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Error in Self-Stabilizing Spanning-Tree Estimation of Collective State
Conference proceeding

Error in Self-Stabilizing Spanning-Tree Estimation of Collective State

Yuanqiu Mo, Jacob Beal and Soura Dasgupta
2017 IEEE 2nd International Workshops on Foundations and Applications of Self Systems (FASW), pp.1-6
09/2017
DOI: 10.1109/FAS-W.2017.112

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Abstract

Estimating collective state is an important component of many distributed systems, but has inherent challenges in balancing the availability of estimates against their accuracy. In this paper, we analyze the error bounds and dynamics of a commonly used family of self-stabilizing state estimation algorithms based on spanning trees. We find that in the worst case transients can duplicate values leading to exponential overestimates or can drop values leading to near total loss of information. The same analysis, however, also suggests that these problems can be mitigated by prioritizing smoothness in the adaptation of distance estimates used to maintain the spanning tree, and this mitigating effect is supported by results in simulation.
aggregate programming Aggregates Algorithm design and analysis Conferences control theory Electronic mail Heuristic algorithms predictable composition State estimation

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