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Comment on Efficient Secure Outsourcing of Large-Scale Sparse Linear Systems of Equations

par Cao, Zhengjun ;Markowitch, Olivier
Référence IEEE Transactions on Big Data, 7, 6, page (973-974)
Publication Publié, 2021-12-01

Article révisé par les pairs

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Résumé :

The scheme [IEEE Trans. Big Data, 4 (1), 2018, 26-39] is flawed because the sparsity of coefficient matrix is neglected. In the discussed scenario, we find it is unnecessary to outsource such a problem because the client can solve it locally. Even if the matrix is not sparse, the proposed paradigm which requires a great number of interactions, is rarely adopted because of the possibly incurred massive communication cost.