Results 31 to 40 of about 3,471,337 (333)
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
Top-k Spatial Preference Queries [PDF]
2007 IEEE 23rd International Conference on Data Engineering, 2007 A spatial preference query ranks objects based on the qualities of features in their spatial neighborhood. For example, consider a real estate agency office that holds a database with available flats for lease. A customer may want to rank the flats with respect to the appropriateness of their location, defined after aggregating the qualities of other ...
Mamoulis, N, Vaitis, M, Dai, X, Yiu, ML
openaire +2 more sources
Continuous Spatial Query Processing
ACM Computing Surveys, 2018 In the past decade, positioning system-enabled devices such as smartphones have become most prevalent. This functionality brings the increasing popularity of location-based services in business as well as daily applications such as navigation, targeted ...
Jianzhong Qi +4 more
semanticscholar +1 more source
Architecting a Query Compiler for Spatial Workloads
SIGMOD Conference, 2020 Modern location-based applications rely extensively on the efficient processing of spatial data and queries. Spatial query engines are commonly engineered as an extension to a relational database or a cluster-computing framework.
Ruby Y. Tahboub, Tiark Rompf
semanticscholar +1 more source
Privacy-Protected Route-Based Spatial-Textual Location Search in Road Networks
IEEE Access, 2019 Location search and recommendation have received significant attention in recent years. To protect the users' privacy, we propose and study a novel privacy-protected route-based spatial-textual location (PPRSTL) query in road networks.
Hongwei Liu +3 more
doaj +1 more source
ISPRS International Journal of Geo-Information, 2023 A new spatial keyword group query method is proposed in this paper to address the existing issue of user privacy leakage and exclusion of preferences in road networks. The proposed query method is based on the IGgram-tree index and minimum hash set.
Liping Zhang, Jing Li, Song Li
doaj +1 more source
Query processing of geometric objects with free form boundarie sin spatial databases [PDF]
, 1993 The increasing demand for the use of database systems as an integrating factor in CAD/CAM applications has necessitated the development of database systems with appropriate modelling and retrieval capabilities.
Fahldiek, Andreas +3 more
core +2 more sources
An effective algorithm for spatial query using spatial adaptive grid index filter [PDF]
, 2011 IEEE Geoscience and Remote Sensing Society (IEEE GRSS); East China Norm. Univ., Sch. Resour. Environ. Sci.; Shanghai Urban Dev. Inf. Res. Cent.; The Geographical Society of Shanghai; East China Univ. Sci. Technol., Bus.
Lu, Hao(卢浩) +4 more
core +2 more sources
ISPRS Int. J. Geo Inf., 2017 Geospatial big data analysis (GBDA) is extremely significant for time-constraint applications such as disaster response. However, the time-constraint analysis is not yet a trivial task in the cloud computing environment. Spatial query processing (SQP) is
Wei Huang +3 more
semanticscholar +1 more source
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
doaj +1 more source