Richard Lockhart, Professor
Phone: (778) 782 3264 | Messages: (778) 782 3803 | Fax: (778) 782 4368
Office: Surrey 2910 | Email: lockhart (at) sfu (dot) ca
Statistics CanadaThe Daily
United States Census BureauData
Putnam solutions1985 1986 1987 1988 1989
The Statistical Society of CanadaHome
Physics and Statistics at BIRSJuly 2010 Workshop
My old home pageI used to have a simpler page
SFU sitesMy department
High Dimensional Inference
Lately I have had the privilege of working with Jon Taylor, Ryan Tibshirani, and Rob Tibshirani on inference for LASSO and LARS. They are experts; I am a joy-rider. Too many co-authors to put pictures at left. Instead: Stanford.
Methodology in Goodness of Fit
I do goodness of fit, developing testing methods and associated large sample theory largely with Michael Stephens, Federico O'Reilly, Alberto Contreras Cristan, and a number of former students. Ted Anderson is at left.
I have written a number of papers on directional data with Michael Stephens and Peter Guttorp. With Michael I wrote about goodness-of-fit for the von~Mises distribution and worked with a student on von~Mises mixtures. With Peter I worked on direction finding for downed aircraft. That paper does Bayesian analysis of the problem of finding and object on the basis of bearings taken with von~Mises distributed errors. It also considers ``outlier'' detection in a directional context. Michael's PhD supervisor, Geoff Watson, is pictured at left.
Large Sample Theory
I like to work on large sample theory with what I think of as clean, simple conditions. Peter Guttorp and I did this sort of thing in work on inference in irregularly sampled random walks. That work was motivated by a paper I wrote applying the local central limit theorem to prove that on an explosive trajectory of a Bienaymé-Galton-Watson only the mean, variance and perhaps one other arithmetic parameter admit consistent estimates. Then Peter and I worked on the large sample behaviour of quadratic forms in uniform order statistics. That grew out of work on Q-Q plots some of which I did with Graham McLaren. Recently I proved a conditional limit theorem for empirical distribution functionl tests. At left is Sir Francis Galton.
I have a paper with Peter Guttorp about finding downed aircraft, work with Chandanie Perera on thermoluminescence dating, early work with (or really for -- I was a summer student at the time having just finished my BSc) Jim Zidek on traffic loading on the Lion's Gate Bridge.