Is there a way to inform classifiers in R of the relative costs of misclassification? : <p>This is a general question.  Are there classifiers in R -- functions that perform classification implementing classification algorithms-- that accept as input argument the relative cost of misclassification. E.g. if a misclassification of a positive to negative has cost 1 the opposite has cost 3.</p>

<p>If yes which are these functions?</p>
