UpComing Seminars Recent Seminars | Assoc. Prof. Simon Wilson
Bayesian Source Separation of Cosmic Microwave Background Prof Merrilyn Goos; Assoc Prof Sergiy Klymchuk; Prof Mike Thomas
Transition from School to University Education in Mathematics: New Zealand and Australia Perspectives Assoc. Prof. Ross Ihaka
"R Functions: Things Your Mother Didn't Tell You About" followed by the inaugural meeting of the Waikato R Users Group. Ben Stevenson
Predicting daily fishing success: The assessment of lunar and indigenous fishing calendars Dr Zazli Chik
The influence of outliers on comparing stationary stochastic signals using the randomisation test method. Dr Vladimir Obolonkin
Belarus and Chernobyl; Facts and Thoughts from a Statistician-Insider Dr Nicholas J. Horton
Much ado about nothing: a review of the state of the art of incomplete data Professor Rosemary Bailey
EXPERIMENTS IN RECTANGULAR AREAS: RESTRICTED RANDOMIZATION OF ROW-COLUMN DESIGNS Professor Ray Chambers
Maximum Likelihood under Informative Sampling Dr David Scott
The Hyperbolic and Related Distributions Dr Russell Millar
ASSESSMENT OF HIERARCHICAL MODELS FOR COUNT DATA Dr Rolf Turner
Direct Maximization of the Likelihood of a Hidden Markov Model Dr Murray Jorgensen
Where have all the Young Men gone? Professor Bruce Weir
THE BIRTHDAY PROBLEM and DNA PROFILES Professor William J Reed
Normal-Laplace Distributions and their Applications Hadley Wickham
Interactive Graphics John Leathwick (NIWA) and Jane Elith (University of Melbourne)
Boosted Regression Trees - a major advance in statistical modelling tools Dr Yong Wang
Extending the Fisher scoring and Gauss-Newton methods for complex statistical optimisation problems Dr Thomas Yee
A Framework for Regression Dr Murray Jorgensen
The Development of Statistics in New Zealand Rohan Maheswaran
A New Approach to Robust Estimation Dr Murthy Mittinty
Nearest Neighbour Imputation Richard Penny
Statistics New Zealand and the Official Statistics System - Data Collection and Access Dr James Curran
A MCMC method for resolving two person DNA mixtures Dr Lyn Hunt
Using multiple choice questions as an assessment device for statistical thinking Associate Professor David Whitaker
The state of the art in the generation of efficient statistical designs Professor J A John
Design, GenStat and CycDesigN Peter Mullins
Using Excel for inspecting segments of a time series of reasonable length Dr Beatrix Jones
Fitting and interpreting sparse Gaussian graphical models for high dimensional data Professor Chris Triggs
Establishing Identity Dr Michael Stuart
Mathematical thinking versus statistical thinking; redressing the balance in statistical teaching Dr Claire Jordan
CART, PPM's and PBRF Professor George Styan
Issai Schur (1875-1941) and the early development of the Schur complement, S–RP-1Q: photographs, documents and biographical remarks. Dr Daniel C. I. Walsh
The Importance Sampling Hough Transform Jan Bulla
Introduction to Hidden Markov Models Angelika van der Linde
General measures of variability and dependence for multivariate continuous distributions. Professor Rosemary Bailey
Hasse diagrams to describe the structure of designed experiments Professor Jacques Poot
On the use of meta-analysis in economics Professor J A John
Inverse of the Information Matrix Dr David Johnson
Teaching Statistics with Microsoft Excel Professor Peter Davis
Social facts and social stats: applications in quantitative sociology Dr James Curran
Some issues surrounding the interpretation of Low Copy Number (LCN) DNA evidence. Dr Murray Jorgensen
Estimating a density of microbial densities Harold V. Henderson
Dynamic Graphics in Statistical Consulting Professor David M Ryan
Robustness Issues in Aircrew Tours of Duty Optimisation Dr Ray Hoare
Why do we need ANOTHER statistics program? Dr Colin Aitken
Evaluation of Trace Evidence in the form
of Multivariate Data
Dr Michael Bulmer
Virtual Worlds for Teaching Mathematics and Statistics Graham McBride
Some Issues in Quantitative Health Risk Assessments for Waterborne Diseases Professor Chris Wild
Regression Problems with Missing Data Megan Jowsey (Project Coordinator) and Rachel Cunliffe (Web site/Publicity Developer)
CensusAtSchool NZ: a statistical experience for children Nicholas T Longford
Stability of household income in European countries Dr Neil Cox
What role does Excel have in the practice and teaching of statistics? Dr Lyn Hunt
Unsupervised Learning from Incomplete Three-way Data using a Mixture Model Approach Dr James Curran
Two Problems in Forensic Science Ian Westbrooke
Meeting statistical needs in a conservation management organisation Emlyn Williams
Statistical consulting and research in CSIRO Forestry and Forest Products Carole Wright
Row-column Designs and their Contractions Dave Saville
Multiple comparison procedures: consistency and family-size robustness Associate Professor David Whitaker
Optimal Stratified Sampling Designs Hans Hockey
Drug Development and Statistics Robert G. Easterling*
Statistical Foundations for the Validation of Computer Models Professor Keith J Worsley
Heritability random fields Dr Niall Broekhuizen
Verification of an Individual-Based Model of the foraging of Southern Buller's Albatross by comparison with ship-board observations Bryan Manly
The Assessment of Forestry on Northern Spotted Owls Dr Robert G. Newcombe
Confidence Intervals for Proportions and Related Quantities Dr Martin Upsdell
From Analysis of Means and Analysis of Coefficients to Analysis of Curves Dr Mik Black
Statistical Issues in the Design and Analysis of Spotted Microarray Experiments Dr Marti J. Anderson
Canonical analysis of principal coordinates: flexible constrained ordination Dr Jennifer Brown
Designing an efficient adaptive cluster sample Dr Judi McWhirter
Catching the Bayesian Wave: An MCMC Approach to Modelling Pulsatile Data Jock MacKay
Some Issues in Variation Reduction Dr M A Jorgensen
Using finite mixtures to robustify statistical models Associate Professor Stefan Steiner
Seven Habits of Highly Effective Industrial Problem Solvers: An Overview of Statistical Engineering (Shanin Methods) Professor J A John
Crossover Designs in Clinical Trials Associate Professor David Whitaker
Integer Programming: Constraint formulation with binary variables Dr Anthony Lehmann
GRASP: Generalized Regression Analysis and Spatial Prediction in Ecology Professor Alastair Scott
Estimating Interviewer and Observer Effects for Binary Responses Professor Les Foulds
Bookmobile Routing and Scheduling in Buskerud County, Norway Associate Professor Andy Philpott
Optimisation in Electricity Pool Markets |
Recent Seminars |
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Department of Statistics, University of Waikato 2002-08-15 GB.19 (G block basement, Room 19) In studies of the robustness of statistical estimators it has been common to use mixtures of distributions. Commonly a mixture of two distributions is used with one component modelling the good data and the other some contamination, although this could be extended to several different types of bad data.
It does not appear to be very common to have used the maximum likelihood estimator of the parameter vector of a particular mixture component as a robust estimator for a statistical model.
In this talk we explore this approach in the contexts of location/scale estimation and regression. We find that our proposed estimators have good influence properties and can sometimes work well even when there is more bad data than good.
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© 2007 FCMS. The University of Waikato - Te Whare Wananga o Waikato
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