Glossary: ML Beyond the Basics
Population stability index (PSI)
Also written: PSI
A measure of how far one column's distribution has moved between old and new data. Below 0.1 is stable, 0.1 to 0.25 is worth a look, and above 0.25 is a real shift.
Glossary: ML Beyond the Basics
Also written: PSI
A measure of how far one column's distribution has moved between old and new data. Below 0.1 is stable, 0.1 to 0.25 is worth a look, and above 0.25 is a real shift.