Unverified50% confidenceDecision RuleExact time
The simplified interpretation standard for PSI is: PSI < 0.10 indicates almost no significant change, and PSI reaching 0.20 indicates significant drift.
1
Sources
50%
Confidence
Long-term
Relevance
10/13/2026
First Seen
Sources
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Related Claims
UnverifiedPSI < 0.1 表示分布稳定，0.1-0.25 表示需要关注，> 0.25 表示分布发生显著变化、模型可能需要重新训练73% similarUnverifiedPSI is calculated by binning continuous features (usually 10 intervals), counting the proportion of samples in each interval in the baseline dataset and the new dataset, and for each bin computing (actual proportion − expected proportion) × ln(actual proportion / expected proportion) and summing them.61% similarUnverifiedLID accuracy at switching points is typically 10–20 percentage points lower than LID accuracy at non-switching points.58% similarUnverifiedIC通常用Pearson相关系数计算，取值范围-1到1，日均IC稳定达到0.03-0.05即被认为具有统计意义，顶级因子也很少超过0.157% similar
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