Scalable Processing of Spatial-Keyword Queries
Sorozatcím: Synthesis Lectures on Data Management;
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A termék adatai:
- Kiadó Morgan & Claypool Publishers
- Megjelenés dátuma 2019. február 28.
- Kötetek száma Hardback
- ISBN 9781681734897
- Kötéstípus Keménykötés
- Terjedelem116 oldal
- Méret 235x191 mm
- Súly 333 g
- Nyelv angol 0
Kategóriák
Rövid leírás:
Examines important applications of spatial-keyword data, and demonstrates the scale at which spatial-keyword data is being generated. This book also formalizes and classifies the various types of queries that execute over spatial-keyword data, and discusses important and desirable properties of spatial-keyword query languages.
TöbbHosszú leírás:
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.
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