| Class | Description | 
|---|---|
| PreconstructedMissingValuesReplacer | 
 Preconstructed filter for replacing missing values with mean/mode 
 | 
| PreConstructedPCA | 
 Performs a principal components analysis and
 transformation of the data. 
Dimensionality reduction is accomplished by choosing enough eigenvectors to account for some percentage of the variance in the original data -- default 0.95 (95%). Based on code of the attribute selection scheme 'PrincipalComponents' by Mark Hall and Gabi Schmidberger.  |