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SHEENA YO

Academic OrganizationAcademic Assembly School of Humanities and Social Sciences Institute of Social SciencesTEL
Education and Research OrganizationInterdisciplinary Cluster for Cutting Edge Research Research Center for Social SystemsFAX
PositionProfessorMail Address
AddressWeb site

Modified:09/17/2019

Profile

Assigned Class
Faculty of Economics and Law Department of Economics
Research Field
Statistical science
Current Subject
Multivariate Estimation in view of Statistical Decision Theory

Descriptive Statistics Using Computer Software

Information Geometry

Academic Background
Graduate School
The University of Tokyo , (Graduate School, Division of Economics) , 1992

College
The University of Tokyo , (Faculty of Laws) , 1986

Degree
Doctor of Economics , The University of Tokyo
Research Career
Research Career
2004- , Shinshu University, Faculty of Economics Professor
1995-2004 , Shinshu University, Faculty of Economics Assistant Professor
1992-1995 , Shinshu University, Faculty of Economics Lecturer

Other Career
2007-2009

Research

Books, Articles, etc.
Books
統計学
東京図書 , :87-116 2013
Author:椎名 洋


大学生の出会う経済・経営問題
創成社 , :235-244 2012
Author:椎名 洋


Articles
Estimation of a continuous distribution on the real line by discretization methods
Metrika,82(3):339-360 2018
Author:Yo Sheena


Asymptotic expansion of the risk of maximum likelihood estimator with respect to $\alpha$-divergence
Communications in Statistics –Theory and Methods--,47(16):4059-4087 2018
Author:Yo Sheena


Asymptotic Expansion of Risk for a Regression Model with respect to $\alpha$-Divergence with an Application to the Sample Size Problem
Far East Journal of Theoretical Statistics,53(4):187-230 2017
Author:Yo Sheena


Inference on the eigenvalues of the covariance matrix of a multivariate normal distribution -geometrical view-
Journal of Statistical Planning and Inference,150:66-83 2014
Author:Yo Sheena


Modified estimators of the contribution rates of population eigenvalues
JOURNAL OF MULTIVARIATE ANALYSIS,115:301-316 2013(Mar.)
Author:Yo Sheena


Admissible estimator of the eigenvalues of the variance-covariance matrix for multivariate normal distributions
JOURNAL OF MULTIVARIATE ANALYSIS,102(4):801-815 2011(Apr.)
Author:Yo Sheena; Akimichi Takemura


Serum Fragmented Cytokeratin 18 Levels Reflect the Histologic Activity Score of Nonalcoholic Fatty Liver Disease More Accurately Than Serum Alanine Aminotransferase Levels
JOURNAL OF CLINICAL GASTROENTEROLOGY,44(6):440-447 2010(Jul.)
Author:Tsutsui, Masaru; Tanaka, Naoki; Kawakubo, Masatomo; Sheena, Yo; Horiuchi, Akira; Komatsu, Michiharu; Nagaya, Tadanobu; Joshita, Satoru; Umemura, Takeji; Ichijo, Tetsuya; Matsumoto, Akihiro; Yoshizawa, Kaname; Aoyama, Toshifumi; Tanaka, Eiji; Sano, Kenji


Asymptotic Distribution of Wishart Matrix for Block-wise Dispersion of Population Eigenvalues
Journal of Multivariate Analysis,99(4):751-775 2008
Author:Yo Sheena; Akimichi Takemura


Inference on Eigenvalues of Wishart Distribution Using Asymptotics with respect to the Dispersion of Population Eigenvalues
Sankhya,69(4):717-733 2007
Author:Yo Sheena; Akimichi Takemura


An asymptotic expansion of Wishart distribution when the population eigenvalues are infinitely dispersed
Statistical Methodology,4(2):158-184 2007
Author:Yo Sheena; Akimichi Takemura


Useful parameters for distinguishing nonalcoholic steatohepatitis with mild steatosis from cryptogenic chronic hepatitis in the Japanese population
LIVER INTERNATIONAL,26(8):956-963 2006
Author:Tanaka, N; Tanaka, E; Sheena, Y; Komatsu, M; Okiyama, W; Misawa, N; Muto, H; Umemura, T; Ichijo, T; Matsumoto, A; Yoshizawa, K; Horiuchi, A; Kiyosawa, K


Magnetic resonance and computed tomography-based scoring system for the differential diagnosis of vertebral fractures caused by osteoporosis and malignant tumors
JOURNAL OF ORTHOPAEDIC SCIENCE,10(4):345-352 2005
Author:Yuzawa, Y; Ebara, S; Kamimura, M; Tateiwa, Y; Kinoshita, T; Itoh, H; Takahashi, J; Karakida, O; Sheena, Y; Takaoka, K


Order-preserving estimators and an inequality on the integration of zonal polynomial
Communications in Statistics -Theory and Methods-,34(7):1503-1516 2005
Author:Yo Sheena


New estimator for functions of the canonical correlation coefficients
Journal of Statistical Planning and Inference,131(1):41-61 2005
Author:Yo Sheena and Arjun, K. Gupta


Distribution of eigenvalues and eigenvectors of Wishart matrix when the population eigenvalues are infinitely dispersed and its application to minimax estimation of covariance matrix
Journal of Multivariate Analysis,94:271--299 2005
Author:Akimichi Takemura and Yo Sheena


Estimation of the eigenvalues of noncentrality parameter matrix in noncentral Wishart distribution
Journal of Multivariate Analysis,93(1):1-20 2005
Author:Arjun, K. Gupta, Yo Sheena and Yasunori Fujikoshi


Estimation of a multivariate normal covariance matrix under a certain structure
Statistics,38(5):371--379 2004(Oct.)
Author:Arjun, K. Gupta and Yo Sheena


New estimators of discriminant coefficients as the gradient of log-odds
Annals of the Institute of Statistical Mathematics,56(4):757-770 2004
Author:Yo Sheena and Arjun K. Gupta


Estimation of the eigenvalues of noncentrality parameter in matrix variate noncentral beta distribution
Annals of the Institute of Statistical Mathematics,56(1):101-125 2004
Author:Yo Sheena, Arjun K. Gupta, Yasunori Fujikoshi


On Minimaxity of the Normal Precision Matrix Estimator of Krishnamoorthy and Gupta
Statistics,37(5):387-399 2003(Oct.)
Author:Yo Sheena


Estimation of the multivariate normal covariance matrix under some restrictions
Statistics and Decisions,21:327-342 2003
Author:Yo Sheena, Arjun K. Gupta


On Minimaxity of some orthogonally Invariant Estimators of Bivariate Normal Dispersion Matrix
Journal of Japan Statistical Society,32(2):193-207 2002
Author:Yo Sheena


Inadmissibility of Non-order-Preserving Orthogonally Invariant Estimators of the Precision Matrix under Stein's Loss
Calcutta Statistical Association Bulletin,53:185-202 2002
Author:Yo Sheena


Early-phase enhanced inflammatory reaction after spinal instrumentation surgery
SPINE,26(15):1698-1704 2001
Author:Takahashi, J; Ebara, S; Kamimura, M; Kinoshita, T; Itoh, H; Yuzawa, Y; Sheena, Y; Takaoka, K


Unbiased estimator of risk for an orthogonally invariant estimator of a covariance matrix
Journal of Japan Statistical Society,25(1):35-48 1995
Author:Yo Sheena


Inadmissibility of non-order-preserving orthogonally invariant estimators of the covariance matrix in the case of Stein's loss
Journal of Multivariate Analysis,41(1):117-131 1992
Author:Yo Sheena, Akimichi Takemura


Presentations
Asymptotic Expansion of Divergence between Parametric Probability Distributions
統計数理研究所セミナー 2016(Oct. 05)
Author:椎名洋


パラメトリックな確率分布間のDivergenceの漸近展開
日本統計学会 , 2015年度統計関連学会連合大会 2015(Sep. 08)
Author:椎名 洋

Research Activities
Journal Editorial Board
2007-2008 , 日本統計学会
2014-2016 , 応用統計学会