Richard Lockhart, Professor and Chair
Department of Statistics and Actuarial Science
Simon Fraser University
Phone: (778) 782 3264 | Messages: (778) 782 3803 | Fax: (778) 782 4368
Office: TLX 10549 | Email: lockhart (at) sfu (dot) ca
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Putnam solutions1985 1988
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Physics and Statistics at BIRSJuly 2010 Workshop
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Methodology in Goodness of Fit
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.
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.
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.