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Querying Moving Objects Detected by Sensor Networks (Paperback, 2013 ed.)
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Querying Moving Objects Detected by Sensor Networks (Paperback, 2013 ed.)
Series: SpringerBriefs in Computer Science
Expected to ship within 10 - 15 working days
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Declarative query interfaces to Sensor Networks (SN) have become a
commodity. These interfaces allow access to SN deployed for
collecting data using relational queries. However, SN are not
confined to data collection, but may track object movement, e.g.,
wildlife observation or traffic monitoring. While rational
approaches are well suited for data collection, research on Moving
Object Databases (MOD) has shown that relational operators are
unsuitable to express information needs on object movement, i.e.,
spatio-temporal queries. "Querying Moving Objects Detected by
Sensor Networks"studies declarative access to SN that track moving
objects. The properties of SN present a straightforward application
of MOD, e.g., node failures, limited detection ranges and accuracy
which vary over time etc. Furthermore, point sets used to model
MOD-entities like regions assume the availability of very accurate
knowledge regarding the spatial extend of these entities, assuming
such knowledge is unrealistic for most SN. This book is the first
that defines a complete set of spatio-temporal operators for SN
while taking into account their properties. Based on these
operators, we systematically investigate how to derive query
results from object detections by SN. Finally, process
spatio-temporal queries are shown in SN efficiently, i.e., reducing
the communication between nodes. The evaluation shows that the
measures reduce communication by 45%-89%."
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