what's an example of cross validation? how many folds are in weka weka how many instances in a data set how to classify multilayer perceptron data why weka model is not classifying correctly what is nominal attribute weka how many instances in each instance which attribute tells the data class which is a nominal attribute how many instances can i test with data when do you cross validate a class using a data set how many instances of data can be checked in weka how many instances are in a model and how much of a data set is there how many instances does weka crossvalidate which data set has no test data how many instances are in weka how is a data set classified weka how to classify data how many instances do i have for cross validation in weka model weka cross validation results