有效校正矩阵乘积
Efficiently Correcting Matrix Products
摘要:
研究了环上两个$n\times n$矩阵的错误乘积的有效纠正问题。除其他事项外,我们提供了一种用于纠正矩阵积的随机算法,其中最多有在$\tilde{O}(n^2+kn)$时间运行的$k$错误条目,以及用于该问题的确定性$\tilde{O}(kn^2)$时间算法(其中符号$\tilde{O}$抑制$n$和$k$中的多对数项)。
英文摘要:
We study the problem of efficiently correcting an erroneous product of two $n\times n$ matrices over a ring. Among other things, we provide a randomized algorithm for correcting a matrix product with at most $k$ erroneous entries running in $\tilde{O}(n^2+kn)$ time and a deterministic $\tilde{O}(kn^2)$-time algorithm for this problem (where the notation $\tilde{O}$ suppresses polylogarithmic terms in $n$ and $k$).
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