Charts

Here's the code for the test set performance chart.

plt.figure(figsize=(12, 4))
df_results = pd.DataFrame(grid.cv_results_)
for score in ['mean_test_recall', 'mean_test_precision']:
    plt.plot([_[1] for _ in df_results['param_class_weight']],
            df_results[score],
            label=score)
plt.legend();

Here's the code for the train set performance chart.

plt.figure(figsize=(12, 4))
df_results = pd.DataFrame(grid.cv_results_)
for score in ['mean_train_recall', 'mean_train_precision']:
    plt.scatter(x=[_[1] for _ in df_results['param_class_weight']],
                y=df_results[score.replace('test', 'train')],
                label=score)
plt.legend();