Machine Learning, Data Science, Python, Classification.
train.groupby(‘Age’).Survived.mean() train[‘Age_mean_target’] = train[‘Age’].map(means) test[‘Age_mean_target’] = test[‘Age’].map(means) means = train.groupby(‘Pclass’).Survived.mean() train[‘PClass_mean_target’] = train[‘Pclass’].map(means) test[‘PClass_mean_target’] = test[‘Pclass’].map(means)