--- title: Day 8 CTR模型收斂優化 (Froggy) tags: '課程筆記' --- # Day 8 CTR模型收斂優化 (Froggy) 過去 CTR > 0.5 = 1 CTR < 0.5 = 0 問題：預測很差或廣告沒有走出去 解決：機率根據前一天調整 i.e. CPC > 5 機率家0.015