Description Usage Arguments Details Value References Examples
Generates synthetic minority examples for a dataset trying to preserve the variance and mean of the minority class. Works on every type of dataset.
1  rwo(dataset, numInstances, classAttr = "Class")

dataset 

numInstances 
Integer. Number of new minority examples to generate. 
classAttr 

Generates numInstances
new minority examples for dataset
,
adding to the each numeric column of the jth example its variance scalated
by the inverse of the number of minority examples and a factor following a
N(0,1) distribution which depends on the example. When the column is
nominal, it uses a roulette scheme.
A data.frame
with the same structure as dataset
,
containing the generated synthetic examples.
Zhang, Huaxiang; Li, Mingfang. RwoSampling: A Random Walk OverSampling Approach To Imbalanced Data Classification. Information Fusion 20 (2014), p. 99<e2><80><93>116.
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