outliers(arrayQualityMetrics)
outliers()所属R语言包：arrayQualityMetrics
Helper functions for outlier detection and reporting in arrayQualityMetrics
异常检测和在arrayQualityMetrics报告的辅助函数
译者：生物统计家园网 机器人LoveR
描述----------Description----------
For an overview of outlier detection, please see the corresponding section in the vignette Advanced topics: Customizing arrayQualityMetrics reports and programmatic processing of the output. These two functions are helper functions used by the different report generating functions, such as aqm.boxplot.
对于一个孤立点检测的概述，请参阅在暗角高级主题的相应部分：自arrayQualityMetrics报告和输出的纲领性处理。这两个函数是由不同的生成报告的功能，如aqm.boxplot使用的辅助功能。
用法----------Usage----------
outliers(exprs, method = c("KS", "sum", "upperquartile"))
boxplotOutliers(x, coef = 1.5)
参数----------Arguments----------
参数：exprs
A matrix whose columns correspond to arrays, rows to the array features.
A矩阵的列对应阵列，行阵列功能。
参数：method
A character string specifying the summary statistic to be used for each column of exprs. See Details.
一个字符串指定的汇总统计，可以使用每个exprs列。查看详细信息。
参数：x
A vector of real numbers.
一个实数向量。
参数：coef
A number is called an outlier if it is larger than the upper hinge plus coef times the interquartile range. Upper hinge and interquartile range are computed by fivenum.
一个被称为离群值，如果它是比上铰链加上coef倍四分位距大。由fivenum上的铰链和四分位距计算。
Details
详情----------Details----------
outliers: with argument method="KS", the function first computes for each column of exprs (i.e. for each array) the value of the ks.test test statistic between its distribution of intensities and the pooled distribution of intensities from all arrays. With "sum" and "upperquartile", it computes the sum or the 75 percent quantile. Subsequently, it calls boxplotOutliers on these values to identify the outlying arrays.
outliers：参数method="KS"，该函数首先计算每个exprs（即每个阵列）之间的强度分布和列ks.test测试统计的价值汇集所有阵列的强度分布。 "sum"和"upperquartile"，它计算的总和或75％分位数。随后，它会调用boxplotOutliers外围的阵列，以确定这些值。
boxplotOutliers uses a criterion similar to that used in boxplot.stats to detect outliers in a set of real numbers. The main difference is that in boxplotOutliers, only the outliers to the right (i.e. extraordinarily large values) are detected.
boxplotOutliers使用标准类似boxplot.stats用来检测在实数集的离群的。它们的主要区别是在boxplotOutliers，只离群的权利（即特大值）检测。
值----------Value----------
For outliers, an object of class outlierDetection. For boxplotOutliers, a list with two elements: thresh, the threshold against which x was compared, and outliers, an integer vector of indices.
对于outliers类outlierDetection对象。 boxplotOutliers，有两个元素的列表：thresh，阈值对x相比，outliers，指数的整数向量。
作者（S）----------Author(s)----------
Wolfgang Huber
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注：
注1：为了方便大家学习，本文档为生物统计家园网机器人LoveR翻译而成，仅供个人R语言学习参考使用，生物统计家园保留版权。
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发表于 2012-2-25 12:09:40
