Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Indexing Historical Spatiotemporal Data

  • Mohamed F. Mokbel
  • Walid G. Aref
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_198

Synonyms

Historical spatio-temporal access methods; Indexing the past; Trajectory indexing

Definition

Consider an object O that reports to a database server two consecutive locations P0 = (x0,y0) and P1 = (x1,y1) at times t0 and t1, respectively. The database server has no idea about the exact locations of object O between t0 and t1. To be able to answer queries regarding the user location at any time, the database server interpolates the two accurate locations through a trajectory that connects P0 and P1 through a straight line. While object O keeps sending location samples, the database server keeps accumulating set of consecutive trajectory lines that represent the historical movement of object O. Indexing historical spatio-temporal data includes dealing with such large numbers of trajectories. The main idea is to organize past trajectories in a way that supports historical spatial, temporal, and spatio-temporal queries.

Historical Background

The rapid increase in spatio-temporal...

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Computer Science and EngineeringUniversity of Minnesota-Twin CitiesMinneapolisUSA
  2. 2.Purdue UniversityWest LafayetteUSA

Section editors and affiliations

  • Dimitris Papadias
    • 1
  1. 1.Dept. of Computer Science and Eng.Hong Kong Univ. of Science and TechnologyKowloonHong Kong SAR