Machine Learning, Feature Sele, F1 Score, Classification, Imbalanced Class.
mean(),how='left',on=['region','department']) data1=data1.rename(columns={'avg_training_score_x':'avg_training_score','avg_training_score_y':'mean_reg_dpt'}) data1['new_avg_trng_score’] =data1['avg_training_score']/data1['mean_reg_dpt'] Domain specific- one must first check problem context and try