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Cited by 616

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Checking computations in polylogarithmic time

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Babai, László, Fortnow, Lance, Levin, Leonid A., Szegedy, Mario·1991·Proceedings of the twenty-third annual ACM symposium on Theory of computing - STOC '91

Abstract

. Motivated by Manuel Blum's concept of instance checking, we consider new, very fast and generic mechanisms of checking computations. Our results exploit recent advances in interactive proof protocols [LFKN92], [Sha92], and especially the MIP = NEXP protocol from [BFL91]. We show that every nondeterministic computational task S(x; y), defined as a polynomial time relation between the instance x, representing the input and output combined, and the witness y can be modified to a task S 0 such that: (i) the same instances remain accepted; (ii) each instance/witness pair becomes checkable in polylogarithmic Monte Carlo time; and (iii) a witness satisfying S 0 can be computed in polynomial time from a witness satisfying S. Here the instance and the description of S have to be provided in error-correcting code (since the checker will not notice slight changes). A modification of the MIP proof was required to achieve polynomial time in (iii); the earlier technique yields N O(log log N)...

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Metadata

Authors
Babai, L., Fortnow, L., Levin, L. A., & Szegedy, M.
Venue
Proceedings of the twenty-third annual ACM symposium on Theory of computing - STOC '91
Publisher
ACM Press
Published
1991
Pages
21-32
OpenAlex
W2053086236
Cited by
616
References
20
FWCI
11.32
Type
conference paper
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Checking computations in polylogarithmic time. https://app.cochat.ai/papers/10.1145/103418.103428
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Babai, L., Fortnow, L., Levin, L. A., & Szegedy, M. (1991). Checking computations in polylogarithmic time. Proceedings of the twenty-third annual ACM symposium on Theory of computing - STOC '91. https://doi.org/10.1145/103418.103428

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