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Momento/memento-note/lib/ai/semantic-proximity.ts
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feat(insights): fix DBSCAN, Persian embeddings crash, D3 physics layouts, and D3 node not found runtime error
2026-05-24 18:57:33 +00:00

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/** Seuil Memory Echo (prod) — connexions sous ce score ne sont pas proposées. */
export const SEMANTIC_SIMILARITY_FLOOR = 0.75
export const SEMANTIC_SIMILARITY_FLOOR_DEMO = 0.5
/** Seuil assoupli pour notes clippées / RTL (persan, arabe) — bruit HTML réduit la similarité. */
export const SEMANTIC_SIMILARITY_FLOOR_CLIP = 0.58
/** Ratio 0 (seuil) → 1 (identique), pour étaler laffichage au-dessus du seuil. */
export function semanticProximityRatio(
similarity: number,
floor = SEMANTIC_SIMILARITY_FLOOR,
): number {
const clamped = Math.max(floor, Math.min(1, similarity))
if (floor >= 1) return 1
return (clamped - floor) / (1 - floor)
}
/** Pourcentage « proximité » affiché (0100), étalé entre le seuil et 100 %. */
export function semanticProximityPercent(
similarity: number,
floor = SEMANTIC_SIMILARITY_FLOOR,
): number {
return Math.round(semanticProximityRatio(similarity, floor) * 100)
}
/** Rayon orbite : plus la proximité est forte, plus le nœud est proche du centre. */
export function semanticOrbitRadius(
similarity: number,
floor = SEMANTIC_SIMILARITY_FLOOR,
): number {
const MIN_R = 34
const MAX_R = 94
const t = semanticProximityRatio(similarity, floor)
return MAX_R - t * (MAX_R - MIN_R)
}