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Keisuke Morita

3 papers hereh-index 210 citations5 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • first author2
  • middle author1

Across the 3 of 3 papers where every author was matched, so the position is known.

fields
  • cs.IT2
  • cs.LG1

identity via Semantic Scholar / OpenAlex

collaborators

3 papers

cs.IT2026

Sparse Signal Recovery using Log-Sum Regularization and Adaptive Smoothing

Keisuke Morita, Masayuki Ohzeki

We study sparse signal recovery from noisy linear observations using nonconvex log-sum regularization. The log-sum penalty reduces the shrinkage bias of ℓ1​ regularization and…

cs.IT2026

Phase transition in compressed sensing using log-sum penalty and adaptive smoothing

Keisuke Morita, Federico Ricci-Tersenghi, Masayuki Ohzeki

In many real-world problems, recovering sparse signals from underdetermined linear systems remains a fundamental challenge. Although ℓ1​ norm minimization is widely used, it s…

cs.LG2025

Filtering out mislabeled training instances using black-box optimization and quantum annealing

Makoto Otsuka, Kento Kodama, Keisuke Morita +1

This study proposes an approach for removing mislabeled instances from contaminated training datasets by combining surrogate model-based black-box optimization (BBO) with postproce…

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