowledge expressed by means of facts and deduction rules. They do not make use of negative, disjunctive or existential information.
Bry, François, Demolombe, R.
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A Big Spatial Data Processing Framework Applying to National Geographic Conditions Monitoring [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 In this paper, a novel framework for spatial data processing is proposed, which apply to National Geographic Conditions Monitoring project of China. It includes 4 layers: spatial data storage, spatial RDDs, spatial operations, and spatial query language.
F. Xiao
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A Unified Approach to Spatial Proximity Query Processing in Dynamic Spatial Networks
Sensors, 2021 Nearest neighbor (NN) and range (RN) queries are basic query types in spatial databases. In this study, we refer to collections of NN and RN queries as spatial proximity (SP) queries.
Hyung-Ju Cho
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