function GetFloatIndex(const Missing: string): double;
Maps a value of a discrete attribute to its indexed (float) representation
Returns: double
Remarks:
When using "small, medium, big", "big" is more far away from small than "medium".
Maps a value of a discrete attribute to its indexed (float) representation
Returns: double
When using "small, medium, big", "big" is more far away from small than "medium".