importance
From randomForest v4.0-7
by Andy Liaw
Extract variable importance measure
This is the extractor function for variable importance measures as
produced by randomForest.
- Keywords
- regression, classif, tree
Usage
## S3 method for class 'randomForest':
importance(x, type=2, class, ...)Arguments
- x
- an object of class
randomForest - type
- either 1 or 2, specifying the type of importance measure (1=mean decrease in accuracy, 2=mean decrease in node impurity).
- class
- for classification problem, which class-specific measure to return.
- ...
- not used.
Details
See the documentation for randomForest for explanation
of how the importance measures are computed.
Value
- A (named) vector of importance measure, one for each predictor variable.
See Also
Community examples
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