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Preprints, Working Papers, ... Year : 2024

Minimax optimal seriation in polynomial time


We consider the statistical seriation problem, where the statistician seeks to recover a hidden ordering from a noisy observation of a permuted Robinson matrix. In this paper, we tightly characterize the minimax rate for this problem of matrix reordering when the Robinson matrix is bi-Lipschitz, and we also provide a polynomial time algorithm achieving this rate; thereby answering two open questions of [Giraud et al., 2021]. Our analysis further extends to broader classes of similarity matrices.


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hal-04575332 , version 1 (14-05-2024)



Yann Issartel, Christophe Giraud, Nicolas Verzelen. Minimax optimal seriation in polynomial time. 2024. ⟨hal-04575332⟩
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