HW 023 # 均值編碼寫法可以解釋一下嗎, 看起來很繞?
2019/05/09 02:10 PM
機器學習新手論壇
陳秉涵
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均值編碼data
ml100-2
ml100-2-d23
# 均值編碼
data = pd.concat([df[:train_num], train_Y], axis=1)
for c in df.columns:
mean_df = data.groupby([c])['SalePrice'].mean().reset_index()
mean_df.columns = [c, f'{c}_mean']
data = pd.merge(data, mean_df, on=c, how='left')
data = data.drop([c] , axis=1)
data = data.drop(['SalePrice'] , axis=1)