Weighted error rate

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Description

If different types of errors are associated with different costs a weighted error function might be more appropriate than the standard.

Usage

1

Arguments

x

Cost matrix or factor response vector.

Details

This function is not in itself an error function, but used to generate error functions. Either supply a predefined cost matrix or a response vector for a classification problem to define it automatically.

The automatically generated cost matrix will generate an error of 0 if all predictions are correct, 1 if all predictions are incorrect and 0.5 if all predictions are the same (regardless of class, i.e. if one class is smaller it will be given a higher misclassification cost).

Value

An error function.

Author(s)

Christofer B├Ącklin

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