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Atsushi Shibagaki

2 accepted papers

2016

Simultaneous Safe Screening of Features and Samples in Doubly Sparse Modeling

ICML 2016poster

The problem of learning a sparse model is conceptually interpreted as the process of identifying active features/samples and then optimizing the model over them. Recently introduced safe screening allows us to identify a part of non-active features/samples. So far, safe screening has been individual…

2015

Regularization Path of Cross-Validation Error Lower Bounds

NeurIPS 2015poster

Careful tuning of a regularization parameter is indispensable in many machine learning tasks because it has a significant impact on generalization performances.Nevertheless, current practice of regularization parameter tuning is more of an art than a science, e.g., it is hard to tell how many grid-p…