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Data management of moving objects.

Chon, Hae Don.

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Data management of moving objects.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Data management of moving objects./
作者:	Chon, Hae Don.
面頁冊數:	128 p.
附註:	Chairs: Divyakant Agrawal; Amr El Abbadi.
Contained By:	Dissertation Abstracts International63-09B
標題:	Computer Science -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3064706
ISBN:	0493838236

Data management of moving objects.
Chon, Hae Don.

Data management of moving objects. - 128 p.

Chairs: Divyakant Agrawal; Amr El Abbadi.

Thesis (Ph.D.)--University of California, Santa Barbara, 2002.

With the growing popularity of mobile computing devices and wireless communications, managing dynamically changing information about moving objects has become feasible. There are several applications that will benefit from data management for moving objects. The time-dependent shortest path problem in the context of transportation is one such application. In this dissertation, a moving object is modeled as a sizable physical entity equipped with a Global Positioning System, wireless communication capability, and a computer such as PDA. The main focus is on vehicles in a network of highways.

ISBN: 0493838236Subjects--Topical Terms:

890869
Computer Science

Data management of moving objects.
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502 $a Thesis (Ph.D.)--University of California, Santa Barbara, 2002.
520 $a With the growing popularity of mobile computing devices and wireless communications, managing dynamically changing information about moving objects has become feasible. There are several applications that will benefit from data management for moving objects. The time-dependent shortest path problem in the context of transportation is one such application. In this dissertation, a moving object is modeled as a sizable physical entity equipped with a Global Positioning System, wireless communication capability, and a computer such as PDA. The main focus is on vehicles in a network of highways.
520 $a We have developed a model (the Space-Time Grid model) to efficiently manage dynamically changing information about moving objects in a one-dimensional space. In the Space-Time Grid model, the space-time domain is partitioned into a grid and the trajectory of a moving object is modeled as a polyline. The polyline is the result of interactions among other moving objects. The insertion and deletion algorithms and algorithms for processing range queries and k nearest neighbor queries in such an environment are presented. The range query algorithm is combined with an efficient filtering technique which determines if a polyline corresponding to the trajectory of a moving object intersects with a given range. A performance study of the system shows that despite the filtering step, for moderately large ranges, the proposed range query algorithm outperforms the algorithm without filtering
520 $a The system is then extended to two-dimensional space to handle moving objects following certain paths in a network of routes. The system can be used to provide time-dependent shortest paths to moving objects. A performance study shows the benefit of our approach
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