C
Christian S. Jensen
Researcher at Aalborg University
Publications - 541
Citations - 26166
Christian S. Jensen is an academic researcher from Aalborg University. The author has contributed to research in topics: Temporal database & Query language. The author has an hindex of 80, co-authored 507 publications receiving 24234 citations. Previous affiliations of Christian S. Jensen include University of Maryland, College Park & Zhejiang University.
Papers
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Book ChapterDOI
The consensus glossary of temporal database concepts — February 1998 version
Christian S. Jensen,Curtis E. Dyreson,Michael H. Böhlen,James Clifford,Ramez Elmasri,Shashi K. Gadia,Fabio Grandi,Patrick J. Hayes,Sushil Jajodia,Wolfgang Käfer,Nick Kline,Nikos A. Lorentzos,Yannis Mitsopoulos,Angelo Montanari,Daniel Nonen,Elisa Peressi,Barbara Pernici,John F. Roddick,Nandlal L. Sarda,Maria Rita Scalas,Arie Segev,Richard T. Snodgrass,Michael D. Soo,Abdullah Uz Tansel,Paolo Tiberio,Gio Wiederhold +25 more
TL;DR: This document1 contains definitions of a wide range of concepts specific to and widely used within temporal databases, as well as discussions of the adopted names.
Journal ArticleDOI
Techniques for efficient road-network-based tracking of moving objects
TL;DR: Algorithms are presented that modify an initial road-network representation, so that it works better as a basis for predicting an object's position, and an attempt is made to use known movement patterns of the object, in the form of routes, to use acceleration profiles together with the routes.
Proceedings ArticleDOI
Indexing of moving objects for location-based services
TL;DR: Performance experiments indicate that the new R-tree based technique for the indexing of the current positions of objects can improve search performance by a factor of two or more without sacrificing update performance.
Journal ArticleDOI
A glossary of temporal database concepts
TL;DR: A structured presentation of the results of e-mail discussions initiated during the preparation of the first book on temporal databases, Temporal Databases: Theory, Design, and Implementation, published by Benjamin Cummings, to appear January 1993.
Proceedings ArticleDOI
Nearest neighbor queries in road networks
TL;DR: This paper presents an easily implementable data model that serves well as a foundation for active, ordered k-nearest neighbor queries for query and data objects that are moving in road networks and designs a prototype system that implements the queries based on the data model.