Struct PredictorEval 

pub struct PredictorEval {
    pub n: usize,
    pub auc: Option<f64>,
    pub brier: f64,
}

Aggregate gate verdicts + routing behavior over traces (enforce only). Prequential evaluation of the per-query gate-pass predictor (ADR 0008 Phase 2) — the honest “is it any good yet” check before the predictor is ever allowed to act. Replays the receipts in order through a fresh predictor: for each attempt with a clear Pass/Fail verdict, predict before update (so every prediction is on data the model has not trained on), then update. Reports AUC (predicted -> passed) and Brier score over those pairs.

Fields

n: usize

Labeled attempts evaluated.

auc: Option<f64>

AUC of predicted P(pass) ranking actual passes above fails. 0.5 = no signal; 1.0 = perfect. None when one class is absent (all pass or all fail — AUC undefined).

brier: f64

Mean squared error of the probabilistic prediction, in [0, 1]. Lower is better; 0.25 is the always-0.5 baseline.

Trait Implementations

impl Debug for PredictorEval

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

Formats the value using the given formatter.

impl Serialize for PredictorEval

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

where __S: Serializer,

Serialize this value into the given Serde serializer.