| Acronym | Name | Description |
|---|---|---|
| I | Package Instability | range between 0=Maximally stability and 1=Maximally instability |
| A | Abstractness Degree | range between 0=Minimally abstractness and 1=Maximally abstractness |
| D | Normalized Distance | range between 0=exactly located in the main sequence and 1=far from the main sequence |