Rohana Ambagaspitiya

Associate Professor

Department of Mathematics and Statistics

PhD - Mathematical Statistics

McMaster University

MSc - Statistics

McMaster University

BSc (Hons) first class honours - Mathematics

University of Kelaniya

Contact information

Phone

Phone: 403.220.7679

Web presence

Website

Location

Office : MS556

Courses

  • ACSC 527 - Life Contingencies III
  • ACSC 627 - Advanced Life Contingencies

Research and teaching

Research areas

  • Renewal risk processes

Publications

Journal article

  • Ambagaspitiya, Rohana. "Aggregate survival probability of a portfolio with dependent subportfolios". Insurance: Mathematics \& Economics 32.3 (2003): 431-443. Print.
  • Ambagaspitiya, Rohana. "On the distributions of two classes of correlated aggregate claims". Insurance: Mathematics \& Economics 24.3 (1999): 301-308. Print.
  • Ambagaspitiya, Rohana. "Compound bivariate {L}agrangian {P}oisson distributions". Insurance: Mathematics \& Economics 23.1 (1998): 21-31. Print.
  • Balakrishnan, N. and Ambagaspitiya, Rohana. "Classical classification procedure based on {$k$} dichotomous and one continuous variables". Parisankhyan Samikkha. An International Journal of Statistics 2.1 (1995): 1-11. Print.
  • Ambagaspitiya, Rohana. "A family of discrete distributions". Insurance: Mathematics \& Economics 16.2 (1995): 107-127. Print.
  • Balakrishnan, N. and Ambagaspitiya, Rohana. "A robust method of estimation based on the {MML} estimators for a simple linear regression model". Journal of Statistical Planning and Inference 30.2 (1992): 267-279. Print.
  • Tiku, M. L., Balakrishnan, N. and Ambagaspitiya, Rohana. "Error rates of a robust classification procedure based on dichotomous and continuous random variables". Communications in Statistics. Simulation and Computation 18.2 (1989): 571-588. Print.
  • Balakrishnan, N. and Ambagaspitiya, Rohana. "An empirical power comparison of three tests of exponentiality under mixture- and outlier-models". Biometrical Journal. Journal of Mathematical Methods in Biosciences 31.1 (1989): 49-66. Print.
  • Balakrishnan, N. and Ambagaspitiya, Rohana. "Relationships among moments of order statistics in samples from two related outlier models and some applications". Communications in Statistics. Theory and Methods 17.7 (1988): 2327-2341. Print.

Preprint

  • Ambagaspitiya, Rohana. "On the aggregate survival probability of a portfolio with dependent sub-portifolios.". , (September 2003). Print.