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• W1507911753 abstract "For any matrix A in R^(m x n) of rank rho, we present a probability distribution over the entries of A (the element-wise leverage scores of equation (2)) that reveals the most influential entries in the matrix. From a theoretical perspective, we prove that sampling at most s = O ((m + n) rho^2 ln (m + n)) entries of the matrix (see eqn. (3) for the precise value of s) with respect to these scores and solving the nuclear norm minimization problem on the sampled entries, reconstructs A exactly. To the best of our knowledge, these are the strongest theoretical guarantees on matrix completion without any incoherence assumptions on the matrix A. From an experimental perspective, we show that entries corresponding to high element-wise leverage scores reveal structural properties of the data matrix that are of interest to domain scientists." @default.
• W1507911753 created "2016-06-24" @default.
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• W1507911753 date "2013-10-14" @default.
• W1507911753 modified "2023-09-27" @default.
• W1507911753 title "Identifying Influential Entries in a Matrix." @default.
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