Mohammad Jafari Jozani
Photo of Mohammad Jafari Jozani

Assistant Professor

Office: 325 Machray Hall

Telephone: 204-272-1563

Research Interests

Bayesian statistics, statistical decision theory, ranked set sampling

Recent Publications

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Research Programs

My research has primarily been in Bayesian statistics and statistical decision theory. I have been doing research in decision theoretic problems related to the theory and applications of balanced type loss functions as well as estimation in constrained parameter spaces. Recently I have developed an interest in research related to ranked set sampling (RSS) from finite and infinite populations. RSS is typically used when it is very expensive to collect data on the variables of interest (e.g., in fisheries, agriculture, environmental and ecological studies, economy) but a reasonable number of the sampling units can be ordered (partially) with respect to a variable of interest without actual measurement and at little cost. For example, in fisheries studies aging the fish is time consuming and requires substantial scientific process. But a sample of fish could be ranked easily based on their lengths. RSS designs provide a collection of techniques to obtain more representative samples in these situations with the help of the available auxiliary information. My current research in RSS involves drawing design-based and model-based inference including parametric and nonparametric studies based on RSS and some its modifications which I developed with my collaborators (e.g., randomized nomination sampling; RSS with antithetic variables).

News

  • I am currently accepting a good Master's student. If you are interested, please feel free to contact me.

Research grants and awards

  • Rh Award for outstanding contributions to scholarship and research in the natural sciences, University of Manitoba, 2012.
  • NSERC Research Tools and Instruments Grant [joint with Dr. Leblanc (PI) and 9 others], 2012.
  • University of Manitoba Merit Award for Research, 2011.
  • NSERC Discovery Grant: "Decision theoretic inference in problems involving balanced loss functions, constraint parameter spaces and finite mixture models", 2010-2015.
  • Start-up Grant, University of Manitoba, 2010-2012.

Supervision of highly qualified personnel

  • Elaheh Torkashvand, Ph.D., In Progress. (September 2011).
  • Mohammad Nourmohammadi, Ph.D., In Progress. (January 2010, co-advisor: Brad Johnson).
  • Armin Hatefi, Ph.D., In Progress. (September 2010, co-advisor: Alexandre Leblanc).
  • Nahid Jafari Tabrizi, Postdoctoral in Statistics, (Feb-Aug, 2012).
  • Saeid Amiri, Visiting Ph.D. Student from the Uppsala University, Sweden, 2010.
  • Sayed Jamal Mirkamali, M.Sc. thesis defended 2008, “Proportion estimation using ranked set sampling”, Allameh Tabatabaie University, Tehran, Iran.
  • Saeed Majidi, M.Sc. thesis defended 2008, “Ratio estimators using ranked set sampling”, Allameh Tabatabaie University, Tehran, Iran.
  • Negin Mahlooji, M.Sc. thesis defended 2006, “Sequential point estimation of the scale parameter”, Allameh Tabatabaie University, Tehran, Iran. (co-supervisor with Nader Nematolahi)

Presentations, Seminars and Conferences

2012

  • Jafari Jozani, M. [speaker], Davies, K. and Balakrishnan (2012). Some Pitman Closeness Properties Pertinent to Symmetric Populations. The University of Tehran, Tehran, IRAN, May 20, 2012.
  • Hatefi, A. [speaker] and Jafari Jozani, M. (2012). Fisher information in ranked set samples from finite mixture models. SSC annual meeting, University of Guelph, Guelph, Ontario, June 2012.
  • Nourmohammadi, M. [speaker], Jafari Jozani, M. and Johnson, B.C. (2012). Nonparametric Confidence Intervals of Quantiles of a Finite Population using Randomized Nomination Sampling. SSC annual meeting, University of Guelph, Guelph, Ontario, June 2012.

2011

  • Jafari Jozani, M. [speaker], Balakrishnan, N. and Davies, K.F. (2011). Some Pitman Closeness Properties Pertinent to Symmetric Populations,Statistics seminar, University of Manitoba, November, 2011.
  • Jafari Jozani, M. [speaker] and Mirkamali, S.J. (2011). Maxima Nomination Sampling with Application in Constructing Quality Control Charts for Attribute, SSC Annual Meeting, Wolfville, June 2011.
  • Jafari Jozani, M., and Johnson, B.C. [speaker] (2011). Randomized Minima-Maxima Nomination Sampling in Finite Populations, SSC Annual Meeting, Wolfville, June 2011.
  • Jafari Jozani, M., Leblanc, A. & Marchand, E. [speaker] (2011). On estimating a distribution function and the choice of the loss function. SSC Annual Meeting, Wolfville, June 2011.
  • Jafari Jozani, M. [speaker] and Johnson, B.C. (2011). Design Based Estimation for Ranked Set Sampling in Finite Populations. Statistics seminar, University of Manitoba, April, 2011.

Memberships

  1. Statistical Society of Canada (SSC)
  2. American Statistical Association (ASA)
  3. Institute of Mathematical Statistics (IMS)
  4. International Society for Bayesian Analysis (ISBA)
Upcoming Exam

STAT 1000 A03 Midterm 2
Thursday, June 6 at 7:00 p.m.