William F. Christensen

Professor
Department of Statistics
Brigham Young University

Department of Statistics

Brigham Young University

230 TMCB

Provo,UT 84604

Tel:801-422-7057

Fax:801-422-0635

email: william “at” stat “dot” byu “dot” edu

Teaching

Education

Research Interests

  • Pollution source apportionment
  • Multivariate analysis
  • Spatial and environmental statistics
  • Resampling methods
  • Climate and paleoclimate
  • Applications of statistics in politics and law

Selected Publications

  • Heaton MJ, Reese CS, and Christensen WF. (2009) “Temporally correlated Dirichlet processes for pollution receptor models,” to appear in Technometrics.
  • Christensen WF, and Schauer JJ. (2008) “Quantifying and manipulating species influence in positive matrix factorization,” Chemometrics and Intelligent Laboratory Systems, 94, 140-148.
  • Christensen WF, and Schauer JJ. (2008) “Impact of species uncertainty perturbation on the solution stability of positive matrix factorization of atmospheric particulate matter data,” Environmental Science & Technology, 42, 6015-6021.
  • Lingwall JW, Christensen WF, and Reese CS (2008)  “Dirichlet based Bayesian multivariate receptor modeling,” Environmetrics, 19, 618-629.
  • Christensen WF, and Florence LW (2008)  “Predicting presidential and other multistage election outcomes using state-level pre-election polls,” The American Statistician, 62, 1-10.
  • Christensen WF, Dillner AM, Schauer JJ, and Reese CS (2007).  “Clustering composition vectors using uncertainty information,” Environmetrics, 18, 859-869.
  • Lingwall JW, and Christensen WF (2007).  “Pollution source apportionment using a priori information and Positive Matrix Factorization,” Chemometrics and Intelligent Laboratory Systems, 87, 281-294.
  • Christensen WF, Schauer JJ, and Lingwall JW (2006).  “Iterated confirmatory factor analysis for pollution source apportionment,” Environmetrics, 17, 663-681.
  • Christensen WF, and Yetkin FZ (2005).  “Spatio-temporal analysis of auditory cortex activation as detected with silent event related fMRI,” Statistics in Medicine, 24, 2539-2556.
  • Christensen WF (2004).  “Chemical mass balance analysis of air quality data when unknown pollution sources are present,” Atmospheric Environment, 38, 4305-4317.
  • Christensen WF, and Gunst RF (2004).  “Measurement error models in chemical mass balance analysis of air quality data,” Atmospheric Environment, 38, 733-744.
  • Christensen WF, and Amemiya Y (2003). “Modeling and prediction for multivariate spatial factor analysis,” Journal of Statistical Planning and Inference, 115, 543-564.
  • Christensen WF, and Amemiya Y (2002).  “Latent variable analysis of multivariate spatial data,” Journal of the American Statistical Association, 97, 302-317.
  • Christensen WF, and Sain SR (2002).  “Accounting for dependence in a flexible multivariate receptor model,” Technometrics, 44, 328-337.

Curriculum vitae (.pdf format)


Honors

  • Distinguished Achievement Award, ASA Section on Statistics and the Environment, 2009
  • John and Susan Wierman Lecturer in Air Quality Data Analysis, Department of Applied Mathematics and Statistics, Johns Hopkins University, 2008
  • Young Scholar Award, Brigham Young University, 2005-2008
  • Chair’s Outstanding Paper Award, 2002, 2004

 

Not-so-serious stuff

 

 


The contents of this Web page are the sole responsibility of William F. Christensen and do not necessarily represent the opinions or policies of Brigham Young University.  The administrator of this Web page is William F. Christensen, who may be contacted at william “at” stat “dot” byu “dot” edu.