Continuous skyline queries in distributed environment
نویسندگان
چکیده
منابع مشابه
Continuous skyline queries on multicore architectures
The emergence of real-time decision-making applications in domains like high-frequency trading, emergency management and service level analysis in communication networks, has led to the definition of new classes of queries. Skyline queries are a notable example. Their results consist of all the tuples whose attribute vector is not dominated (in the Pareto sense) by one of any other tuple. Becau...
متن کاملProcessing of Aggregate Continuous Queries in a Distributed Environment
Data Stream Management Systems (DSMSs) performing on-line analytics rely on the efficient execution of large numbers of Aggregate Continuous Queries (ACQs). In this paper, we study the problem of generating high quality execution plans of ACQs in DSMSs deployed on multi-node (multi-core and multi-processor) distributed environments. Towards this goal, we classify optimizers based on how they pa...
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Skyline queries in road networks have received much attention because of their wide applications in LBS. Due to the increasing demands for services, skyline queries for moving objects in road networks which involve not only static attributes, but also dynamic ones, become more important. This paper studies a problem of how to process the continuous skyline query for moving objects in road netwo...
متن کاملSkyline Queries
DEFINITION: Given a set of points p1, p2, ......., pn, the skyline query returns a set of points P, called as the skyline points, such that any point pi ∈ P is not dominated by any other point in the dataset. A point p1 dominates another point p2, if p1 is not worse than p2 in all dimensions and p1 is better than p2 in at least one dimension. In other words, a point p1 dominates another point p...
متن کاملGeometry-Based Distributed Spatial Skyline Queries in Wireless Sensor Networks
Algorithms for skyline querying based on wireless sensor networks (WSNs) have been widely used in the field of environmental monitoring. Because of the multi-dimensional nature of the problem of monitoring spatial position, traditional skyline query strategies cause enormous computational costs and energy consumption. To ensure the efficient use of sensor energy, a geometry-based distributed sp...
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ژورنال
عنوان ژورنال: International Journal of Data Science
سال: 2019
ISSN: 2053-0811,2053-082X
DOI: 10.1504/ijds.2019.10019816