Results 171 to 180 of about 229 (216)
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2012
Continuous monitoring of queries over moving objects has become an important topic as it supports a wide range of useful mobile applications. A continuous skyline query involves both static and dynamic dimensions. In the dynamic dimension, the data object not only has a distance from the query object, but it also has a direction with respect to the ...
Eman El-Dawy +2 more
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Continuous monitoring of queries over moving objects has become an important topic as it supports a wide range of useful mobile applications. A continuous skyline query involves both static and dynamic dimensions. In the dynamic dimension, the data object not only has a distance from the query object, but it also has a direction with respect to the ...
Eman El-Dawy +2 more
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Skyline and reverse skyline query processing in SpatialHadoop
Data & Knowledge Engineering, 2019Abstract In this paper, we study the problem of skyline and reverse skyline computation using SpatialHadoop, an extension of Hadoop that enhances its capabilities with spatial awareness. The exploitation of spatial indexing structures and the spatial properties of data can exploit MapReduce-based methods by reducing the reading, writing ...
Christos Kalyvas, Manolis Maragoudakis
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Location-Dependent Skyline Query
The Ninth International Conference on Mobile Data Management (mdm 2008), 2008Given a set of data points with both spatial coordinates and non-spatial attributes, point a location-dependently dominates point b with respect to a query point q if a is closer to q than b and meanwhile a dominates b. A location- dependent skyline query (LDSQ) issued at point q is to retrieve all the points that are not location-dependently dominated
Baihua Zheng +2 more
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Maintenance of Range Skyline Query
2020 IEEE International Conference on Knowledge Graph (ICKG), 2020Skyline query has attracted much attention from the data management community. It is widely used in many practical applications, such as multi-criteria decision-making, product recommendations, and decision analysis. The range skyline query retrieves skyline results for each query point in the specified range, which means that users can set their ideal
Xiaoxue Li +3 more
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Proceedings of the 22nd ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2014
Given a set S of sites and a set O of objects in a metric space, the Optimal Location (OL) problem is about computing a location in the space where introducing a new site (e.g., a retail store) maximizes the number of the objects (e.g., customers) that would choose the new site as their "preferred" site among all sites.
Farnoush Banaei Kashani +2 more
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Given a set S of sites and a set O of objects in a metric space, the Optimal Location (OL) problem is about computing a location in the space where introducing a new site (e.g., a retail store) maximizes the number of the objects (e.g., customers) that would choose the new site as their "preferred" site among all sites.
Farnoush Banaei Kashani +2 more
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The Farthest Spatial Skyline Queries
Information Systems, 2013Pareto-optimal objects are favored as each of such objects has at least one competitive edge against all other objects, or ''not dominated''. Recently, in the database literature, skyline queries have gained attention as an effective way to identify such pareto-optimal objects. In particular, this paper studies the pareto-optimal objects in perspective
Gae-won You +3 more
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The σ-neighborhood skyline queries
Information Sciences, 2015Skyline queries have recently attracted considerable attention for their ability to return data points from a given dataset that are not dominated by any other points. This study extends the concept of skyline queries in the development of a ?-neighborhood skyline query (?-N skyline query).
Yi-Chung Chen, Chiang Lee
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2011
In recent years, Skyline query based on a multi-dimensional space has become a hot topic in the research of database technology according to its potential applications in data mining and visualization of databases. A variety of high-efficient Skyline query approaches is proposed, such as BNL (Blocked Nested Loop), NN (Nearest Neighbour) and BBS (Branch
Wei Yan 0002 +2 more
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In recent years, Skyline query based on a multi-dimensional space has become a hot topic in the research of database technology according to its potential applications in data mining and visualization of databases. A variety of high-efficient Skyline query approaches is proposed, such as BNL (Blocked Nested Loop), NN (Nearest Neighbour) and BBS (Branch
Wei Yan 0002 +2 more
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Materializing Distributed Skyline Queries
Proceedings of the 6th International Conference on Agents and Artificial Intelligence, 2014During the last decade, data management and storage have become increasingly distributed. Advanced query operators, such as skyline queries, are necessary in order to help users to manipulate the huge amount of available data by identifying a set of interesting data objects.
Samiha Brahimi +1 more
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Parallel Computation of Skyline Queries
2013 IEEE 21st Annual International Symposium on Field-Programmable Custom Computing Machines, 2013Due to stagnant clock speeds and high power consumption of commodity microprocessors, database vendors have started to explore massively parallel co-processors such as FPGAs to further increase performance. A typical approach is to push simple but compute-intensive operations (e.g., prefiltering, (de)compression) to FPGAs for acceleration.
Louis Woods +2 more
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