Outlier detection in psychiatric epidemiology
نویسندگان
چکیده
منابع مشابه
Outlier detection in psychiatric epidemiology.
Outliers may be of interest in their own right or they may merely be distractions from the point in question, and a hindrance to generalisation. In the medical field, including psychiatry, concise summary statistics and parsimonious models have tended to be the main aim of many studies. However, partly motivated by the requirements of medical audit and other political and financial consideratio...
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BACKGROUND Most microarray data processing methods negate extreme expression values or alter them so that they do not lie outside the mean level of variation of the system. While microarrays generate a substantial amount of false positive and spurious results, some of the extreme expression values may be valid and could represent true biological findings. METHODS We propose a simple method to...
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A procedure for detecting outliers in regression problems is proposed. It is based on information provided by boosting regression trees. The key idea is to select the most frequently resampled observation along the boosting iterations and reiterate after removing it. The selection criterion is based on Tchebychev’s inequality applied to the maximum over the boosting iterations of ...
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ژورنال
عنوان ژورنال: Epidemiologia e Psichiatria Sociale
سال: 1997
ISSN: 1121-189X,2038-1816
DOI: 10.1017/s1121189x0000498x