Results 231 to 240 of about 19,086 (267)
Some of the next articles are maybe not open access.
Query rewriting for semantic query optimization in spatial databases
GeoInformatica, 2019Query processing is an important challenge for spatial databases due to the use of complex data types that represent spatial attributes. In particular, due to the cost of spatial joins, several optimization algorithms based on indexing structures exist.
Eduardo Mella +3 more
openaire +1 more source
Integrated query processing strategies for spatial path queries
Proceedings 13th International Conference on Data Engineering, 2002Investigates optimization strategies for processing path queries with embedded spatial constraints, such as avoiding areas with certain characteristics. To resolve complex spatial constraints during path finding, we consider two decisions: (1) the spatial relation operations (e.g. intersection) between areas and links can be pre-processed or intermixed
Yun-Wu Huang +2 more
openaire +1 more source
Approximate Queries for Spatial Data
2013Approximation techniques for spatial data traditionally concern data capture and data representation issues. On the other hand, more recently developed approximation techniques refer to the query to be executed and not to data representation as in the the past monolithic Geographic Information Systems and for this reason they are called query-based ...
BELUSSI, Alberto +2 more
openaire +3 more sources
Integrating non-spatial preferences into spatial location queries
Proceedings of the 26th International Conference on Scientific and Statistical Database Management, 2014Increasing volumes of geo-referenced data are becoming available. This data includes so-called points of interest that describe businesses, tourist attractions, etc. by means of a geo-location and properties such as a textual description or ratings.
Qiang Qu 0001 +3 more
openaire +1 more source
Spatial Query Optimization With Learning
Proceedings of the VLDB EndowmentQuery optimization is a key component in database management systems (DBMS) and distributed data processing platforms. Recent research in the database community incorporated techniques from artificial intelligence to enhance query optimization. Various learning models have been extended and applied to the query optimization tasks, including query ...
Xin Zhang 0119, Ahmed Eldawy
openaire +1 more source
Forward/Backward and Content Private DSSE for Spatial Keyword Queries
IEEE Transactions on Dependable and Secure Computing, 2023Yinbin Miao, Ximeng Liu
exaly
Enabling Efficient Spatial Keyword Queries on Encrypted Data With Strong Security Guarantees
IEEE Transactions on Information Forensics and Security, 2021Yinbin Miao, Ximeng Liu, Wang Xiangyu
exaly
Continuous k Nearest Neighbor Queries over Large-Scale Spatial–Textual Data Streams
ISPRS International Journal of Geo-Information, 2020, Baoning Niu
exaly
Answering why-not questions on top-k augmented spatial keyword queries
Knowledge-Based Systems, 2021Yanhong Li, Wang Zhang, Changyin Luo
exaly