ratios is equal to 1. And random models are those models whose likelihood ratios are all equal to 1. When , the boundary between models that do better than chance and bad models is equal to the set of random models (see article on the roc curve for more details), but it is strictly larger as soon as . And if , we can calculate the volume occupied by bad models in the ROC space: they occupy 90% of this space, whereas it's only 50% when .

General algorithmic strategies

The

1.Previous
3.Next