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Takanobu Furuhashi

4 papers hereh-index 24 citations4 works total

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

author position
  • first author4

Across the 4 of 4 papers where every author was matched, so the position is known.

fields
  • cs.LG4

identity via Semantic Scholar / OpenAlex

activity
20242026
collaborators

4 papers

cs.LG2026

Deep Unfolded Latent Optimally Partitioned-l2/l1 Networks for Data-driven Block-Sparse Recovery

Takanobu Furuhashi, Hidekata Hontani, Qibin Zhao +1

The convex Latent Optimal Partition (LOP)-l2/l1 approach enables block-sparse signal recovery with unknown partitions but relies on manual hyperparameter tuning. Additionally, nume…

cs.LG2026

Nonconvex Latent Optimally Partitioned Block-Sparse Recovery via Log-Sum and Minimax Concave Penalties

Takanobu Furuhashi, Hiroki Kuroda, Masahiro Yukawa +3

We propose two nonconvex regularization methods, LogLOP-l2/l1 and AdaLOP-l2/l1, for recovering block-sparse signals with unknown block partitions. These methods address the underes…

cs.LG2025

WEEP: A Differentiable Nonconvex Sparse Regularizer via Weakly-Convex Envelope

Takanobu Furuhashi, Hidekata Hontani, Qibin Zhao +1

Sparse regularization is fundamental in signal processing and feature extraction but often relies on non-differentiable penalties, conflicting with gradient-based optimizers. We pr…

cs.LG2024

Adaptive Block Sparse Regularization under Arbitrary Linear Transform

Takanobu Furuhashi, Hidekata Hontani, Tatsuya Yokota

We propose a convex and fast signal reconstruction method for block sparsity under arbitrary linear transform with unknown block structure. The proposed method is a generalization…

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