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Efficient Construction of Encoding Polynomials in a Distributed Coded Computing Scheme

Daisuke HIBINO, Tomoharu SHIBUYA

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Summary :

Distributed computing is one of the powerful solutions for computational tasks that need the massive size of dataset. Lagrange coded computing (LCC), proposed by Yu et al. [15], realizes private and secure distributed computing under the existence of stragglers, malicious workers, and colluding workers by using an encoding polynomial. Since the encoding polynomial depends on a dataset, it must be updated every arrival of new dataset. Therefore, it is necessary to employ efficient algorithm to construct the encoding polynomial. In this paper, we propose Newton coded computing (NCC) which is based on Newton interpolation to construct the encoding polynomial. Let K, L, and T be the number of data, the length of each data, and the number of colluding workers, respectively. Then, the computational complexity for construction of an encoding polynomial is improved from O(L(K+T)log 2(K+T)log log (K+T)) for LCC to O(L(K+T)log (K+T)) for the proposed method. Furthermore, by applying the proposed method, the computational complexity for updating the encoding polynomial is improved from O(L(K+T)log 2(K+T)log log (K+T)) for LCC to O(L) for the proposed method.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E107-A No.3 pp.476-485
Publication Date
2024/03/01
Publicized
2023/08/10
Online ISSN
1745-1337
DOI
10.1587/transfun.2023TAP0011
Type of Manuscript
Special Section PAPER (Special Section on Information Theory and Its Applications)
Category
Cryptography and Information Security

Authors

Daisuke HIBINO
  Sophia University
Tomoharu SHIBUYA
  Sophia University

Keyword