Hayoung Choi

activity

20242026

most citedImproved identification of breakpoints in piecewise regression and its applications

1 citations · 1 across the 4 of their papers we have counts for

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2 papers · 1 filter

math.NA2026

Low T-Phase Rank Approximation of Third Order Tensors

Taehyeong Kim, Hayoung Choi, Yimin Wei

We study low T-phase-rank approximation of sectorial third-order tensors $A \in C^{n \times n \times p}$ under the tensor T-product. We introduce canonical T-phases…

math.NA2024

Geometric mean for T-positive definite tensors and associated Riemannian geometry

Jeong-Hoon Ju, Taehyeong Kim, Yeongrak Kim +1

In this paper, we generalize the geometric mean of two positive definite matrices to that of third-order tensors using the notion of T-product. Specifically, we define the geometri…