Iwashita Toshiya 岩下登志也

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IWASHITA Toshiya 岩下登志也

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Researcher Number	20266919
Other IDs
Affiliation (Current)	2025: 東京理科大学, 教養教育研究院野田キャンパス教養部, 教授
Affiliation (based on the past Project Information) *help	2022 – 2023: 東京理科大学, 教養教育研究院野田キャンパス教養部, 教授 2021: 東京理科大学, 教養教育研究院野田キャンパス教養部, 准教授 2018 – 2020: 東京理科大学, 理工学部教養, 准教授 2008: 東京理科大学, 理工部, 准教授 2007 – 2008: 東京理科大学, 理工学部, 准教授 … More 2006: 東京理科大学, 理工学部, 助教授 1997 – 1998: 明星大学, 一般教育, 講師 1994 – 1996: Department of Management Science, Faculty of Engineering, Science University of, 工学部, 助手 1994: 東京理科大学, 工学部・経営工学科, 助手 Less
Review Section/Research Field	Principal Investigator Basic Section 60030:Statistical science-related / Statistical science Except Principal Investigator Statistical science / Basic Section 12040:Applied mathematics and statistics-related / Statistical science
Keywords	Principal Investigator 方向統計解析理論 / 非母数統計理論 / 一様分布 / Ｓｔｉｅｆｅｌ多様体 / 楕円母集団 / 位置母数 / 特殊多様体 / 一様性検定 / Stiefel 多様体 / Stiefel多様体 … More / 楕円対称性 / 楕円分布 / simulation / parameter space / accuracy and sample size / upper bound / asymptotic expansion / misdiscrimination / 多次元正規乱数 / 精度の近似上限 / 過判別確率 / 2群判別 / シミュレーション / パラメーターの有効範囲 / 精度と標本の大きさ / 近似上限 / 漸近展開公式 / 誤判別確率 … More Except Principal Investigator ED50 / Alternative assay / 代替法 / 多変量解析 / シミュレーション / 固有値分布 / ウィシャート行列 / 特異ランダム行列 / 特異行列 / ゾーナル多項式 / 超幾何関数 / 固有値 / ランダム行列論 / Validation / Dose response / Eye irritation / Draize score / データクリーニング / 予測 / 細胞毒性試験 / Draize評点 / ED_<50>推定 / バリデーション / 用量反応性 / 眼刺激性 / ドレイズスコア / comparison of tests / covariance matrix structure / elliptical population / construction method of upper bound / OC function and curve / Precision and sample size / experimental approximate upper bound / Hotelling's T^2-test / precision of asymptotic expansion for mula / 分散構造に基づく検定法の比較 / 楕円型母集団のもとでの漸近展開 / 数値実験による実験公式 / 最小二乗法 / 回帰分析 / HotellingのT^2-検定のOC関数 / 漸近展開近似の精度と標本 / 回帰係数に対する仮説検定 / 楕円型分布のもとでの推測 / 実験的近似上限 / 共分散構造 / 楕円型母集団 / 上限の構築法 / 精度と標本の大きさ / 精度の実験的近似上限 / HotellingのT^2-検定 / 漸近展開近似の精度 / Historical data / ED_<50> / Draize eye test / Preclinical trial / Statistical Analysis / Medicine / 毒性試験 / 変量原性試験 / 生物統計学 / 背景データ / 半数致死量 / ドレイズ試験 / 前臨床試験 / 統計解析 / 医薬品 / 欠測値データ / 同時信頼区間 / 多重比較 / 統計科学 / 漸近展開 / 統計理論 / 統計数学 Less

Extension of Matrix variate distribution
- Principal Investigator
  
  Hashiguchi Hiroki
- Project Period (FY)
  2018 – 2020
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12040:Applied mathematics and statistics-related
- Research Institution
  Tokyo University of Science
New test procedures under multivariate elliptical population and its applicationPrincipal Investigator
- Principal Investigator
  
  Iwashita Toshiya
- Project Period (FY)
  2018 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 60030:Statistical science-related
- Research Institution
  Tokyo University of Science
A study of multivariate multiple comparison procedure in non-regulardata and its applications
- Principal Investigator
  
  SEO Takashi
- Project Period (FY)
  2006 – 2008
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Statistical science
- Research Institution
  Tokyo University of Science
The Guidance of the Asymptotic Expansion Formulae on the Multivariate InferencePrincipal Investigator
- Principal Investigator
  
  IWASHITA Toshiya, 塩谷実
- Project Period (FY)
  1996 – 1998
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Statistical science
- Research Institution
  Meisei University
Validation study of assays alternative to animal experiments from a statistical viewpoint
- Principal Investigator
  
  YOSHIMURA Isao
- Project Period (FY)
  1995 – 1996
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Statistical science
- Research Institution
  Science University of Tokyo
Relation of the precision of asymptotic expoansions with sample sizes and dimensionality in statistical inference
- Principal Investigator
  
  SIOTANI Minoru
- Project Period (FY)
  1994 – 1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  Statistical science
- Research Institution
  Meisi University
Research on the method of data analysis for drug development
- Principal Investigator
  
  YOSHIMURA Isao
- Project Period (FY)
  1993 – 1994
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  Statistical science
- Research Institution
  Science University of Tokyo

All 2023 2020 2018 2008 2007

All Journal Article Presentation

[Journal Article] A gamma tail statistic and its asymptotics2023
- Author(s)
  Iwashita Toshiya、Klar Bernhard
- Journal Title
  
  Statistica Neerlandica
  
  Volume: 78 Issue: 2 Pages: 264-280
- DOI
  10.1111/stan.12316
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K11198
[Journal Article] A necessary test for elliptical symmetry based on the uniform distribution over the Stiefel manifold2020
- Author(s)
  Toshiya Iwashita and Bernhard Klar
- Journal Title
  
  SUT Journal of Marhematics
  
  Volume: 56 Pages: 129-145
- NAID
  40022483606
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K11198
[Journal Article] DISTRIBUTION OF THE LARGEST EIGENVALUE OF AN ELLIPTICAL WISHART MATRIX AND ITS SIMULATION2018
- Author(s)
  A. Shinozaki, H. Hashiguchi and T. Iwashita
- Journal Title
  
  Journal of the Japanese Society of Computational Statistics
  
  Volume: 30 Issue: 2 Pages: 1-12
- DOI
  10.5183/jjscs.1708001_244
- NAID
  130007386273
- ISSN
  0915-2350, 1881-1337
- Year and Date
  2018-04-20
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K03428, KAKENHI-PROJECT-18K11198
[Journal Article] A comparison of higher-order local powers of a class of oneway MANOVA tests under general distributions2008
- Author(s)
  Kakizawa, Y., Iwashita, T.
- Journal Title
  
  Journal of Multivariate Analysis 99
  
  Pages: 1128-1153
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18500218
[Journal Article] Hotelling's one and two-sample T2 tests and the multivariateBehrens-Fisher problem under nonnormality2008
- Author(s)
  Kakizawa, Y., Iwashita, T.
- Journal Title
  
  Journal of Statist ical Planning and In ference 138
  
  Pages: 3379-3404
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18500218
[Journal Article] Hotelling's one and two-sample T2 tests and the multivariate Behrens-Fisher problem under nonnormality2008
- Author(s)
  Kakizawa, Y. and Iwashita, T.
- Journal Title
  
  Journal of Statistical Planning and Inference 138
  
  Pages: 3379-3404
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18500218
[Journal Article] A comparison of higher-order local powers of a class of oneway MANOVA tests under general distributions2008
- Author(s)
  Kakizawa, Y. and Iwashita, T.
- Journal Title
  
  Journal of Multivariate Analysis 99
  
  Pages: 1128-1153
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18500218
[Presentation] A Necessary test for Elliptical Symmetry2018
- Author(s)
  Toshiya Iwashita
- Organizer
  DAGStat
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K11198
[Presentation] 楕円対称性の必要性検定2018
- Author(s)
  岩下登志也
- Organizer
  科研費シンポジウム「多変量データ解析法における理論と応用」
- Data Source
  KAKENHI-PROJECT-18K11198
[Presentation] Testing equality of two mean vectors with uniform covariance structure when missing observations occur2007
- Author(s)
  Kazuyuki Koizumi, Toshiya Iwashita, Takashi Seo
- Organizer
  5th International Conference on Multiple Comparison Procedures(MCP2007)
- Place of Presentation
  University Campus-Altes AKH, ウィーン(オーストリア)
- Year and Date
  2007-07-10
- Data Source
  KAKENHI-PROJECT-18500218

1. YOSHIMURA Isao (30010797)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
2. SIOTANI Minoru (50116597)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
3. SEO Takashi (00266909)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
4. NIKI Naoto (10000209)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. HAGA Toshiro (40146709)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. HIRAKAWA Kozaburo (80084367)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. UKITA Yoshimasa (70168673)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. YOSHIHIDE Kakizawa (30281778)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. Hashiguchi Hiroki (50266920)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. 中川重和 (90248203)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Iwashita Toshiya 岩下 登志也

IWASHITA Toshiya 岩下 登志也

Research Projects

Research Products

Co-Researchers

Extension of Matrix variate distribution

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

New test procedures under multivariate elliptical population and its applicationPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

A study of multivariate multiple comparison procedure in non-regulardata and its applications

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

The Guidance of the Asymptotic Expansion Formulae on the Multivariate InferencePrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Validation study of assays alternative to animal experiments from a statistical viewpoint

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Relation of the precision of asymptotic expoansions with sample sizes and dimensionality in statistical inference

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Research on the method of data analysis for drug development

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] A gamma tail statistic and its asymptotics2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] A necessary test for elliptical symmetry based on the uniform distribution over the Stiefel manifold2020

Author(s)

Journal Title

NAID

Data Source

[Journal Article] DISTRIBUTION OF THE LARGEST EIGENVALUE OF AN ELLIPTICAL WISHART MATRIX AND ITS SIMULATION2018

Author(s)

Journal Title

DOI

NAID

ISSN

Year and Date

Language

Data Source

[Journal Article] A comparison of higher-order local powers of a class of oneway MANOVA tests under general distributions2008

Author(s)

Journal Title

Data Source

[Journal Article] Hotelling's one and two-sample T2 tests and the multivariateBehrens-Fisher problem under nonnormality2008

Author(s)

Journal Title

Data Source

[Journal Article] Hotelling's one and two-sample T2 tests and the multivariate Behrens-Fisher problem under nonnormality2008

Author(s)

Journal Title

Data Source

[Journal Article] A comparison of higher-order local powers of a class of oneway MANOVA tests under general distributions2008

Author(s)

Iwashita Toshiya 岩下登志也

IWASHITA Toshiya 岩下登志也