public static DataSetSpecification createIrisDataSetSpec() {
DataSetSpecification dss = new DataSetSpecification();
dss.defineNumericAttribute("sepal_length");
dss.defineNumericAttribute("sepal_width");
dss.defineNumericAttribute("petal_length");
dss.defineNumericAttribute("petal_width");
dss.defineStringAttribute("plant_category", new String[] { "setosa",
"versicolor", "virginica" });
return dss;
}
}