GS_raw = wS×(Shares/Reach) + wC×(Comments/Reach) + wF×(Follows/Reach) + wK×(WebsiteTaps/Reach) + wSv×(Saves/Reach) + wL×(Likes/Reach) + wR×clip(Reach/AvgReach,0.5–1.5) + wImp×clip(Impressions/Reach,0.5–2.0) GS = GS_raw × Scale(預設 1000)
GP_post = round( (GS / Scale) × Accounts reached × g(Impressions/Reach) × g_aud ) 其中 g(Impr/Reach):頻次品質(1.0:1.0–1.5;0.9:0.8–1.0 或 1.5–2.0;0.8:其餘) g_aud:受眾加權,依 Non-followers % 調整(預設 ±10%)