Hidetoshi Matsui

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ℓ 1 penalties such as the lasso provide solutions with some coefficients to be exactly zeros, which lead to variable selection in regression settings. They also can select variables which affect the classification by being applied to the logistic regression model. We focus on the form of ℓ 1 penalties in logistic regression models for functional data,(More)
Bazex syndrome is a rare paraneoplastic dermatosis. The underlying malignancy frequently is squamous cell carcinoma of the upper aerodigestive tract or cervical lymph nodes from an unknown primary site. We report a 63-year-old man with squamous cell carcinoma of cervical lymph nodes from an unknown primary site. He developed a mass on the right side of his(More)
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