Dharam Chopra

Dharam Chopra, Professor

Statistics, Combinatorial Mathematics; PhD, University of Nebraska, 1968

Contact

Awards

University Research Grants: 1998-2004

PhD Students

Mohammad Bsharat, "On the Existence of Balanced Arrays with Two Symbols", PhD thesis, 2002

Research

Professor Chopra's research interests are in the areas of Statistical Design of Experiments, Combinatorial Mathematics, and Graph Theory. A part of his publications include numerous papers on the construction of optimal fractional factorial designs, some of which have been shown to be optimal in the class of all fractional factorial designs. He has published extensively on some combinatorial arrays such as Balanced Arrays and Orthogonal Arrays. He has also made contributions to the area of Graph Theory, in particular dealing with edge-balanced graphs.

Selected Publications

  • D.V.Chopra, Trace-optimal balanced reduced designs of resolution V for 9 factors, each at two levels, with 46 to 54 runs Journal of the Indian Statistical Association, 15, 1977, 179-186.
  • D.V.Chopra, A note on an upper bound for the constraints of balanced arrays of strength t Commun. Statist., 12,1983, 1755-1760.
  • D.V.Chopra, Contributions to the existence of some combinatorial arrays, Congressus Numerantium, 93, 1993, 183-186.
  • D.V.Chopra, Contributions to balanced arrays of strength five, The Journal of Combinatorial Mathematics and Combinatorial Computing, 27, 1998, 123-128.
  • D.V.Chopra and R.Dios', Contributions to the existence of balanced arrays of strength six, Journal of Combinatorics, Information and System Sciences 23, 1998, 345-350.
  • R.Dios' and D.V.Chopra, On the non-existence of some orthogonal arrays, The Journal of Combinatorial Mathematics and Combinatorial Computing, 54, 2005, 129-136.