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Koshi Watanabe

3 papers hereh-index 210 citations15 works total

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

author position
  • first author3

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

fields
  • cs.LG2
  • cs.CE1

identity via Semantic Scholar / OpenAlex

activity
20242026
collaborators

3 papers

cs.CE2026

Uncovering Residual Factors in Financial Time Series via PCA and MTP2-constrained Gaussian Graphical Models

Koshi Watanabe, Ryota Ozaki, Kentaro Imajo +1

Financial time series are commonly decomposed into market factors, which capture shared price movements across assets, and residual factors, which reflect asset-specific deviations…

cs.LG2025

StarMAP: Global Neighbor Embedding for Faithful Data Visualization

Koshi Watanabe, Keisuke Maeda, Takahiro Ogawa +1

Neighbor embedding is widely employed to visualize high-dimensional data; however, it frequently overlooks the global structure, e.g., intercluster similarities, thereby impeding a…

cs.LG2024

Hyperboloid GPLVM for Discovering Continuous Hierarchies via Nonparametric Estimation

Koshi Watanabe, Keisuke Maeda, Takahiro Ogawa +1

Dimensionality reduction (DR) offers a useful representation of complex high-dimensional data. Recent DR methods focus on hyperbolic geometry to derive a faithful low-dimensional r…

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