Iwashita Toshiya

イワシタトシヤ | Iwashita Toshiya

Research field (2)： Basic mathematics , Applied mathematics and statistics

Research keywords (1)： Multivariate Analysis, Asymptotic Theory

Research theme for competitive and other funds (9)：

2018 - 2023 多変量楕円母集団の下での新たな検定手法の開発とその応用
2018 - 2021 Extension of Matrix variate distribution
2006 - 2008 A study of multivariate multiple comparison procedure in non-regulardata and its applications
1996 - 1998 The Guidance of the Asymptotic Expansion Formulae on the Multivariate Inference
1995 - 1996 Validation study of assays alternative to animal experiments from a statistical viewpoint

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Papers (19)：

Toshiya Iwashita, Bernhard Klar. A necessary test for elliptical symmetry based on the uniform distribution over the Stiefel manifold. SUT Journal of Mathematics. 2020. 56. 2. 129-145
Aya Shinozaki, Hiroki Hashiguchi, Toshiya Iwashita. DISTRIBUTION OF THE LARGEST EIGENVALUE OF AN ELLIPTICAL WISHART MATRIX AND ITS SIMULATION. JOURNAL JAPANESE SOCIETY OF COMPUTATIONAL STATISTICS. 2018. 30. 2. 1-12
Toshiya Iwashita, Bernhard Klar, Moe Amagai, Hiroki Hashiguchi. A test procedure for uniformity on the Stiefel manifold based on projection. STATISTICS & PROBABILITY LETTERS. 2017. 128. 89-96
Toshiya Iwashita, Bernhard Klar. The joint distribution of Studentized residuals under elliptical distributions. JOURNAL OF MULTIVARIATE ANALYSIS. 2014. 128. 203-209
Hasegawa Ken, Iwashita Toshiya, Inoue Tatsuki. SAMPLING DISTRIBUTION OF GENERALIZED NON-CENTRAL F-STATISTICS UNDER ELLIPTICAL POPULATIONS. Bulletin of the Computational Statistics of Japan. 2014. 26. 2. 79-91

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MISC (16)：

岩下登志也. サイエンスへの招待非正規分布に基づく統計解析. 理大科学フォーラム : 東京理科大学科学教養誌. 2020. 37. 4. 24-29
篠崎絢, 橋口博樹, 岩下登志也. 楕円母集団下でのウィシャート行列の最大最小固有値の分布について. 日本計算機統計学会大会論文集. 2017. 31. 33-36
雨ヶ谷萌, 岩下登志也, 橋口博樹, Klar Bernhard. 主成分射影に基づく超球面一様性の検定. 日本計算機統計学会大会論文集. 2016. 30. 101-102
柿沢佳秀、岩下登志也. 多変量解析における漸近展開:微分作用素の使用の観点から. 国際数理科学協会会報. 2008. 56. 14-25
Kouji Tahata, Toshiya Iwashita, Sadao Tomizawa. Measure of departure from symmetry of cumulative marginal probabilities for square contingency tables with ordered categories. 2006. 42. 1. 7-29

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Lectures and oral presentations (13)：

Exact and approximate distributions of the largest eignevalues of singuar Wishart matrix
(DAGSTAT 2019 2019)
A Necessary Test for Elliptical Symmetry
(DAGSTAT 2019 2019)
特異ウィシャート行列の最大・最小固有値分布について
(科研費シンポジウム「多変量データ解析における理論と応用」 2018)
楕円対称性の必要性検定
(科研費シンポジウム「多変量データ解析における理論と応用」 2018)
Numerical computation for the distribution of largeest eigenvalue under elliptical model
(Statistical Computing : Challenges and Opportunities in Data Science 2018)

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Education (2)：

- 1994 Osaka University Graduate School, Division of Engineering Science Mathemtaical Science
- 1994 Osaka University Graduate School, Division of Engineering Science Mathemtaical Science

Professional career (1)：

Committee career (2)：

Association Membership(s) (3)：

Japan Statistical Society , 日本計算機統計学会 , 日本数学会

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