I'm trying read a CSV file with missing values and apply a model.
My problem is that any missing values in unlabelled data change his type and a error appear "The imput ExampleSet dpes not match the training ExampleSet..." I cant change the types manually beacause i have more than 4000 attributes.
I tryied use Nominal to Numerical and I lose all missing datas with the convesion.
How i force all attributes to be numerical when i import it? Thanks for your answers.