1 files changed, 22 insertions, 0 deletions
diff --git a/core/model.go b/core/model.go
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index 0000000..4afcdae
--- /dev/null
+++ b/core/model.go
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+// Vendored from scholscan/core/model.go (rev 7c1a5ef, 2026-08-28).
+// Owned here; no upstream sync.
+// Model envelope persists trained model to JSON. Contains Vectorizer for IDF values,
+// OrderedVocab for feature ordering, and Weights for logistic regression.
+// To score: recreate TFIDFVectorizer, transform, then PredictScore.
+package core
+
+import (
+	"time"
+)
+
+// ModelEnvelope - complete trained model for scoring articles
+type ModelEnvelope struct {
+	Algorithm    string             `json:"algorithm"`
+	Impl         string             `json:"impl"`
+	Version      string             `json:"version"`
+	CreatedAt    time.Time          `json:"created_at"`
+	Meta         map[string]any     `json:"meta"`
+	Vectorizer   map[string]float64 `json:"vectorizer"`
+	OrderedVocab []string           `json:"ordered_vocab"`
+	Weights      []float64          `json:"weights"`
+}