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fix: handle expected value less than zero (#7410)

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Srikanth Chekuri 2025-03-26 18:20:46 +05:30 committed by GitHub
parent 72207691a3
commit 8f095dfbc9
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3
ee/query-service/anomaly/seasonal.go
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@ -313,6 +313,9 @@ func (p *BaseSeasonalProvider) getScore(
series, prevSeries, weekSeries, weekPrevSeries, past2SeasonSeries, past3SeasonSeries *v3.Series, value float64, idx int,
) float64 {
expectedValue := p.getExpectedValue(series, prevSeries, weekSeries, weekPrevSeries, past2SeasonSeries, past3SeasonSeries, idx)
if expectedValue < 0 {
expectedValue = p.getMovingAvg(prevSeries, movingAvgWindowSize, idx)
}
return (value - expectedValue) / p.getStdDev(weekSeries)
}