Search Results for author: Takuma Otsuka

Found 5 papers, 0 papers with code

Quantum transport evidence of Weyl fermions in an epitaxial ferromagnetic oxide

no code implementations2 Apr 2020 Kosuke Takiguchi, Yuki K. Wakabayashi, Hiroshi Irie, Yoshiharu Krockenberger, Takuma Otsuka, Hiroshi Sawada, Sergey A. Nikolaev, Hena Das, Masaaki Tanaka, Yoshitaka Taniyasu, Hideki Yamamoto

SrRuO3, a 4d ferromagnetic metal often used as an epitaxial conducting layer in oxide heterostructures, provides a promising opportunity to seek for the existence of magnetic Weyl fermions.

Materials Science Strongly Correlated Electrons

Efficient Transfer Bayesian Optimization with Auxiliary Information

no code implementations17 Sep 2019 Tomoharu Iwata, Takuma Otsuka

By using the neural network covariance function, we can extract nonlinear correlation among feature vectors that are shared across related tasks.

Bayesian Optimization

On Transformations in Stochastic Gradient MCMC

no code implementations7 Mar 2019 Soma Yokoi, Takuma Otsuka, Issei Sato

Although SGLD is designed for unbounded random variables, many practical models incorporate variables with boundaries such as non-negative ones or those in a finite interval.

Finding Appropriate Traffic Regulations via Graph Convolutional Networks

no code implementations23 Oct 2018 Tomoharu Iwata, Takuma Otsuka, Hitoshi Shimizu, Hiroshi Sawada, Futoshi Naya, Naonori Ueda

In this paper, we propose a method to learn a function that outputs regulation effects given the current traffic situation as inputs.

Multi-output Polynomial Networks and Factorization Machines

no code implementations NeurIPS 2017 Mathieu Blondel, Vlad Niculae, Takuma Otsuka, Naonori Ueda

On recommendation system tasks, we show how to combine our algorithm with a reduction from ordinal regression to multi-output classification and show that the resulting algorithm outperforms simple baselines in terms of ranking accuracy.

General Classification

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