Prof. Célestin C. KOKONENDJI

Full Professor in Applied Mathematics (Statistics & Probability) since 2009; "National : Membre du Conseil National des Universités (CNU 26) élu A [2015–2019] et élu B [2004–2007] pour Transparence et Equité ; LmB : Responsable Equipe Probabilités et Statistique [2009–2014], Correspondant Communication [2009–2018], Membre du Conseil [2012–2015] ; UFR ST - Département maths : Responsable Master Modélisation Statistique (M2S) [2011–2014], Responsable Pédagogique 2e Année M2S [2011–2013] ; IUT des Pays de l’Adour - STID de Pau : Chef de Département (élu) [1998–2001], Directeur des études 2e Année [1997–1998], Responsable Communication [2000–2001], Administrateur (élu) [2001–2002] ; etc."

Also, Associate Professor at the Universty of Bangui (CAR) since 2022; “Laboratoire de mathématiques et connexes de Bangui (LmcB), Faculté des Sciences, Département de Mathématiques & Informatique LmcB/LIS, B.P. 908, Avenue des Martyrs, Bangui.”
See here for the Next/Last Meeting.

Interests
  • Associated-Kernel Method; Nonparametric Statistics
  • Dispersion Models & Indexes
  • Mathematical Statistics
  • Nonnegative Orthant Models; Bayesian Analysis; Biostatistics
  • Probability; Time Series; etc.
Education

  • High Degree of Research (HDR), 2004

    Université de Pau et des Pays de l'Adour

  • PhD Thesis, 1993

    Université Toulouse III - Paul Sabatier

  • Licence, Master, 1986-1990

    Universités de Bangui & Toulouse III

Research, Editorial Positions [8], PhD Students [20], etc.

Research Interests:

  • Associated-Kernel Method, Nonparametric Statistics
    Discrete/Continuous/Mixte; Non-/Semi-Parametric Estimation
  • Bayesian Analysis, Dispersion Models
    Exponential/Geometric/Factorial/Discrete Dispersion Models
  • Mathematical Statistics, Generalized Variance Functions
    Monge-Ampère Equations; Distribution Theory; Characterizations
  • Nonnegative Orthant Models, Environmental Statistics
    Count & Semi-Continuous Models; Variability Indexes; Biostatistics
  • Probability, Time Series Analysis
    pseudo-Orthogonal Polynomials; Stochastic/Lévy Processes; etc.

Editorial Positions [8]:

  • Journal of Statistical Planning and Inference
    Associate Editor from January 2009 to January 2012
  • Communications in Statistics – Theory & Methods
    Associate Editor since January 2013
  • Communications in Statistics – Simulation & Computation
    Associate Editor since January 2013
  • Communications in Statistics – Case Studies, Data Analysis & Applications
    Associate Editor since July 2015
  • International Journal of Statstiska and Mathematika
    Associate Editor since July 2012
  • International Journal of Evolution Equations
    Associate Editor since February 2011
  • The African Diaspora Journal of Mathematics
    Associate Editor since July 2006
  • Stats – Special Issue “Directions in Statistical Modelling”
    Guest Editor from 2020 to December 2021

PhD Students [20]:

  • Ayouba GUEDLAï – since Nov. 2023
    University of Bangui, CAR (with Pr. D.A. Njamen Njomen)
  • Moussa Abamaïna ABOUBAKAR – since Nov. 2023
    University of Bangui, CAR (with Pr. D.A. Njamen Njomen)
  • Bernard BALDAGAï – since Nov. 2023
    University of Bangui, CAR (with Pr. D.A. Njamen Njomen)
  • Romuald D. BOY-NGBOGBéLé – since Sept. 2023
    Pan African University (PAUSTI) & JKUAT, Kenya (with Pr. S. Mwalili & Dr. O. Ngesa)
  • Farouk MSELMI, HDR – from 2022 to 2023.04.03
    Université de Franche-Comté, France; Assistant Professor at the Euro-Mediterranean University of Fez, Morocco
  • Aboubacar Y. TOURé – from Oct. 2018 to 2021.11.18 postponed to 2021.12.07
    Université de Franche-Comté, France; Assistant Professor at the “Université des Sciences Sociales et de Gestion de Bamako”, Mali
  • Rahma ABID – from Oct. 2016 to 2019.04.17
    University of Sfax, Tunisia (with Pr. Afif Masmoudi); Assistant Professor at the “Institut Supérieur d’Informatique et de Multimédia de Sfax”, Tunisia
  • Khoirin NISA – from Sept. 2012 to 2016.12.16
    Université de Franche-Comté, France & Bogor Agricultural University, Indonesia (with Pr. Saefunddin); Assistant Professor at the Lampung University, Indonesia
  • Johann CUENIN – from Oct. 2013 to 2016.12.06
    Université de Franche-Comté, France; “Enseignant de Mathématiques à l’École d’ingénieurs des sciences aérospatiales – ELISA Aerospace de Saint-Quentin”, France
  • Nawal BELAID – from Sept. 2014 to 2016.11.17
    University of Bejaïa, Algeria (with Pr. Smaïl Adjabi); “ATER Université Paris 5 Descartes – IUT STID Paris”, France
  • Wanbitching E. WANSOUWé – de from Sept. 2013 to 2016.11.04
    University of Yaoundé I, Cameroon (with Pr. D.T. Kolyang); Senior Lecturer at the University of Maroua & ENS – Maroua, Cameroon
  • Said BEDDEK – from 2013 to 2018
    University of Bejaïa, Algeria (with Pr. Smaïl Adjabi); Assistant at the University of Bouira, Algeria
  • Anissa ELFAKIR – from 2013 to 2015
    Université de franche-Comté, France (with Sébastien Marque, PhD - Danone); “Ingénieure Biostatisticienne chez Sanofi”, France
  • Cyrille C. MOYPEMNA SEMBONA – from Oct. 2012 to 2016.06.17
    Université de Franche-Comté, France; Assistant Professor at the University of Bangui - Head of Department Maths & Info., CAR
  • Sobom M. SOMé – from Nov. 2012 to 2015.11.16
    Université de Franche-Comté, France; Assistant Professor at the University Thomas Sankara of Ouagadougou, Burkina Faso
  • Francial G.B. LIBENGUé DOBéLé-KPOKA – from Sept. 2010 to 2013.06.13
    Université de Franche-Comté, France & University of Ouagadougou, Burkina Faso (with Pr. Blaise Somé); Assistant Professor at the University of Bangui ; “DAAC Rectorat Bangui” ; “Directeur Général ISSEA Yaoundé” & “Commissaire au CEMAC”, CAR
  • Nabil ZOUGAB – from Nov. 2009 to 2013.02.17
    University of Bejaïa, Algeria (with Pr. Smaïl Adjabi); Professor-HDR at the University of Bejaïa, Algeria
  • Tristan SENGA KIESSé – from Oct. 2005 to 2008.10.15
    Université de Pau et des Pays de l’Adour, France; Researcher-HDR at the “Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Centre Bretagne-Normandie, UMR SAS, Rennes”, France
  • Dominique MIZèRE – from 2002 to 2006.01.27
    Université de Pau et des Pays de l’Adour, France (with S. Dossou-Gbété, PhD); Professor at the University Marien Ngouabi of Brazzaville, Congo
  • Mouna MASMOUDI – from 2001 to 2004
    Université de Pau et des Pays de l’Adour, France & University of Sfax, Tunisia (with Pr. A. Hassairi); “Professeure de mathématiques au Lycée de Sfax”, Tunisia

Maths & Coffee: More Recent Talks - Some Visitors - Main Visits

ORCID iD CCK: 0000-0001-8949-9634

Useful Links: Journal Rankings for ARC (Statistics); SCImago J. Rank (SJR) Statist. Probab.; Probab. Statist. Journals; Resources: MathWorld - St@tNet - BibM@th - MathSciNet - zbMATH - Mathematics Genealogy Project (My Grandfather) - Google Scholar - ResearchGate - Images.Math.CNRS - arXiv (Statistics) - HAL (LmB); Math Jokes; Qwant; Pr.JBHU; Write Mathematics; Mathematics Subject Classification: MSC 2020; JEL Classification.

Publications [113] & Preprints [12]

102a. Kokonendji CC, De Medeiros RMR, Bourguignon M (2024). Mean and variance for count regression models based on reparameterized distributions. Sankhya B 86(1), 280–310.

Cite DOI URL

101a. Somé SM, Kokonendji CC, Mamode Khan NA, Adjabi S, Beddek S (2024). Multiple combined gamma kernel estimations for nonnegative data with Bayesian adaptive bandwidths. Computational Statistics 39(2), 905–937. [The first two authors dedicate this paper to Professor Blaise Somé for his 70th birthday].

Cite DOI URL

098a. Esstafa Y, Kokonendji CC, Somé SM (2023). Asymptotic properties of the normalised discrete associated-kernel estimator for probability mass function. Journal of Nonparametric Statistics 35(2), 355–372.

Cite DOI URL

099a. Somé SM, Kokonendji CC, Belaid N, Adjabi S, Abid R (2023). Bayesian local bandwidths in a flexible semiparametric kernel estimation for multivariate count data with diagnostics. Statistical Methods & Applications 32(3), 843–865. [This article is dedicated to, and in memory of, Professor Longin Somé (1955–2022)].

Cite DOI URL

096a. Abid R, Kokonendji CC (2023). Choice between and within the classes of Poisson-Tweedie and Poisson-exponential-Tweedie count models. Communications in Statistics - Simulation and Computation 52(5), 2115–2129.

Cite DOI URL

See all publications

Teaching, Service to the Profession, etc.

Teaching Topics since 2009: Mathematical Methodology (L1); Analysis (L1); Mathematical Tools 1 & 2 (L1); Polynomials and Linear Algebra (L2); Elementary Probability (L2); Analytical Geometry (L2); Reduction of Endomorphisms (L2); Applied Analysis (L2); Linear Models (M1); Operation Research (M1); Panorama of Research in Mathematics (M1); Statistical Quality Control (M1, M2); Reliability (M2); Nonparametric Estimations and Associated-Kernel Method (M2); Bayesian Analysis and Applications (M2); Introduction to the Financial Modelling and Methodology in Research/Project (M2).

Organizer of International Conferences, e.g., for: The 3rd LmB Conference on Multivariate Statistical Models: Count and Semi-Continuous— Besançon (France): 06-08 July 2022, supported by ProFeMath; Session Invitée “S5: Séries temporelles à valeurs entières” aux Journées MAS 2018 de la SMAI, 29 - 31 Août 2018, Dijon; The LmB Conferences on “Multivariate Count Analysis” 04- 06 July 2018, Besançon; Invited Paper Session on “Uni->Multivariate Count Dispersion and Applications” to the 61st World Statistics Congress (ISI 2017), 16 - 21 July 2017, Marrakech; Invited Session on “New Advances in Underdispersed Count Data Analysis” to the XXVIII International Biometric Conference (IBC 2016), 10 - 15 July 2016, Victoria, British Columbia; Mini-course on “Integer-Valued Time Series” by C.H. Weiss & H. Joe - The LMB Trimester, 30 June 2014, Besançon; Workshop on “Count Data Modelling and Analysis” - The LMB Trimester, 01 - 04 July 2014, Besançon; etc.

Member of Scientific Program Commitees, e.g., for: The ISSAT International Conference on “Data Science in Business, Finance and Industry” (DSBFI 2019) Dong A University, 03-05 July 2019 & (DSBFI 2020) Dong A University, POSTPONED to 05-07 July 2021, Da Nang (Vietnam); The 2nd International Conference on Applied Sciences Mathematics and Informatics (ICASMI 2018 Advisor Board) University of Lampung 09 - 11 August 2018, Horison Hotel Bandar Lampung Indonesia; 61st ISI World Statistics Congress (ISI 2017) International Statistical Institute, 16 - 21 July 2017, Marrakech; International Conference on Engineering, Applied Sciences and System Modeling (ICEASSM’2017)) April 18 - 21, 2017 Accra; International Conference Applied Statistics for Development in Africa (SADA 2016), 28 Nov - 03 Dec 2016, Cotonou; 3rd International Conference on Bayesian Networks and Applications (ICBNA 2016), 14 - 16 October 2016, Sousse - Tunisia; etc.

Expert (National and International), e.g., for: HCERES (Laboratory evaluation); CIFRE (evaluation of industrial research projects); CNU 26 (evaluation of researchers); International evaluation of researchers; International evaluation of research projects; Examiner, President or/and Member of jury for PhD thesis and HDR for around sixty students; etc.

I have refereed books (e.g., for Chapman & Hall/CRC, Springer) and papers for a hundred different journals such that: Advances in Applied Mathematics, Bernoulli, Canadian Journal of Statistics, Communications in Statistics, Communications on Stochastic Analysis, Computational Statistics, Computational Statistics and Data Analysis, Econometrics, Environmetrics, ESAIM Probability & Statistics, Journal Afrika Statistika, Journal of Applied Statistics, Journal of Computational Biology, Journal of the Korean Statistical Society, Journal of Multivariate Analysis, Journal of the Royal Statistical Society, Journal of Statistical Planning and Inference, Journal of Time Series Analysis, Journal of Probability and Statistical Science, Lithuanian Mathematical Journal, Mathematics and Computers in Simulation, Mathematical Methods of Statistics, Metrika, Metron, Probability and Mathematical Statistics, SORT-Statistics and Operations Research Transactions, Statistics and Probability Letters, TEST, etc.

Previous Positions

Member of Scientific Societies

  • International Statistical Institute (ISI) since 1996 (elected member)
  • American Mathematical Society (AMS) from 1996 to 2002
  • Société Mathématique de France (SMF) from 1995 to 2002
  • Société Mathématique Appliquées et Industrie (SMAI) from 2000 to 2003
  • Société Française de Statistique (SFdS) from 2001 to 2015.

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