Sangam: A Confluence of Knowledge Streams

Locally Testable Codes Require Redundant Testers

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dc.contributor Massachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratory
dc.contributor Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
dc.contributor Sudan, Madhu
dc.contributor Kaufman-Halman, Tali
dc.contributor Sudan, Madhu
dc.creator Viderman, Michael
dc.creator Guruswami, Venkatesan
dc.creator Ben-Sasson, Eli
dc.creator Kaufman-Halman, Tali
dc.creator Sudan, Madhu
dc.date 2010-03-11T19:42:22Z
dc.date 2010-03-11T19:42:22Z
dc.date 2009-09
dc.date.accessioned 2023-03-01T18:07:41Z
dc.date.available 2023-03-01T18:07:41Z
dc.identifier 978-0-7695-3717-7
dc.identifier 1093-0159
dc.identifier http://hdl.handle.net/1721.1/52520
dc.identifier Ben-Sasson, E. et al. “Locally Testable Codes Require Redundant Testers.” Computational Complexity, 2009. CCC '09. 24th Annual IEEE Conference on. 2009. 52-61. © 2009 IEEE
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/278853
dc.description Locally testable codes (LTCs) are error- correcting codes for which membership, in the code, of a given word can be tested by examining it in very few locations. Most known constructions of locally testable codes are linear codes, and give error-correcting codes whose duals have (superlinearly) many small weight codewords. Examining this feature appears to be one of the promising approaches to proving limitation results for (i.e., upper bounds on the rate of) LTCs. Unfortunately till now it was not even known if LTCs need to be non-trivially redundant, i.e., need to have one linear dependency among the low-weight codewords in its dual. In this paper we give the first lower bound of this form, by showing that every positive rate constant query strong LTC must have linearly many redundant low-weight codewords in its dual. We actually prove the stronger claim that the actual test itself must use a linear number of redundant dual codewords (beyond the minimum number of basis elements required to characterize the code); in other words, non-redundant (in fact, low redundancy) local testing is impossible.
dc.format application/pdf
dc.language en_US
dc.publisher Institute of Electrical and Electronics Engineers
dc.relation http://dx.doi.org/10.1109/CCC.2009.6
dc.relation 2009 Computational Complexity
dc.rights Attribution-Noncommercial-Share Alike 3.0 Unported
dc.rights http://creativecommons.org/licenses/by-nc-sa/3.0/
dc.source Joanne Hanley
dc.title Locally Testable Codes Require Redundant Testers
dc.type Article
dc.type http://purl.org/eprint/type/ConferencePaper


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