Locally Testble Codes. Cheraghchi, M. Master's thesis, EPFL, Lausanne, Switzerland, 2005. Paper abstract bibtex Error correcting codes are combinatorial objects that allow reliable recovery of information in presence of errors by cleverly augmenting the original information with a certain amount of redundancy. The availability of efficient means of error detection is considered as a fundamental criterion for error correcting codes. Locally testable codes are families of error correcting codes that are highly robust against transmission errors and in addition provide super-efficient (sublinear time) probabilistic algorithms for error detection. In particular, the error detection algorithm probes the received sequence only at a small (or even constant) number of locations. There seems to be a trade-off between the amount of redundancy and the number of probes for the error detection procedure in locally testable codes. Even though currently best constructions allow reduction of redundancy to a nearly linear amount, it is not clear whether this can be further reduced to linear while preserving a constant number of probes. We study the formal notion of locally testable codes and survey several major results in this area. We also investigate closely related concepts, and in particular, polynomial low-degree tests and probabilistically checkable proofs.
@mastersthesis{ref:Che05:thesis,
author = {Mahdi Cheraghchi},
title = {Locally Testble Codes},
school = {EPFL},
url_Paper =
{https://eccc.weizmann.ac.il//static/books/Locally_Testable_Codes},
institution = {IIF},
publisher = {EPFL},
address = {Lausanne, Switzerland},
year = 2005,
abstract = { Error correcting codes are combinatorial objects
that allow reliable recovery of information in
presence of errors by cleverly augmenting the
original information with a certain amount of
redundancy. The availability of efficient means of
error detection is considered as a fundamental
criterion for error correcting codes. Locally
testable codes are families of error correcting
codes that are highly robust against transmission
errors and in addition provide super-efficient
(sublinear time) probabilistic algorithms for error
detection. In particular, the error detection
algorithm probes the received sequence only at a
small (or even constant) number of locations. There
seems to be a trade-off between the amount of
redundancy and the number of probes for the error
detection procedure in locally testable codes. Even
though currently best constructions allow reduction
of redundancy to a nearly linear amount, it is not
clear whether this can be further reduced to linear
while preserving a constant number of probes. We
study the formal notion of locally testable codes
and survey several major results in this area. We
also investigate closely related concepts, and in
particular, polynomial low-degree tests and
probabilistically checkable proofs. },
keywords = {Error Correcting Codes, Locally Testable Codes,
Probabilistically Checkable Proofs (PCP), Low-Degree
Tests, Hardness of Approximation}
}
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