Identification of Multivariate Outliers. A review and empirical...
Mark Werner
Outliers, or unusually extreme values, have traditionally been viewed as a nuisance to researchers. Classical statistical analysis can lead to completely opposite conclusions if outliers are present or absent. Such points can, however, alert the researcher to unexpected features hidden within in a data set, and lead down paths of surprising discovery. Outliers could even be the primary purpose of the investigation. Credit card fraud, electronic network intrusions, and unusual stock characteristics preceding a large move, for instance, can all be seen as outliers whose presence is important to establish as quickly as possible. Several methods have been proposed to identify outliers, but many of these are not computationally suitable for...
ISBN: 978-3-6391-4277-8
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Книга по требованию
Дата выхода: июль 2011