多中机器学习模型对比可视化

        传统的机器学习模型的选择往往是凭借经验和习惯，部分人一般情况会用TPOT今天最佳模型调参，但是也许要对比其他模型在哪些模型衡量指标下的优劣势，这里提供一个简单的效果对比工具：

import matplotlib.pyplot as plt

model_comparison = pd.DataFrame({'model': ['Linear Regression', 'Support Vector Machine',
                                           'Random Forest', 'Gradient Boosted',
                                            'K-Nearest Neighbors','ExtraTreesRegressor','LGBM'],
                                 'mae': [lr_mae, svm_mae, random_forest_mae, 
                                         gradient_boosted_mae, knn_mae,knn_mae,LGBM_mae]})


model_comparison.sort_values('mae', ascending = False).plot(x = 'model', y = 'mae', kind = 'barh',
                                                           color = 'red', edgecolor = 'black')

plt.ylabel('')
plt.yticks(size = 14)
plt.xlabel('Mean Absolute Error')
plt.xticks(size = 14)
plt.title('Model Comparison on Test MAE', size = 20)
plt.figure(figsize=(4,6))