Automatic Time-Series Clustering via Network Inference. - Kohei Obata (PhD@VLDB, 2022)

Mining of Switching Sparse Networks for Missing Value Imputation in Multivariate Time Series. - Kohei Obata; Koki Kawabata; Yasuko Matsubara; Yasushi Sakurai (KDD, 2024)

Gaussian Graphical Model-Based Clustering of Time Series Data. - Kohei Obata (WSDM, 2024)

Dynamic Multi-Network Mining of Tensor Time Series. - Kohei Obata; Koki Kawabata; Yasuko Matsubara; Yasushi Sakurai (WWW, 2024)

Disentangled Mode-Specific Representations for Tensor Time Series via Contrastive Learning. - Kohei Obata; Taichi Murayama; Zheng Chen 012; Yasuko Matsubara; Yasushi Sakurai (PAKDD (6), 2025)

Robust and Explainable Detector of Time Series Anomaly via Augmenting Multiclass Pseudo-Anomalies. - Kohei Obata; Yasuko Matsubara; Yasushi Sakurai (CoRR, 2025)