Paper Info
Title
Search On A Line By Byzantine Robots
Abstract
We consider the problem of fault-tolerant parallel search on an infinite line by n robots. Starting from the origin, the robots are required to find a target at an unknown location. The robots can move with maximum speed 1 and can communicate wirelessly among themselves. However, among the n robots, there are f robots that exhibit byzantine faults. A faulty robot can fail to report the target even after reaching it, or it can make malicious claims about having found the target when in fact it has not. Given the presence of such faulty robots, the search for the target can only be concluded when the non-faulty robots have sufficient evidence that the target has been found. We aim to design algorithms that minimize the value of S-d(n, f), the time to find a target at a (unknown) distance d from the origin by n robots among which f are faulty. We give several different algorithms whose running time depends on the ratio f/n, the density of faulty robots, and also prove lower bounds. Our algorithms are optimal for some densities of faulty robots.
Year
DOI
Venue
2016
10.1142/S0129054121500209
INTERNATIONAL JOURNAL OF FOUNDATIONS OF COMPUTER SCIENCE
Keywords
DocType
Volume
Cow path problem, parallel search, mobile robots, wireless communication, byzantine faults
Conference
32
Issue
ISSN
Citations 
04
0129-0541
0
PageRank 
References 
Authors
0.34
0
7
Name
Order
Citations
PageRank
Jurek Czyzowicz177874.35
Konstantinos Georgiou201.01
Evangelos Kranakis33107354.48
Danny Krizanc41778191.04
Lata Narayanan561362.78
Jaroslav Opatrny648144.39
Sunil M. Shende721824.35