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• W2108492727 abstract "Important applications in robotic and sensor networks require distributed algorithms to solve the so-called relative localization problem: node-indexed vector has to be reconstructed from measurements of differences between neighbor nodes. In recent note, we have studied the estimation error of popular gradient descent algorithm showing that the mean square error has minimum at finite time, after which the performance worsens. This paper proposes suitable modification of this algorithm incorporating more realistic a priori information on the position. The new algorithm presents performance monotonically decreasing to the optimal one. Furthermore, we show that the optimal performance is approximated, up to 1 + eps factor, within time which is independent of the graph and of the number of nodes. This convergence time is very much related to the minimum exhibited by the previous algorithm and both lead to the following conclusion: in the presence of noisy data, cooperation is only useful till certain limit." @default.
• W2108492727 created "2016-06-24" @default.
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• W2108492727 date "2013-03-25" @default.
• W2108492727 modified "2023-10-06" @default.
• W2108492727 title "Limited benefit of cooperation in distributed relative localization" @default.
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