特邀嘉宾---Assoc. Prof. Dhritikesh Chakrabarty


Department of Statistics, Handique Girls’ College, India


Biography: Dr. Dhritikesh Chakrabarty, currently Associate Professor of Statistics in Handique Girls’ College (since 09-12-1987), Research Guide in Gauhati University & in Assam Down Town University and Guest Faculty in National Institute of Pharmaceutical Education & Research, Guwahati; obtained B.Sc. (Honours in Statistics) degree from Darrang College of Gauhati University in 1981 securing 1st class (with1st position) & Jawaharlal Nehru Award; M.Sc. (in Statistics) degree in 1983 securing 1st class (1st position) with Academic Gold Medal & Prof. V. D. Thawani Academic Award; M.Sc. (in Mathematics) degree in 1987 securing 1st class; Ph.D. (in Statistics) degree in 1993 all from Gauhati University; and Post Doctoral Research Award from University Grants Commission in (2002─05). He obtained Sangeet Visharad (Vocal Music) degree in 2000 from Bhatkhande Sangeet Vidyapith securing 1st class; Sangeet Visharad (Tabla) degree from Pracheen Kala Kendra in 2010 securing 2nd class; Sangeet Pravakar (Tabla) degree from Prayag Sangeet Samiti in 2012 securing 1st class; and Sangeet Bhaskar (Tabla) degree from Pracheen Kala Kendra in 2014 securing 1st class. His research interests are in Population Mathematics, Statistical Modelling, Theoretical Probability & Random Numbers, Data Analysis etc. Dr. Chakrabarty has already published (i) ninety two research papers in journals, (ii) eight research papers in conference proceedings & (iii) two books. He has already presented sixty research papers in research conferences. He is an active life member of (1) Assam Science Society (2) Assam Statistical Review (3) Indian Statistical Association (4) Indian Society for Probability & Statistics (5) Forum for Interdisciplinary Mathematics (6) Electronics Scientists & Engineers Society and (7) International Association of Engineers. Moreover, he is a Member of the Editorial Boards of some journals.

Speech Title: Variable(s) Connected by Theoretical Model and Model for Respective Observed Data
Abstract: Observed data, on some variable(s) considered for certain study, collected from experiments or survey usually suffers from various errors. Error occurs due to cause/causes which is/are assignable (or intentional). Assignable cause/causes of error are controllable. Even if all the assignable causes of error are controlled or eliminated, the observed data still do not become free from error; they still suffer from some error which occurs due to some unknown and unintentional (chance) cause which is unavoidable, uncontrollable. If the variable(s) under study follow some rule/law that can be described by some theoretical model, the observed data on the variable(s) may not satisfy the same model due to the association of errors with the observed data on the variable(s). Consequently, findings obtained by analyzing the observations using this theoretical model also suffer from error. Recently, some studies have been made (i) on searching for the model to be satisfied by the observed data containing error corresponding to the theoretical model which connects the variables under study and (ii) on the analysis of the model to be satisfied by the observed data. The studies have been made in the case of some common but significant theoretical models. This paper describes an overview of the study that has been made so far.