Ajit C. Tamhane
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JEROME P. REITER Department of Statistical Science, Duke University Box 90251, Durham, NC 27708 Phone: 919 668 5227
JEROME P. REITER Department of Statistical Science, Duke University Box 90251, Durham, NC 27708 phone: 919 668 5227. email: [email protected]. September 26, 2021 EDUCATION Ph.D. in Statistics, Harvard University, 1999. A.M. in Statistics, Harvard University, 1996. B.S. in Mathematics, Duke University, 1992. DISSERTATION \Estimation in the Presence of Constraints that Prohibit Explicit Data Pooling." Advisor: Donald B. Rubin. POSITIONS Academic Appointments Professor of Statistical Science and Bass Fellow, Duke University, 2015 - present. Mrs. Alexander Hehmeyer Professor of Statistical Science, Duke University, 2013 - 2015. Mrs. Alexander Hehmeyer Associate Professor of Statistical Science, Duke University, 2010 - 2013. Associate Professor of Statistical Science, Duke University, 2009 - 2010. Assistant Professor of Statistical Science, Duke University, 2006 - 2008. Assistant Professor of the Practice of Statistics and Decision Sciences, Duke University, 2002 - 2006. Lecturer in Statistics, University of California at Santa Barbara, 2001 - 2002. Assistant Professor of Statistics, Williams College, 1999 - 2001. Other Appointments Chair, Department of Statistical Science, Duke University, 2019 - present. Associate Chair, Department of Statistical Science, Duke University, 2016 - 2019. Mathematical Statistician (part-time), U. S. Bureau of the Census, 2015 - present. Associate/Deputy Director of Information Initiative at Duke, Duke University, 2013 - 2019. Social Sciences Research Institute Data Services Core Director, Duke University, 2010 - 2013. Interim Director, Triangle Research Data Center, 2006. Senior Fellow, National Institute of Statistical Sciences, 2002 - 2005. 1 ACADEMIC HONORS Keynote talk, 11th Official Statistics and Methodology Symposium (Statistics Korea), 2021. Fellow of the Institute of Mathematical Statistics, 2020. Clifford C. Clogg Memorial Lecture, Pennsylvania State University, 2020 (postponed due to covid-19). -
Visualizing Research Collaboration in Statistical Science: a Scientometric
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Library Philosophy and Practice (e-journal) Libraries at University of Nebraska-Lincoln 9-13-2019 Visualizing Research Collaboration in Statistical Science: A Scientometric Perspective Prabir Kumar Das Library, Documentation & Information Science Division, Indian Statistical Institute, 203 B T Road, Kolkata - 700108, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/libphilprac Part of the Library and Information Science Commons Das, Prabir Kumar, "Visualizing Research Collaboration in Statistical Science: A Scientometric Perspective" (2019). Library Philosophy and Practice (e-journal). 3039. https://digitalcommons.unl.edu/libphilprac/3039 Viisualliiziing Research Collllaborattiion iin Sttattiisttiicall Sciience:: A Sciienttomettriic Perspecttiive Prrabiirr Kumarr Das Sciienttiiffiic Assssiissttantt – A Liibrrarry,, Documenttattiion & IInfforrmattiion Sciience Diiviisiion,, IIndiian Sttattiisttiicall IInsttiittutte,, 203,, B.. T.. Road,, Kollkatta – 700108,, IIndiia,, Emaiill:: [email protected] Abstract Using Sankhyā – The Indian Journal of Statistics as a case, present study aims to identify scholarly collaboration pattern of statistical science based on research articles appeared during 2008 to 2017. This is an attempt to visualize and quantify statistical science research collaboration in multiple dimensions by exploring the co-authorship data. It investigates chronological variations of collaboration pattern, nodes and links established among the affiliated institutions and countries of all contributing authors. The study also examines the impact of research collaboration on citation scores. Findings reveal steady influx of statistical publications with clear tendency towards collaborative ventures, of which double-authored publications dominate. Small team of 2 to 3 authors is responsible for production of majority of collaborative research, whereas mega-authored communications are quite low. -
A Nonparametric Estimator of Heterogeneity Variance with Applications to SMR- and Proportion-Data
Biometrical Journal 42 )2000) 3, 321±334 A Nonparametric Estimator of Heterogeneity Variance with Applications to SMR- and Proportion-Data Dankmar BoÈhning Department of Epidemiology Institute for Social Medicine and Medical Psychology Free University Berlin Germany Jesus Sarol Jr. Department of Epidemiology and Biostatistics The College of Public Health University of the Philippines Manila Philippines Summary In this paper the situation of extra population heterogeneity is discussed from a analysis of variance point of view. We first provide a non-iterative way of estimating the variance of the heterogeneity distribution without estimating the heterogeneity distribution itself for Poisson and binomial counts. The consequences of the presence of heterogeneity in the estimation of the mean are discussed. We show that if the homogeneity assumption holds, the pooled mean is optimal while in the presence of strong heterogeneity, the simple )arithmetic) mean is an optimal estimator of the mean SMR or mean proportion. These results lead to the problem of finding an optimal estimator for situations not repre- sented by these two extreme cases. We propose an iterative solution to this problem. Illustrations for the application of these findings are provided with examples from various areas. Key words: Population heterogeneity; Random effects model; Moment estimator; Variance separation; Confidence interval estimation adjusted for unob- served heterogeneity. 1. Introduction In a variety of biometric applications the situation of extra-population heteroge- neity occurs. In particular, this is the case if there is good reason to model the variable of interest Y through a density of parametric form p)y, q) with a scalar parameter q. -
A Simple Method for Correcting for the Will Rogers Phenomenon with Biometrical Applications
University of Plymouth PEARL https://pearl.plymouth.ac.uk Faculty of Science and Engineering School of Engineering, Computing and Mathematics 2020-01-20 A simple method for correcting for the Will Rogers phenomenon with biometrical applications Stander, M http://hdl.handle.net/10026.1/15227 10.1002/bimj.201900199 Biometrical Journal: journal of mathematical methods in biosciences Wiley-VCH Verlag All content in PEARL is protected by copyright law. Author manuscripts are made available in accordance with publisher policies. Please cite only the published version using the details provided on the item record or document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content should be sought from the publisher or author. Biometrical Journal 52 (2010) 61, zzz–zzz / DOI: 10.1002/bimj.200100000 A simple method for correcting for the Will Rogers phenomenon with biometrical applications Mark Stander∗ 1 and Julian Stander 2 1 BAE Systems 6 Carlton Gardens LONDON SW1Y 5AD United Kingdom Email: [email protected] 2 School of Engineering, Computing and Mathematics University of Plymouth Drake Circus PLYMOUTH PL4 8AA United Kingdom Email: [email protected] Received zzz, revised zzz, accepted zzz In its basic form the Will Rogers phenomenon takes place when an increase in the average value of each of two sets is achieved by moving an element from one set to another. This leads to the conclusion that there has been an improvement, when in fact essentially nothing has changed. Extended versions of this phenomenon can occur in epidemiological studies, rendering their results unreliable. -
RABI BHATTACHARYA the Department of Mathematics the University of Arizona 617 N Santa Rita Tucson, AZ 85721
RABI BHATTACHARYA The Department of Mathematics The University of Arizona 617 N Santa Rita Tucson, AZ 85721. 1. Degrees Ph.D. (Statistics) University of Chicago, 1967. 2. Positions Held: Regular Positions 1967-72 Assistant Professor of Statistics, Univ. of California, Berkeley. 1972-77 Associate Professor of Mathematics, University of Arizona. 1977-82 Professor, University of Arizona. 1982-02 Professor, Indiana University (Dept. of Mathematics). 2002- Professor of Mathematics and member of BIO5 faculty, University of Arizona. Visiting Positions 1978-79 Visiting Professor, Indian Statistical Institute. 1979 (Summer) Distinguished Visiting Professor, Math. and Civil Engi- neering, University of Mississippi. 1992 Visiting Professor, University of Bielefeld, Germany, June 26-July 28. 1994 Visiting Professor, University of Bielefeld, Germany, Feb. 15-April 15. 1994 Visiting Professor, University of G¨ottingen, Germany, April 15-June 15. 1996 Visiting Professor, University of Bielefeld, Germany, June 8-July 9. 2000 Visiting Scholar, Stanford University, June-September. 2000-01 Visiting Scholar, Oregon State University. 1 3. Honors and Awards: 1977 Special Invited Paper, Annals of Probability 1978 IMS Fellow 1989 DMV Lecturer (by invitation of the German Mathematical Society) 1994-95 Humboldt Prize (Alexander von Humboldt Forschungspreis) 1996 IMS Special Invited Lecture, IMS Annual Meeting, Chicago (Medal- lion Lecture) 1999 Special Invited Paper, Annals of Applied Probability 2000 Guggenheim Fellowship 4. Professional Associations: Fellow of Institute of Mathematical Statistics American Mathematical Society 5. Research Interests: 1. Markov processes in discrete and continuous time and stochastic differen- tial equations, and their applications to equations of mathematical physics, science, engineering and economics. 2. Analytical theory and refinements of central limit theorems. -
Rank Full Journal Title Journal Impact Factor 1 Journal of Statistical
Journal Data Filtered By: Selected JCR Year: 2019 Selected Editions: SCIE Selected Categories: 'STATISTICS & PROBABILITY' Selected Category Scheme: WoS Rank Full Journal Title Journal Impact Eigenfactor Total Cites Factor Score Journal of Statistical Software 1 25,372 13.642 0.053040 Annual Review of Statistics and Its Application 2 515 5.095 0.004250 ECONOMETRICA 3 35,846 3.992 0.040750 JOURNAL OF THE AMERICAN STATISTICAL ASSOCIATION 4 36,843 3.989 0.032370 JOURNAL OF THE ROYAL STATISTICAL SOCIETY SERIES B-STATISTICAL METHODOLOGY 5 25,492 3.965 0.018040 STATISTICAL SCIENCE 6 6,545 3.583 0.007500 R Journal 7 1,811 3.312 0.007320 FUZZY SETS AND SYSTEMS 8 17,605 3.305 0.008740 BIOSTATISTICS 9 4,048 3.098 0.006780 STATISTICS AND COMPUTING 10 4,519 3.035 0.011050 IEEE-ACM Transactions on Computational Biology and Bioinformatics 11 3,542 3.015 0.006930 JOURNAL OF BUSINESS & ECONOMIC STATISTICS 12 5,921 2.935 0.008680 CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS 13 9,421 2.895 0.007790 MULTIVARIATE BEHAVIORAL RESEARCH 14 7,112 2.750 0.007880 INTERNATIONAL STATISTICAL REVIEW 15 1,807 2.740 0.002560 Bayesian Analysis 16 2,000 2.696 0.006600 ANNALS OF STATISTICS 17 21,466 2.650 0.027080 PROBABILISTIC ENGINEERING MECHANICS 18 2,689 2.411 0.002430 BRITISH JOURNAL OF MATHEMATICAL & STATISTICAL PSYCHOLOGY 19 1,965 2.388 0.003480 ANNALS OF PROBABILITY 20 5,892 2.377 0.017230 STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT 21 4,272 2.351 0.006810 JOURNAL OF COMPUTATIONAL AND GRAPHICAL STATISTICS 22 4,369 2.319 0.008900 STATISTICAL METHODS IN -
Ronald Christensen
Ronald Christensen Professor of Statistics University of New Mexico Department of Mathematics and Statistics EDUCATION: Ph.D., Statistics, University of Minnesota, 1983. M.S., Statistics, University of Minnesota, 1976. B.A., Mathematics, University of Minnesota, 1974. EXPERIENCE: 1994- Professor, Department of Mathematics and Statistics, University of New Mexico. 1998-2001, 2003- Founding Director, Statistics Clinic, University of New Mexico. 1988-1994 Associate Professor, Department of Mathematics and Statistics, University of New Mexico. 1982-1988 Assistant Professor, Department of Mathematical Sciences, Montana State Uni- versity. 1994 Visiting Professor, Department of Mathematics and Statistics, University of Canterbury, Chch., N.Z. 1987 Visiting Assistant Professor, Department of Theoretical Statistics, University of Minnesota. RESEARCH INTERESTS: Linear Models Bayesian Inference Log-linear and Logistic Regression Models Statistical Methods SOCIETIES AND HONORS: Fellow of the American Statistical Association, 1996 Fellow of the Institute of Mathematical Statistics, 1998 International Biometric Society American Society for Quality Phi Beta Kappa 1 PUBLICATIONS: 1. Christensen, Ronald (2007). \Notes on the decompostion of effects in full factorial experimental designs." Quality Engineering, accepted. (Letter.) 2. Yang, Mingan, Hanson, Timothy, and Christensen, Ronald (2007). \Nonparametric Bayesian estimation of a bivariate density with interval censored data." Statistics in Medicine, under review. 3. Christensen, Ronald (2007). \Discussion: Dimension reduction, nonparametric regres- sion, and multivariate linear models." Statistical Science, accepted. 4. Christensen, Ronald and Johnson, Wesley (2007). \A Conversation with Seymour Geisser." Statistical Science, accepted. 5. Christensen, Ronald (2006). \Comment on Monahan (2006)." The American Statisti- cian, 60, 295. 6. Christensen, Ronald (2006). \General prediction theory and the role of R2." The American Statistician, under revision. -
An Information Theoretical Method for Analyzing Unreplicated Designs with Binary Response
REVSTAT – Statistical Journal Volume 17, Number 3, July 2019, 383–399 AN INFORMATION THEORETICAL METHOD FOR ANALYZING UNREPLICATED DESIGNS WITH BINARY RESPONSE Authors: Krystallenia Drosou – Department of Mathematics, National Technical University of Athens, Athens, Greece [email protected] Christos Koukouvinos – Department of Mathematics, National Technical University of Athens, Athens, Greece [email protected] Received: February 2017 Revised: March 2017 Accepted: April 2017 Abstract: • The analysis of unreplicated factorial designs constitutes a challenging but difficult issue since there are no degrees of freedom so as to estimate the error variance. In the present paper we propose a method for screening active effects in such designs, as- suming Bernoulli distributed data rather than linear; something that hasn’t received much attention yet. Specifically, we develop an innovating algorithm based on an information theoretical measure, the well-known symmetrical uncertainty, so that it can measure the relation between the response variable and each factor separately. The powerfulness of the proposed method is revealed via both, a thorough simulation study and a real data set analysis. Key-Words: • two-level factorial designs; unreplicated experiments; generalized linear models; symmetrical uncertainty. AMS Subject Classification: • 62-07, 62K15, 62J12. 384 Krystallenia Drosou and Christos Koukouvinos Analysis of Unreplicated Designs with Binary Response 385 1. INTRODUCTION Factorial designs constitute a powerful tool especially in screening experi- ments where the goal is to identify the factors with a significant impact on the response of interest. Although two-level factorial designs are commonly used as experimental plans, the number of runs grows exponentially as the number of factors increases; thus, in case when the replication of the experiment is pro- hibitive due to economical or technical issues, unreplicated designs constitute an appropriate choice. -
Abbreviations of Names of Serials
Abbreviations of Names of Serials This list gives the form of references used in Mathematical Reviews (MR). ∗ not previously listed The abbreviation is followed by the complete title, the place of publication x journal indexed cover-to-cover and other pertinent information. y monographic series Update date: January 30, 2018 4OR 4OR. A Quarterly Journal of Operations Research. Springer, Berlin. ISSN xActa Math. Appl. Sin. Engl. Ser. Acta Mathematicae Applicatae Sinica. English 1619-4500. Series. Springer, Heidelberg. ISSN 0168-9673. y 30o Col´oq.Bras. Mat. 30o Col´oquioBrasileiro de Matem´atica. [30th Brazilian xActa Math. Hungar. Acta Mathematica Hungarica. Akad. Kiad´o,Budapest. Mathematics Colloquium] Inst. Nac. Mat. Pura Apl. (IMPA), Rio de Janeiro. ISSN 0236-5294. y Aastaraam. Eesti Mat. Selts Aastaraamat. Eesti Matemaatika Selts. [Annual. xActa Math. Sci. Ser. A Chin. Ed. Acta Mathematica Scientia. Series A. Shuxue Estonian Mathematical Society] Eesti Mat. Selts, Tartu. ISSN 1406-4316. Wuli Xuebao. Chinese Edition. Kexue Chubanshe (Science Press), Beijing. ISSN y Abel Symp. Abel Symposia. Springer, Heidelberg. ISSN 2193-2808. 1003-3998. y Abh. Akad. Wiss. G¨ottingenNeue Folge Abhandlungen der Akademie der xActa Math. Sci. Ser. B Engl. Ed. Acta Mathematica Scientia. Series B. English Wissenschaften zu G¨ottingen.Neue Folge. [Papers of the Academy of Sciences Edition. Sci. Press Beijing, Beijing. ISSN 0252-9602. in G¨ottingen.New Series] De Gruyter/Akademie Forschung, Berlin. ISSN 0930- xActa Math. Sin. (Engl. Ser.) Acta Mathematica Sinica (English Series). 4304. Springer, Berlin. ISSN 1439-8516. y Abh. Akad. Wiss. Hamburg Abhandlungen der Akademie der Wissenschaften xActa Math. Sinica (Chin. Ser.) Acta Mathematica Sinica. -
On the Arcsecant Hyperbolic Normal Distribution. Properties, Quantile Regression Modeling and Applications
S S symmetry Article On the Arcsecant Hyperbolic Normal Distribution. Properties, Quantile Regression Modeling and Applications Mustafa Ç. Korkmaz 1 , Christophe Chesneau 2,* and Zehra Sedef Korkmaz 3 1 Department of Measurement and Evaluation, Artvin Çoruh University, City Campus, Artvin 08000, Turkey; [email protected] 2 Laboratoire de Mathématiques Nicolas Oresme, University of Caen-Normandie, 14032 Caen, France 3 Department of Curriculum and Instruction Program, Artvin Çoruh University, City Campus, Artvin 08000, Turkey; [email protected] * Correspondence: [email protected] Abstract: This work proposes a new distribution defined on the unit interval. It is obtained by a novel transformation of a normal random variable involving the hyperbolic secant function and its inverse. The use of such a function in distribution theory has not received much attention in the literature, and may be of interest for theoretical and practical purposes. Basic statistical properties of the newly defined distribution are derived, including moments, skewness, kurtosis and order statistics. For the related model, the parametric estimation is examined through different methods. We assess the performance of the obtained estimates by two complementary simulation studies. Also, the quantile regression model based on the proposed distribution is introduced. Applications to three real datasets show that the proposed models are quite competitive in comparison to well-established models. Keywords: bounded distribution; unit hyperbolic normal distribution; hyperbolic secant function; normal distribution; point estimates; quantile regression; better life index; dyslexia; IQ; reading accu- racy modeling Citation: Korkmaz, M.Ç.; Chesneau, C.; Korkmaz, Z.S. On the Arcsecant Hyperbolic Normal Distribution. 1. Introduction Properties, Quantile Regression Over the past twenty years, many statisticians and researchers have focused on propos- Modeling and Applications. -
Curriculum Vitae
Curriculum Vitae PERSONAL INFORMATION Norbert Benda WORK EXPERIENCE February 2010- Present Head of Biostatistics and Special Pharmacokinetics Unit BfArM (Federal Institute for Drugs and Medical Devices) (Germany) Managing Biostatistics and Special Pharmacokinetics Unit, biostatistical assessment of European and national German drug applications, biostatistical support in scientific advices, biostatistical input to guidelines, biostatistical input to clinical and methodological research projects November 2006-January 2010 (Senior) Expert Statistical Methodologist Novartis Pharma AG (Switzerland) Development and application of novel statistical methodologies (dose-finding, adaptive designs, longitudinal data analysis, missing data, optimal design), methodological support for Trial and Program Statisticians, clinical scenario evaluations (simulations) for clinical trial planning, internal training courses in statistics July 1997-October 2006 Statistician Schering AG (Germany) Statistical design and analysis of clinical studies (phase I - IV), statistical consultant for preclinical and clinical development, project statistician for international drug development projects, member of the Global Pharmacometrics Team October 1993-July 1997 Research Assistant University of Tübingen, Department of Medical Biometry (Germany) Statistical consultant in statistics for medical PhD students and researchers, lectures in medical statistics, design and evaluation of medical studies, research projects in ophthalmology April 1989-September 1993 Research Assistant -
Joshua M. Tebbs
Joshua M. Tebbs Department of Statistics 215C LeConte College University of South Carolina Columbia, SC 29208 USA tel: +1 803 576-8765 fax: +1 803 777-4048 email: [email protected] www: http://people.stat.sc.edu/tebbs/ Date and Place of Birth: 1973; Fort Madison, Iowa, USA Degrees 2000 Ph.D., Statistics, North Carolina State University Advisor: William H. Swallow 1997 M.S., Statistics, University of Iowa 1995 B.S., Mathematics, Statistics; Honors: Statistics; Minor: Spanish, University of Iowa Professional Experience 2012- Professor, Department of Statistics, University of South Carolina 2010-2012 Graduate Director, Department of Statistics, University of South Carolina 2008-2011 Associate Professor, Department of Statistics, University of South Carolina 2006-2009 Undergraduate Director, Department of Statistics, University of South Carolina 2005-2008 Assistant Professor, Department of Statistics, University of South Carolina 2004-2005 Undergraduate Director, Department of Statistics, Kansas State University 2003-2005 Assistant Professor, Department of Statistics, Kansas State University 2001-2003 Assistant Professor, Department of Statistics, Oklahoma State University 2000-2001 Statistician, United Technologies 1997-2000 Teaching Assistant, Department of Statistics, North Carolina State University 1995-1997 Teaching Assistant, Department of Statistics, University of Iowa Current Research Interests Categorical data, statistical methods for pooled data (group testing), order-restricted inference, applications in epidemiology and public