Dynamic Topological Predicates and Notifications in Moving Databases
Written with Goce Trajcevski, Peter Scheuermann, and Agnès Voisard.
Abstract:
In this paper we present two dynamic topological predicates:
moving_along and moving_towards, and we address their efficient
management for notification purposes in Moving Object Databases (MOD)
settings. We present efficient algorithmic solutions and based on this
we also take a deeper insight into the behavioral aspects of a MOD which
manages such predicates. We argue that the traditional ECA (Event
Condition Action) paradigm is not wekk-suited to ensure proper efficient
reactive behavior and we introduce the
(Evolving and Context-Aware Event-Condition-Action) paradigm as a tool
for specification of the behavior of a MOD which handles requests that
span over a time interval in the dynamic environment.
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Copyright © 2005, Hervé Brönnimann, hbr@poly.edu
