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	6,325,000Yen
Study on Statistical Inference and Its Applications	1997 -- (current)		/
Theoretical Foundation of Quantum Inference and Its Applications	2002 -- 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 -- 2015		Japan Society of for the Promotion of Science/基盤研究(B)	7,670,000Yen
統計学における逆問題的構造の解明とその応用	2009 -- 2011		Japan Society of for the Promotion of Science/挑戦的萌芽研究	3,400,000Yen
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 -- 2010		Japan Society of for the Promotion of Science/基盤研究(B)	18,590,000Yen
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 -- 2006		Japan Society of for the Promotion of Science/萌芽研究	3,300,000Yen
量子推測理論の数理統計学的基礎とその応用	2002 -- 2005		Japan Society of for the Promotion of Science/基盤研究(A)	40,980,000Yen
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 -- 2003		Japan Society of for the Promotion of Science/基盤研究(B)	13,700,000Yen

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Career history

1978-10 -- 1987-03	University of Electro-Communications Associate professor
1987-04 -- 2009-03	University 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

-- 1969	Waseda University Faculty of Science and Engineering 数学	Graduated
-- 1971	Waseda 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
  CiNii
• 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

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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
  Springer, 1981-01
• The Structure of Asymptotic Deficiency of Estimators
  M. Akahira
  Queen's University Press, 1986-01
• Non-Regular Statistical Estimation
  M. Akahira; K. Takeuchi
  Springer, 1995-01
• 統計解析入門
  赤平昌文
  森北出版, 2003-06
• Joint Statistical Papers of Akahira and Takeuchi
  M. Akahira; K. Takeuchi
  World Scientific, 2003-01

Teaching

2008-04 -- 2008-07	Colloquim on Pure and Applied Sciences	University of Tsukuba.
2008-04 -- 2009-03	Seminar on Information Mathematics	University of Tsukuba.
2008-04 -- 2009-03	Resarch in Information Mathematics V	University of Tsukuba.
2008-04 -- 2009-03	Resarch in Information Mathematics IV	University of Tsukuba.
2008-04 -- 2009-03	Resarch in Information Mathematics III	University of Tsukuba.
2008-04 -- 2009-03	Resarch in Information Mathematics II	University of Tsukuba.
2008-04 -- 2009-03	Resarch in Information Mathematics I	University of Tsukuba.
2007-04 -- 2007-07	Exercises in Calculus I	University of Tsukuba.
2007-08 -- 2007-11	Exercises in Calculus II	University of Tsukuba.
2007-08 -- 2007-11	Exercises in Linear Algebra II	University of Tsukuba.

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Professional activities

2008 -- 2009	JAPANESE SOCIETY OF APPLIED STATISTICS	監事
1994 -- 1995	JAPANESE SOCIETY OF APPLIED STATISTICS	評議員
2000 -- 2001	JAPANESE SOCIETY OF APPLIED STATISTICS	評議員
2010 -- 2011	JAPANESE SOCIETY OF APPLIED STATISTICS	評議員
1997 -- 1998	日本数学会	評議員
2010 -- 2011	THE JAPAN STATISTICAL SOCIETY	評議員
2002 -- 2004	THE JAPAN STATISTICAL SOCIETY	理事

(Last updated: 2018-04-24)