Tasuku Soma

activity

20152026

most citedStatistical Learning with Conditional Value at Risk

22 citations · 63 across the 20 of their papers we have counts for

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2 papers · 1 filter

math.NA2017

On orthogonal tensors and best rank-one approximation ratio

Zhening Li, Yuji Nakatsukasa, Tasuku Soma +1

As is well known, the smallest possible ratio between the spectral norm and the Frobenius norm of an $m \times n$ matrix with $m \leq n$ is $1/ m$ and is (up to scalar scaling…

math.NA2015★ 2 cited

Finding a low-rank basis in a matrix subspace

Yuji Nakatsukasa, Tasuku Soma, André Uschmajew

For a given matrix subspace, how can we find a basis that consists of low-rank matrices? This is a generalization of the sparse vector problem. It turns out that when the subspace…