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OutlierScore

mnemo_core::anomaly::outlier

Struct OutlierScore 

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pub struct OutlierScore {
    pub z_score: f32,
    pub threshold: f32,
    pub is_outlier: bool,
    pub dims_flagged: u32,
    pub baseline_n: u64,
}
Expand description

Result of scoring one record against a baseline.

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§z_score: f32

Normalised Mahalanobis-proxy: sqrt(mean over dims of ((x - mu)^2 / var)). Normalisation by dimension count keeps the score comparable across embedding sizes.

§threshold: f32

Threshold the caller supplied; is_outlier = z_score >= threshold.

§is_outlier: bool

Convenience flag.

§dims_flagged: u32

Count of dimensions whose individual squared z-score exceeded 9.0 (i.e. >=3 standard deviations). A high count on long vectors is a useful tie-breaker: a single rogue dimension can lift the mean Mahalanobis without representing a real distribution shift.

§baseline_n: u64

Baseline sample count — surfaced so callers can reason about reliability (below MIN_BASELINE_SAMPLES the score is still computed but is_outlier is pinned to false).

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impl OutlierScore

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pub fn no_baseline(threshold: f32) -> Self

Trait Implementations§

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impl Clone for OutlierScore

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fn clone(&self) -> OutlierScore

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for OutlierScore

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for OutlierScore

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Serialize for OutlierScore

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more

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