Continuous Spatial Query Processing In Mobile Information Systems
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Author | : Shauli Sarmin Sumi |
Publisher | : |
Total Pages | : |
Release | : 2017 |
Genre | : |
ISBN | : |
Nowadays, many mobile applications provide location-based services that allow users to access location-related information from anywhere, whenever they desire. A moving user can issue queries to access information about moving or static objects. Continuous spatial query processing systems are used for this type of application. We propose two query processing strategies for location based services. The objectives of our strategies are to reduce: (1) the server workload, (2) the data transmission cost and (3) the query response time, for location-based services while providing an answer for a continuous region query. We compare our first strategy with a brute-force strategy and found that our strategy can significantly reduce the server workload and data transmission cost over the brute-force method. We compare our improved strategy with the original strategy and brute-force strategy. The experimental results show that the improved strategy achieves lower query response time than the original and brute-force strategy.
Author | : Ki-Joune Li |
Publisher | : Springer Science & Business Media |
Total Pages | : 318 |
Release | : 2005-12-07 |
Genre | : Computers |
ISBN | : 3540308482 |
This book constitutes the refereed proceedings of the 5th International Workshop on Web and Wireless Geographical Information Systems, W2GIS 2005, held in Lausanne, Switzerland in December 2005. The 25 revised full papers presented were carefully reviewed and selected from 70 submissions and cover a wide range of topics from web semantic and personalization, contextual representation and mapping to querying in mobile environment, to mobile networks and location-based services. The papers are organized in topical sections on mobile GIS and LBS, mapping and representation issues in Web and mobile GIS, mobile networks, querying in a mobile environment, context and personalization issues in Web and mobile GIS, Web GIS, and modeling for Web and mobile GIS.
Author | : Beng Chin Ooi |
Publisher | : Springer Science & Business Media |
Total Pages | : 220 |
Release | : 1990-11-28 |
Genre | : Computers |
ISBN | : 9783540534747 |
Very Good,No Highlights or Markup,all pages are intact.
Author | : Ahmed R. Mahmood |
Publisher | : Morgan & Claypool Publishers |
Total Pages | : 118 |
Release | : 2019-02-07 |
Genre | : Computers |
ISBN | : 1681734885 |
Text data that is associated with location data has become ubiquitous. A tweet is an example of this type of data, where the text in a tweet is associated with the location where the tweet has been issued. We use the term spatial-keyword data to refer to this type of data. Spatial-keyword data is being generated at massive scale. Almost all online transactions have an associated spatial trace. The spatial trace is derived from GPS coordinates, IP addresses, or cell-phone-tower locations. Hundreds of millions or even billions of spatial keyword objects are being generated daily. Spatial-keyword data has numerous applications that require efficient processing and management of massive amounts of spatial-keyword data. This book starts by overviewing some important applications of spatial-keyword data, and demonstrates the scale at which spatial-keyword data is being generated. Then, it formalizes and classifies the various types of queries that execute over spatial-keyword data. Next, it discusses important and desirable properties of spatial-keyword query languages that are needed to express queries over spatial-keyword data. As will be illustrated, existing spatial-keyword query languages vary in the types of spatial-keyword queries that they can support. There are many systems that process spatial-keyword queries. Systems differ from each other in various aspects, e.g., whether the system is batch-oriented or stream-based, and whether the system is centralized or distributed. Moreover, spatial-keyword systems vary in the types of queries that they support. Finally, systems vary in the types of indexing techniques that they adopt. This book provides an overview of the main spatial-keyword data-management systems (SKDMSs), and classifies them according to their features. Moreover, the book describes the main approaches adopted when indexing spatial-keyword data in the centralized and distributed settings. Several case studies of {SKDMSs} are presented along with the applications and query types that these {SKDMSs} are targeted for and the indexing techniques they utilize for processing their queries. Optimizing the performance and the query processing of {SKDMSs} still has many research challenges and open problems. The book concludes with a discussion about several important and open research-problems in the domain of scalable spatial-keyword processing.
Author | : Farzin Keykavoosamand |
Publisher | : |
Total Pages | : |
Release | : 2018 |
Genre | : |
ISBN | : |
There exists an increasing usage rate of location-based information from mobile devices, which requires new query processing strategies. One such strategy is a moving (continuous) region query in which a moving user continuously sends queries to a central server to obtain data or information. In this thesis, we introduce two strategies to process a spatial moving query over clustered data sets. Both strategies utilize a validity region approach on the client in order to minimize the number of queries that are sent to the server. We explore the use of a two-dimensional indexing strategy, as well as the use of Expectation Maximization (EM) and k-means clustering. Our experiments show that both strategies outperform a Baseline strategy where all queries are sent to the server, with respect to data transmission, response time, and workload costs.
Author | : J. Mark Ware |
Publisher | : Springer |
Total Pages | : 302 |
Release | : 2008-04-12 |
Genre | : Computers |
ISBN | : 3540769250 |
This book constitutes the refereed proceedings of the 7th International Symposium on Web and Wireless Geographical Information Systems, W2GIS 2007, held in Cardiff, UK, in November 2007. The 21 revised full papers presented were carefully reviewed and selected from 45 submissions. The papers provide an up-to-date review of advances in recent development of Web and wireless geographical information systems, and address a broad range of issues like conceptual and logical models for W2GIS.
Author | : Abdelkader Hameurlain |
Publisher | : Springer |
Total Pages | : 217 |
Release | : 2015-02-21 |
Genre | : Computers |
ISBN | : 3662464853 |
The LNCS journal Transactions on Large-Scale Data- and Knowledge-Centered Systems focuses on data management, knowledge discovery, and knowledge processing, which are core and hot topics in computer science. Since the 1990s, the Internet has become the main driving force behind application development in all domains. An increase in the demand for resource sharing across different sites connected through networks has led to an evolution of data- and knowledge-management systems from centralized systems to decentralized systems enabling large-scale distributed applications providing high scalability. Current decentralized systems still focus on data and knowledge as their main resource. Feasibility of these systems relies basically on P2P (peer-to-peer) techniques and the support of agent systems with scaling and decentralized control. Synergy between grids, P2P systems, and agent technologies is the key to data- and knowledge-centered systems in large-scale environments. This, the 18th issue of Transactions on Large-Scale Data- and Knowledge-Centered Systems, contains extended and revised versions of seven papers presented at the 24th International Conference on Database and Expert Systems Applications, DEXA 2013, held in Prague, in the Czech Republic, in August 2013. Following the conference, and two further rounds of reviewing and selection, five extended papers and two invited keynote papers were chosen for inclusion in this special issue. The subject areas covered include argumentation, e-government, business processes, predictive traffic estimation, semantic model integration, top-k query processing, uncertainty handling, graph comparison, community detection, genetic programming, and web services.
Author | : Leonard Barolli |
Publisher | : Springer |
Total Pages | : 1024 |
Release | : 2018-08-27 |
Genre | : Technology & Engineering |
ISBN | : 3319985302 |
This book presents the latest research findings and innovative theoretical and practical research methods and development techniques related to the emerging areas of information networking and their applications. Today’s networks and information systems are evolving rapidly, and there are several new trends and applications, such as wireless sensor networks, ad hoc networks, peer-to-peer systems, vehicular networks, opportunistic networks, grid and cloud computing, pervasive and ubiquitous computing, multimedia systems, security, multi-agent systems, high-speed networks, and web-based systems. These networks have to deal with the increasing number of users, provide support for different services, guarantee the QoS, and optimize the network resources, and as such there are numerous research issues and challenges that need to be considered and addressed.
Author | : Khalil, Ismail |
Publisher | : IGI Global |
Total Pages | : 626 |
Release | : 2006-05-31 |
Genre | : Computers |
ISBN | : 1591408687 |
"This handbook provides insight into the field of mobile multimedia and associated applications and services"--Provided by publisher.
Author | : Taniar, David |
Publisher | : IGI Global |
Total Pages | : 390 |
Release | : 2009-02-28 |
Genre | : Computers |
ISBN | : 160566233X |
Provides developments and research, as well as current innovative activities in data warehousing and mining, focusing on the intersection of data warehousing and business intelligence.