Module zscore 

anomaly_score_zscore window function — Z-Score-based anomaly scoring.

Algorithm: score = |x - mean(window)| / stddev(window)

When stddev = 0 (constant window), returns 0.0 if value equals mean, or +inf otherwise.

Structs

AnomalyScoreZscore

AnomalyScoreZscoreEvaluator 🔒

Constants

MIN_SAMPLES 🔒

Minimum valid samples for zscore (stddev requires n >= 2).