Search Results for author: Atsushi Shibagaki

Found 4 papers, 1 papers with code

Efficiently Bounding Optimal Solutions after Small Data Modification in Large-Scale Empirical Risk Minimization

no code implementations1 Jun 2016 Hiroyuki Hanada, Atsushi Shibagaki, Jun Sakuma, Ichiro Takeuchi

We study large-scale classification problems in changing environments where a small part of the dataset is modified, and the effect of the data modification must be quickly incorporated into the classifier.

General Classification Small Data Image Classification

Simultaneous Safe Screening of Features and Samples in Doubly Sparse Modeling

no code implementations8 Feb 2016 Atsushi Shibagaki, Masayuki Karasuyama, Kohei Hatano, Ichiro Takeuchi

A significant advantage of considering them simultaneously rather than individually is that they have a synergy effect in the sense that the results of the previous safe feature screening can be exploited for improving the next safe sample screening performances, and vice-versa.

Regularization Path of Cross-Validation Error Lower Bounds

1 code implementation NeurIPS 2015 Atsushi Shibagaki, Yoshiki Suzuki, Masayuki Karasuyama, Ichiro Takeuchi

Careful tuning of a regularization parameter is indispensable in many machine learning tasks because it has a significant impact on generalization performances.

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