public static Dataset<? extends Instance> irisDataset() {
if (irisData == null) {
CommonFixture tf = new CommonFixture();
irisData = new SampleDataset();
ARFFHandler arff = new ARFFHandler();
try {
arff.load(tf.irisArff(), irisData, 4);
} catch (FileNotFoundException | ParserError ex) {
Exceptions.printStackTrace(ex);
} catch (IOException ex) {
Exceptions.printStackTrace(ex);
}
}
return irisData;
}
public static Dataset<? extends Instance> schoolData() {
if (school == null) {
CsvLoader loader = new CsvLoader();
school = new ArrayDataset(17, 4);
school.setName("school data");
loader.setClassIndex(4);
loader.setSeparator(' ');
try {
loader.load(fixture.schoolData(), school);
} catch (IOException ex) {
Exceptions.printStackTrace(ex);
}
}
return school;
}