The price of incorrectly aggregating coverage values in sensor selection

Amotz Bar-Noy, Matthew P. Johnson, Nooreddin Naghibolhosseini, Dror Rawitz, Simon Shamoun

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

An important problem in the study of sensor networks is how to select a set of sensors that maximizes coverage of other sensors. Given pair wise coverage values, three commonly found functions give some estimate of the aggregate coverage possible by a set of sensors: maximum coverage by any selected sensor (MAX), total coverage by all selected sensors (SUM), and the probability of correct prediction by at least one sensor (PROB). MAX and SUM are two extremes of possible coverage, while PROB, based on an independence assumption, is in the middle. This paper addresses the following question: what guarantees can be made of coverage that is evaluated by an unknown sub-modular function of coverage when sensors are selected according to MAX, SUM, or PROB? We prove that the guarantees are very bad: In the worst case, coverage differs by a factor of sqrt(n), where n is the number of sensors. We show in simulations on synthetic and real data that the differences can be quite high as well. We show how to potentially address this problem using a hybrid of the coverage functions.

Original languageEnglish
Title of host publicationProceedings - IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages98-107
Number of pages10
ISBN (Electronic)9781479988563
DOIs
StatePublished - 22 Jul 2015
Event11th IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2015 - Fortaleza, Brazil
Duration: 10 Jun 201512 Jun 2015

Publication series

NameProceedings - IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2015

Conference

Conference11th IEEE International Conference on Distributed Computing in Sensor Systems, DCOSS 2015
Country/TerritoryBrazil
CityFortaleza
Period10/06/1512/06/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

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