# Data Mining Algorithms In R/Packages/RWeka/Predict Weka Classifier

< Data Mining Algorithms In R | Packages | RWeka## DescriptionEdit

Predicted values based on fitted Weka classifier models.

## UsageEdit

*predict(object, newdata = NULL, type = c("class", "probability"), ...)*

## ArgumentsEdit

*object*, an object of class inheriting from Weka_classifier. *newdata*, an optional data frame in which to look for variables with which to predict. If omitted or NULL, the training instances are used. *type*, character string determining whether classes should be predicted (numeric for regression, factor for classification) or class probabilities (only available for classification). Further arguments passed to or from other methods.

## ValueEdit

Either a vector with classes or a matrix with the posterior class probabilities, with rows corresponding to instances and columns to classes.