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perseus:user:activities:matrixprocessing:imputation:replacemissingfromgaussian

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Parameters

Width

Defines the width of the Gaussian distribution relative to the standard deviation of measured values (default: 0.3). A value of 0.5 would mean that the width of the distribution used for drawing random numbers is half of the standard deviation of the data.

Down shift

Specifies the amount by which the distribution used for the random numbers is shifted downwards (default: 1.8). This is in units of the standard deviation of the valid data.

Mode

Specifies whether the replacement of missing values should be applied to each expression column separately (default) or on the whole matrix at once (“Total matrix”).

Columns

Selected expression columns, where missing values should be replaced (default: all expression columns are selected).


Parameter window

Perseus pop-up window: Imputation -> Replace missing values from normal distribution

perseus/user/activities/matrixprocessing/imputation/replacemissingfromgaussian.1447935760.txt.gz · Last modified: 2015/11/23 14:44 (external edit)