Dear All
I have been asked to forward these seminar details to the list. All welcome. Apologies to those too far way to attend. Please refer to links given and do not reply to me.
Thanks
Jeremy
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http://www.lse.ac.uk/collections/statistics/abstracts/seminarMar7.htm
School's site: http://www.lse.ac.uk/
Map: http://www.lse.ac.uk/School/maps/map3.htm
Friday 7th March
Time: 14.00 - 16.30
Venue: Vera Anstey Room, Old Building
Speaker: Professor Peter Hall, FRS (Australian National University)
Statistical Inference in High-Dimensional, Low Sample Size Settings
Abstract: Many contemporary discrimination problems in statistics involve the analysis of samples which are considerably smaller than the lengths of the vectors they contain. In such cases, conventional asymptotic arguments, where model complexity remains fixed as sample size, n, increases, are obviously unable to capture the character of discrimination methods. However, allowing dimension to increase, for fixed n, reflects several of the essential features of these problems, and provides insight into the relative performance of different discrimination rules. Indeed, such an analysis produces simple, low-dimensional geometric representations of the way in which discrimination rules work for very high-dimensional data. Using these ideas we discuss several discrimination methods, such as those based on the support vector machine, distance-weighted discrimination and nearest neighbour techniques.
Speaker: Sir David Cox, FRS (Nuffield College, University of Oxford)
Some Properties of Association and Dependence with Implications for the Interpretation of Observational Studies
Abstract: The talk will be in two loosely linked parts. The first deals with some issues in interpreting two by two contingency tables produced by mixing and the relation with the Yule-Simpson paradox. The second concerns the effect of unobserved confounders on associations and, in particular with an implication about the use of the propensity score of Rubin and Rosenbaum.
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