Mean-Based Trace Reconstruction over Practically any Replication-Insertion Channel. Cheraghchi, M., Downs, J., Ribeiro, J., & Veliche, A. In Proceedings of the IEEE International Symposium on Information Theory (ISIT), 2021. Paper Link doi abstract bibtex 9 downloads Mean-based reconstruction is a fundamental, natural approach to worst-case trace reconstruction over channels with synchronization errors. It is known that $\exp(O(n^{1/3}))$ traces are necessary and sufficient for mean-based worst-case trace reconstruction over the deletion channel, and this result was also extended to certain channels combining deletions and geometric insertions of uniformly random bits. In this work, we use a simple extension of the original complex-analytic approach to show that these results are examples of a much more general phenomenon: $\exp(O(n^{1/3}))$ traces suffice for mean-based worst-case trace reconstruction over any memoryless channel that maps each input bit to an arbitrarily distributed sequence of replications and insertions of random bits, provided the length of this sequence follows a sub-exponential distribution.
@INPROCEEDINGS{ref:CDRV21,
author = {Mahdi Cheraghchi and Joseph Downs and Jo\~{a}o Ribeiro
and Alexandra Veliche},
title = {Mean-Based Trace Reconstruction over Practically any
Replication-Insertion Channel},
year = 2021,
booktitle = {Proceedings of the {IEEE International Symposium on
Information Theory (ISIT)}},
url_Paper = {https://arxiv.org/abs/2102.09490},
url_Link = {https://ieeexplore.ieee.org/document/9518161},
doi = {10.1109/ISIT45174.2021.9518161},
abstract = {Mean-based reconstruction is a fundamental, natural
approach to worst-case trace reconstruction over
channels with synchronization errors. It is known
that $\exp(O(n^{1/3}))$ traces are necessary and
sufficient for mean-based worst-case trace
reconstruction over the deletion channel, and this
result was also extended to certain channels
combining deletions and geometric insertions of
uniformly random bits. In this work, we use a
simple extension of the original complex-analytic
approach to show that these results are examples of
a much more general phenomenon: $\exp(O(n^{1/3}))$
traces suffice for mean-based worst-case trace
reconstruction over any memoryless channel that maps
each input bit to an arbitrarily distributed
sequence of replications and insertions of random
bits, provided the length of this sequence follows a
sub-exponential distribution.}
}
Downloads: 9
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