Search Results for author: Koichi Tojo

Found 5 papers, 0 papers with code

A method to construct exponential families by representation theory

no code implementations4 Nov 2018 Koichi Tojo, Taro Yoshino

In this paper, we give a method to construct "good" exponential families systematically by representation theory.

On a method to construct exponential families by representation theory

no code implementations6 Jul 2019 Koichi Tojo, Taro Yoshino

In arXiv:1811. 01394, we introduced a method to construct an exponential family $\mathcal{P}=\{p_\theta\}_{\theta\in\Theta}$ on a homogeneous space $G/H$ from a pair $(V, v_0)$.

Coupling-based Invertible Neural Networks Are Universal Diffeomorphism Approximators

no code implementations NeurIPS 2020 Takeshi Teshima, Isao Ishikawa, Koichi Tojo, Kenta Oono, Masahiro Ikeda, Masashi Sugiyama

We answer this question by showing a convenient criterion: a CF-INN is universal if its layers contain affine coupling and invertible linear functions as special cases.

Image Generation Representation Learning

Universal Approximation Property of Neural Ordinary Differential Equations

no code implementations4 Dec 2020 Takeshi Teshima, Koichi Tojo, Masahiro Ikeda, Isao Ishikawa, Kenta Oono

Neural ordinary differential equations (NODEs) is an invertible neural network architecture promising for its free-form Jacobian and the availability of a tractable Jacobian determinant estimator.

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