Read the equation
This relation defines coefficients but writes nothing. minEvents <= 0 auto computes the floor as twenty decided in the source section “coefficients but writes nothing. minEvents <= 0 auto”. It specifies the displayed relationship between the named quantities or parameters. Its interpretation depends on the source’s stated variables and conditions; this record does not assign an unprovided physical or cognitive meaning to them.
Terms & definitions
The recovered passage does not supply a separate symbol table. Read the source context for the notation used in this version; familiar letters may carry different meanings in other builds.
How it works
Read coefficients but writes nothing. minEvents <= 0 auto computes the floor as twenty decided as the quantity being defined or updated by this relation.
Substitute the source-defined variables or recorded values and follow the displayed arithmetic and indexing exactly.
Use this version’s variable definitions and update order. The same symbol may be assigned a different meaning in another build.
Assumptions & limits
This source expression was recovered from the pinned code revision. Its presence does not establish that the associated program was built, run, or scientifically validated.
Original context
Read the surrounding source passage
}
// Train reads the pooled decided bid labels, fits an interpretable win probability logistic model, and writes a
// new CHALLENGER version (never a champion). It refuses to fit (Skipped) below the events per predictor floor or
// on a single class, leaving the prior only champion in force. It converts the solver's standardized
// coefficients into raw feature space (so the serve path applies them directly to gathered raw feature values)
// and materializes a Platt calibration map into monotone bins. When dryRun is set it fits and returns the
// coefficients but writes nothing. minEvents <= 0 auto computes the floor as twenty decided events per fitted
// parameter (the intercept plus one per feature).
func Train(ctx context.Context, pool *pgxpool.Pool, modelKey string, l2 float64, minEvents int, dryRun bool) (TrainResult, error) {
rows, err := ReadLabeledBids(ctx, pool)
if err != nil {
return TrainResult{}, err
}
x, y, featureNames := learn.BuildDataset(rows)
var res TrainResult
res.FeatureNames = featureNames
for _, v := range y {Exact original notation
coefficients but writes nothing. minEvents <= 0 auto computes the floor as twenty decided events per fitted