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Marti J. Anderson answers a few questions about this month's
new hot paper in the field of Mathematics.
From
•>>January 2005
Field:
Mathematics
Article Title: Generalized discriminant analysis based on distances
Authors: Anderson,
MJ;Robinson, J
Journal: AUST N Z J STAT
Volume: 45
Page: 301-318
Year: SEP 2003
* Univ Auckland, Dept Stat, Tamaki Campus, Private Bag 92019, Auckland, New Zealand.
* Univ Auckland, Dept Stat, Auckland, New Zealand.
* Univ Sydney, Sch Math & Stat, Sydney, NSW 2006, Australia.
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Why
do you think your paper is highly cited?
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“This paper describes a new statistical method for the analysis of whole sets of variables simultaneously...”
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This paper describes a novel methodology that allows multivariate
data to be examined on the basis of any dissimilar measure of
choice. I suspect that it is being cited in a number of different
fields because its potential application is so broad. Virtually any
set of multivariate data which is "misbehaving"
statistically (such as species abundance data in ecology, for
example) may be better analyzed through the use of an appropriate
(non-Euclidean) distance function and randomization tests, using our
proposed technique.
Could
you summarize the significance of your paper in layman's terms?
This paper describes a new statistical method for the analysis of
whole sets of variables simultaneously (in response to some
experimental treatments, for example). The method is unique and
extremely useful because it can be applied even when traditional
approaches fail. This commonly happens when variables have lots of
zeros, are highly skewed, or when there are more variables than
there are observation units. All of these problems occur, for
example, in the analysis of species variables in whole ecosystems.
This method provides an intuitive way of viewing information in a
multivariate data cloud, and also allows rigorous tests of
hypotheses from experiments.
How
did you become involved in this research?
I am originally a marine biologist and ecologist by training, who
later became more and more involved in quantitative statistical
analyses. The focus of my research now is to develop methods of
statistical analysis that are appropriate for ecological and
environmental data. I teamed up with Professor John Robinson
(University of Sydney) initially, to get a more formal training in
statistics, and also to work on the development of these kinds of
methods (multivariate analysis and randomization tests). It just so
happens that the techniques we have developed, which I was
interested to apply to ecological data, are flexible enough to be
used in virtually any context where variables do not fit the mold
required by traditional statistical approaches.
Dr. Marti J. Anderson
Department of Statistics
Tamaki Campus
University of Auckland
Auckland, New Zealand
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ESI Special Topics,
January 2005
Citing URL - http://www.esi-topics.com/nhp/2005/january-05-MartiJAnderson.html
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