Figure 3From: Improving official statistics in emerging markets using machine learning and mobile phone data Accuracy and AUC in EU (left) and SA (right) as a function of the minimum required level of activity. The model is trained and tested on a subset of users who are on average active x days per week, throughout the 3-months CDR period. As we increase this minimum required threshold, x, the coverage decreases and the performance slightly improves.Back to article page