/**
* Transforms given binned index (short) from class column into a value from interval [0..N-1]
* corresponding to a particular predictor class
*/
public int unmapClass(int clazz) {
Col c = _c[_c.length - 1];
if (c._isByte) return clazz;
else {
// OK, this is not fully correct bad handle corner-cases like for example dataset uses classes
// only
// with 0 and 3. Our API reports that there are 4 classes but in fact there are only 2
// classes.
if (clazz >= c._binned2raw.length) clazz = c._binned2raw.length - 1;
return (int) (c.raw(clazz) - c._min);
}
}
