There are multiple uses of Population Stability Index (PSI). The idea is to check "How the current scoring is compared to the predicted probability from training data set". In simple words, Population Stability Index (PSI) compares the distribution of a scoring variable (predicted probability) in scoring data set to a training data set that was used to develop the model. ![]() ![]() This tutorial describes the meaning and use of Population Stability Index and Characteristic Analysis.
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