+ If the values are smaller than expected (below one unit),
+ the underlying assumption break down and the classification is wrong.
+ Use the "unit" parameter to hint at what the input resolution is.
+
+ If the correct value of unit is not known beforehand,
+ the argument "sbps" (Significant Bits Per Sample) can be used
+ to set unit such that maximal sample value is this many ones in binary.
+ If neither "unit" nor "sbps" are given, "sbps" of 12 is used by default.
+