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Akahira Masafumi

Affiliation
University of Tsukuba
Official title
Professor Emeritus
Research fields
Foundations of mathematics/Applied mathematics
Statistical science
Research keywords
Mathematical Statistics
Research projects
統計的領域推定における新しいリスク評価と検定論への応用2005 -- 2008-03赤平昌文/学内共同研究6325000
Study on Statistical Inference and Its Applications1997 -- (current)/
Theoretical Foundation of Quantum Inference and Its Applications2002 -- 2005/
生物情報を解明するための統計学的基礎理論とその応用2007 -- (current)/
統計的推測における非正則構造の解明とその応用2011 -- 2015Japan Society of for the Promotion of Science/基盤研究(B)7670000
統計学における逆問題的構造の解明とその応用2009 -- 2011Japan Society of for the Promotion of Science/挑戦的萌芽研究3400000
生物情報を解明するための統計数学的基礎理論とその応用2007 -- 2010Japan Society of for the Promotion of Science/基盤研究(B)18590000
統計的検定論を超える新しい決定論的アプローチの試み2004 -- 2006Japan Society of for the Promotion of Science/萌芽研究3300000
量子推測理論の数理統計学的基礎とその応用2002 -- 2005Japan Society of for the Promotion of Science/基盤研究(A)40980000
統計的領域推定における精確な推定方式の開発と実用化の試み2000 -- 2003Japan Society of for the Promotion of Science/基盤研究(B)13700000
Career history
1978-10 -- 1987-03University of Electro-Communications Associate professor
1987-04 -- 2009-03University of Tsukuba Professor
2007-04 -- 2009-03筑波大学 大学院 数理物質科学研究科長
2006-08 -- (current)日本学術会議連携会員
2009-04 -- 2013-03筑波大学 Executive Director & Vice Predident
Academic background
-- 1969Waseda University Faculty of Science and Engineering 数学Graduated
-- 1971Waseda University Graduate School, Division of Science and Engineering 数学Completed
Degree
理学博士Waseda University
理学修士Waseda University
Academic societies
-- (current)Bernoulli Society for Mathematical Statistics and Probability
-- (current)Institute of Mathematical Statistics
-- (current)International Statistical Institute
-- (current)JAPANESE SOCIETY OF APPLIED STATISTICS
-- (current)日本数学会
-- (current)THE JAPAN STATISTICAL SOCIETY
Honors & Awards
2013-04-16平成25年度科学技術分野の文部科学大臣表彰 科学技術賞(研究部門)
2007-09-08日本統計学会賞
2004-09-21日本数学会解析学賞
Articles
  • Asymptotic comparison of estimators for a family of truncated distributions (Asymptotic Expansions for Various Models and Their Related Topics)
    大谷内 奈穂; 赤平 昌文
    RIMS Kokyuroku/1860/pp.129-139, 2013-11
  • Characterizations of prediction sufficiency(adequacy) in terms of risk functions
    K. Takeuchi; M. Akahira
    Annals of Statistics/3(4)/p.1018-1024, 1975-01
  • Extension of Edgeworth type expansion of the distribution of the sums of i. i. d. random variables in non-regular cases
    K. Takeuchi; M. Akahira
    Annals of the Institute of Statistical Methamatics/29(3)/p.101-118, 1977-01
  • A note on prediction sufficiency(adequacy)and sufficiency
    M. Akahira; K. Takeuchi
    Australian Journal of Statistics/22(3)/p.332-335, 1980-01
  • Asymptotic optimality of estimators in non-regular cases
    M. Akahira
    Annals of the Institute of Statistical Mathematics/34(1)/p.69-82, 1982-01
  • On prediction sufficiency
    M. Akahira
    Selecta Statistica Canadiana/(6)/p.1-19, 1982-01
  • Second order asymptotic optimality of estimators in an autoregressive process with unknown mean
    M. Akahira
    Selecta Statistica Canadiana/(6)/p.19-36, 1982-01
  • A note on minimum variance unbiased estimation when the Fisher information is infinity
    M. Akahira; K. Takeuchi
    Reports of Statistical Application Research, JUSE/32(3)/p.17-22, 1985-01
  • Estimation of a common parameter for pooled samples from the uniform distributions
    M. Akahira; K. Takeuchi
    Annals of the Institute of Statistical Mathematics/37(1)/p.131-140, 1985-01
  • A note on minimum variance
    K. Takeuchi; M. Akahira
    Metrika/33(2)/p.85-91, 1986-01
  • Bhattacharrya bound of variances of unbiased estimators in non-regular cases
    M. Akahira; M. L. Puri; K. Takeuchi
    Annals of the Institute of Statistical Mathematics/38(1)/p.35-44, 1986-01
  • On the bound of the asymptotic distribution of estimators when the maximum order of consistency depends on the parameter
    M. Akahira; K. Takeuchi
    Publications de l'Institute de Statistique, Univ. de Paris/31(1)/p.1-16, 1986-01
  • A note on optimum spacing of observations from a continuous time simple Markov process
    K. Takeuchi; M. Akahira
    Metrika/33(3)/p.217-222, 1986-01
  • Locally minimum variance unbiased estimator in a discontinuous density function(共著)
    M. Akahira; K. Takeuchi
    Metrika/34(1)/p.1-15, 1987-01
  • On the definition of asymptotic expectation
    M. Akahira; K. Takeuchi
    Advances in the Statistical Sciences, Reidel Pub. Comp./(2)/p.199-208, 1987-01
  • The lower bound for the variance of unbiased estimators for one-directional family of distributions
    M. Akahira; K. Takeuchi
    Annals of the Institute of Statistical Mathematics/39(3)/p.593-610, 1987-01
  • Second order asymptotic comparison of estimators of a common parameter in the double exponential case
    M. Akahira
    Annals of the Institute of Statistical Mathematics/39(1)/p.25-36, 1987-01
  • Second order asymptotic optimality of estimators for a density with finite cusps
    M. Akahira
    Annals of the Institute of Statistical Mathematics/40(2)/p.311-328, 1988-01
  • Second order asymptotic efficiency in terms of asymptotic variances of the sequential maximum likelihood estimation procedures
    K. Takeuchi; M. Akahira
    Statistical Theory and Data Analsyis, North-Holland/(2)/p.191-196, 1988-01
  • Second and third order asymptotic completeness of the class of estimators
    M. Akahira; F. Hirakawa; K. Takeuchi
    Lecture Notes in Mathematics, Springer-Verlag/(1299)/p.11-27, 1988-01
  • Second order asymptotic properties of the generalized Bayes estimators for a family of non-regular distributions
    M. Akahira
    Statistical Theory and Data Analysis, North-Holland/(2)/p.87-100, 1988-01
  • Higher order asymptotics in estimation for two-sided Weibull type distributions
    M. Akahira; K. Takeuchi
    Annals of the Institute of Statistical Mathematics/41(4)/p.725-752, 1989-01
  • Behaviour of jackknife estimators in terms of asymptotic deficiency under true and assumed models
    M. Akahira
    Journal of Japan Statistical Society/19(2)/p.179-196, 1989-01
  • Third order asymptotic efficiency of the sequential maximum likelihood estimation procedure
    M. Akahira; K. Takeuchi
    Sequential Analysis/8(4)/p.333-359, 1989-01
  • First order asymptotic efficiency in semiparametric models implies infinite asymptotic deficiency
    M. Akahira; K. Takeuchi
    Publications de l'Institute de Statistique, Univ. de Paris/35(1)/p.3-9, 1990-01
Books
  • 統計解析入門
    赤平 昌文
    2003-06
  • Asymptotic Efficiency of Statistical Estimators: Concepts and Higher Order Efficiency
    M. Akahira; K. Takeuchi
    1981-01
  • The Structure of Asymptotic Deficiency of Estimators
    M. Akahira
    1986-01
  • Non-Regular Statistical Estimation
    M. Akahira; K. Takeuchi
    1995-01
  • 統計解析入門
    赤平昌文
    2003-06
  • Joint Statistical Papers of Akahira and Takeuchi
    M. Akahira; K. Takeuchi
    2003-01
Teaching
2008-04 -- 2008-07Colloquim on Pure and Applied SciencesUniversity of Tsukuba.
2008-04 -- 2009-03Seminar on Information MathematicsUniversity of Tsukuba.
2008-04 -- 2009-03Resarch in Information Mathematics VUniversity of Tsukuba.
2008-04 -- 2009-03Resarch in Information Mathematics IVUniversity of Tsukuba.
2008-04 -- 2009-03Resarch in Information Mathematics IIIUniversity of Tsukuba.
2008-04 -- 2009-03Resarch in Information Mathematics IIUniversity of Tsukuba.
2008-04 -- 2009-03Resarch in Information Mathematics IUniversity of Tsukuba.
2007-04 -- 2007-07Exercises in Calculus IUniversity of Tsukuba.
2007-08 -- 2007-11Exercises in Calculus IIUniversity of Tsukuba.
2007-08 -- 2007-11Exercises in Linear Algebra IIUniversity of Tsukuba.
Professional activities
2008 -- 2009JAPANESE SOCIETY OF APPLIED STATISTICS監事
1994 -- 1995JAPANESE SOCIETY OF APPLIED STATISTICS評議員
2000 -- 2001JAPANESE SOCIETY OF APPLIED STATISTICS評議員
2010 -- 2011JAPANESE SOCIETY OF APPLIED STATISTICS評議員
1997 -- 1998日本数学会評議員
2010 -- 2011THE JAPAN STATISTICAL SOCIETY評議員
2002 -- 2004THE JAPAN STATISTICAL SOCIETY理事

(Last updated: 2016-07-08)