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Research @ Census

Researcher Profiles

Just Launched and Growing: "Our Researchers"

  • "Our Researchers", a new Research @ Census feature, is a work in process
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  • We will continue to add both research profiles and publications

Our researchers produce innovations that keep our economic and social statistics efficient and relevant. Census researchers engage in challenging and rewarding work in a wide variety of fields. Researchers present their findings in working papers, publications, and reports, and in contributions at professional meetings.

Emanuel Ben-David 
Research Mathematical Statistician 
Center for Statistical Research and Methodology 

Contact Information

  • 301-763-7275  
  • emanuel.ben.david@census.gov  

Fields of Interest

  • Graphical & Causal Methods  
  • Statistical Learning  
  • Bayesian Statistics  
  • Optimization Theory  


  • Ph.D., Statistics, Indiana University, 2008  
  • M.S., Mathematics, Indiana University, 2004  
  • B.Sc., Mathematics & Physics, The Sharif Institute of Technology, 2001  

Professional Experience

  • Research Mathematical Statistician, U.S. Census Bureau, 2015-Present  
  • Term Assistant Professor, Adjunct, Department of Statistics, Columbia University, 2012-Present  
  • Postdoctoral Research Associate, Department of Statistics, Stanford University, 2010-2012  
  • Postdoctoral Fellow, Statistical & Applied Mathematical Sciences Institute (SAMSI), 2008-2009  

Selected Publications

  • Ben-David, Emanuel. 2015. "Sharper Lower and Upper Bounds for the Gaussian Rank of a Graph." Journal of Multivariate Analysis, 139, 207-218.
  • Ben-David, Emanuel. 2014. "The Letac-Massam Conjecture and Existence of High Dimensional Bayes Estimators for Graphical Models." In press.
  • Ben-David, Emanuel and B. Rajaratnam. 2014. "The Gaussian DAG Models with Symmetries." Preprint.
  • Ben-David, Emanuel, B. Rajaratnam, Tianxi Li, and H. Massam. 2014. "Hyper Markov Laws for Directed Acyclic Graph Models." Biometrika.
  • Ben-David, Emanuel. 2013. "Maximal Invariant Statistics for Lorentz Wishart Models." Journal of Geometry and Physics.
  • Ben-David, Emanuel and B. Rajaratnam. 2012. "Positive Definite Completion Problems for Acyclic Digraphs." SIAM Journal on Matrix Analysis and Applications.
  • Ben-David, Emanuel. 2010. "Some Hypothesis Tests for Wishart Models." Contemporary Mathematics, American Mathematical Society (AMS).
  • Ben-David, Emanuel. 2010. "On the Existence of the Maximum Likelihood Estimator for Gaussian Graphical Models." Proceedings of the IMS New Researchers Conference, Baltimore, MD, USA.
  • Ben-David, Emanuel. 2008. "Maximal Invariants over Symmetric Cones." Ph.D. Thesis, Indiana University, ISBN: 978-0549-91998-8, ProQuest LLC.
  • Mahdavi-Hezavehi, M., D. Kiani, and Emanuel Ben-David. 2002. "The Core of Finitely Generated Subgroup in GLn(D) are Central." International Journal of Mathematics.
  • Mahdavi-Hezavehi, M., M. Mahmudi, and Emanuel Ben-David. 2000. "Finitely Generated Subnormal Sub-groups of GLn(D)." Journal of Algebra.

Approved on: July 12, 2016
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Source: U.S. Census Bureau | Research and Methodology Directorate | census.research@census.gov | Last Revised: Friday, 14-Nov-2014 10:46:54 EST